Laird M Close

Interests

Research

Prof. Close is an expert in Adaptive Optics system design and development (a technique that makes ground based telescopes as powerful as space based telescopes) which allows his research group to image new exoplanets (using unique optical devices for increasing star to planet contrast). The ultimate goal is to find another habitable world.

Teaching

Developed the first Astrobiology course on DVD "Life in Our Universe" a 12 hour lecture course from the Great Courses Collection. http://www.thegreatcourses.com/courses/life-in-our-universe.htmlNow Prof. Close uses these lectures to "flip" his Astr202 classroom.

Courses

Scholarly Contributions

Journals/Publications

• Close, L. (2021). VizieR Online Data Catalog: Predicted planetary yields of gap transitional disks (Close, 2020). VizieR Online Data Catalog, J/AJ/160/221.
• Doelman, D., Snik, F., Por, E., Bos, S., Otten, G., Kenworthy, M., Haffert, S., Wilby, M., Bohn, A., Sutlieff, B., Miller, K., Ouellet, M., Boer, J., Keller, C., Escuti, M., Shi, S., Warriner, N., Hornburg, K., Birkby, J., , Males, J., et al. (2021). Vector-apodizing phase plate coronagraph: design, current performance, and future development [Invited]. \ao, 60(19), D52.
• Haffert, S. Y., Males, J. R., Close, L. M., Van, G. K., Long, J. D., Hedglen, A. D., Guyon, O., Schatz, L., Kautz, M., Lumbres, J., Rodack, A., Knight, J. M., Sun, H. e., & Fogarty, K. (2021). Data-driven subspace predictive control of adaptive optics for high-contrast imaging. Journal of Astronomical Telescopes, Instruments, and Systems, 7, 029001.
• Haffert, S. Y., Males, J. R., Close, L. M., Van, G. K., Long, J. D., Hedglen, A. D., Guyon, O., Schatz, L., Kautz, M., Lumbres, J., Rodack, A., Knight, J. M., Sun, H. e., & Fogarty, K. (2021). Data-driven subspace predictive control of adaptive optics for high-contrast imaging. arXiv e-prints, arXiv:2103.07566.
• Shan, Y., Yee, J. C., Bailey, V. P., Close, L. M., Hinz, P. M., Males, J. R., & Morzinski, K. M. (2021). OGLE-2007-BLG-224L: A Direct Test of Terrestrial Parallax. \apj, 908(2), 240.
• Sutlieff, B. J., Bohn, A. J., Birkby, J. L., Kenworthy, M. A., Morzinski, K. M., Doelman, D. S., Males, J. R., Snik, F., Close, L. M., Hinz, P. M., & Charbonneau, D. (2021). High-contrast observations of brown dwarf companion HR 2562 B with the vector Apodizing Phase Plate coronagraph. \mnras, 506(3), 3224-3238.
• Van, G. K., Males, J. R., Close, L. M., Lumbres, J., Hedglen, A., Long, J. D., Haffert, S. Y., Guyon, O., Kautz, M., Schatz, L., Miller, K., Rodack, A. T., Knight, J. M., & Morzinski, K. M. (2021). Characterizing deformable mirrors for the MagAO-X instrument. Journal of Astronomical Telescopes, Instruments, and Systems, 7, 039001.
• Xie, X., Dong, S., Shvartzvald, Y., Gould, A., Udalski, A., Beaulieu, J., Beichman, C., Close, L. M., B., H. C., R., M. J., Marquette, J., M., M. K., & R., G. C. (2021). Characterizing microlensing planetary system OGLE-2014-BLG-0676Lb with adaptive optics imaging. Research in Astronomy and Astrophysics, 21(12), 303.
• Xie, X., Dong, S., Zhu, W., Gould, A., Udalski, A., Beaulieu, J. -., Close, L., Males, J., Marquette, J. -., Morzinski, K., Pogge, R., & Yee, J. (2021). MagAO Observations of the Binary Microlens OGLE-2014-BLG-1050 Prefer the Higher-mass Solution. \aj, 161(3), 113.
• Zhou, Y., Bowler, B. P., Wagner, K. R., Schneider, G., Apai, D., Kraus, A. L., Close, L. M., Herczeg, G. J., & Fang, M. (2021). Hubble Space Telescope UV and H\ensuremath{\alpha} Measurements of the Accretion Excess Emission from the Young Giant Planet PDS 70 b. \aj, 161(5), 244.
• Close, L. M. (2020). The Separation and H\ensuremath{\alpha} Contrasts of Massive Accreting Planets in the Gaps of Transitional Disks: Predicted H\ensuremath{\alpha} Protoplanet Yields for Adaptive Optics Surveys. \aj, 160(5), 221.
• Close, L. M., Males, J. R., Hedglen, A., Bouchez, A., & Guyon, O. (2020). Concept for the GMT High-Contrast Exoplanet Instrument GMagAO-X and the GMT High-Contrast Phasing Testbed with MagAO-X. arXiv e-prints, arXiv:2004.06808.
• Poleski, R., Suzuki, D., Udalski, A., Xie, X., Yee, J., Koshimoto, N., Gaudi, B., Gould, A., Skowron, J., Szymanski, M., Soszynski, I., Pietrukowicz, P., Kozlowski, S., Wyrzykowski, L., Ulaczyk, K., Abe, F., Barry, R., Bennett, D., Bhattacharya, A., , Bond, I., et al. (2020). VizieR Online Data Catalog: LC of microlensing event OGLE-2012-BLG-0838 (Poleski+, 2020). VizieR Online Data Catalog, J/AJ/159/261.
• Poleski, R., Suzuki, D., Udalski, A., Xie, X., Yee, J., Koshimoto, N., Gaudi, B., Gould, A., Skowron, J., Szyma{\'nski}, M., Soszy{\'nski}, I., Pietrukowicz, P., Koz{\lowski}, S., Wyrzykowski, \., Ulaczyk, K., Collaboration, O., Abe, F., Barry, R. K., Bennett, D. P., , Bhattacharya, A., et al. (2020). A Wide-orbit Exoplanet OGLE-2012-BLG-0838Lb. \aj, 159(6), 261.
• Schmidtobreick, L., Ageorges, N., Amico, P., Brandner, W., Cerda, S., Cid, C., Close, L., Garces, E., Gillet, G., Girard, J., Guajardo, P., Hau, G., Hummel, W., Jung, Y., Kasper, M., Lidman, C., Lundin, L., Mardones, P., Mawet, D., , O'Neal, J., et al. (2020). NaCo \textemdash The Story of a Lifetime. The Messenger, 179, 7-11.
• Apai, D., Banzatti, A., Ballering, N. P., Bergin, E. A., Bixel, A., Birnstiel, T., Bose, M., Brittain, S., Cadillo-Quiroz, H., Carrera, D., Ciesla, F., Close, L., Desch, S. J., Dong, C., Dressing, C. D., Fernandes, R. B., France, K., Gharib-Nezhad, E., Haghighipour, N., , Hartnett, H. E., et al. (2019). Planetary Habitability Informed by Planet Formation and Exoplanet Demographics. \baas, 51(3), 475.
• Bowler, B., Sallum, S., Boss, A., {Brand, t. T., Briesemeister, Z., Bryan, M., Crepp, J., Currie, T., Fortney, J., Girard, J., Jensen-Clem, R., Kama, M., Kraus, A., Konopacky, Q., Liu, M., Marley, M., Mawet, D., Meshkat, T., Meyer, M., , Morley, C., et al. (2019). The Demographics and Atmospheres of Giant Planets with the ELTs. \baas, 51(3), 496.
• Brandt, T., Briesemeister, Z., Savransky, D., Fitzgerald, M., Mazin, B., Fortney, J., Dupuy, T., Bowler, B., Sallum, S., Mawet, D., Skemer, A., Vasisht, G., Miller-Blanchard, M., Wang, J., Guyon, O., Meshkat, T., Jensen-Clem, R., Serabyn, E., Ruane, G., , Liu, M., et al. (2019). Realizing the Promise of High-Contrast Imaging: More Than 100 Gas-Giant Planets with Masses, Orbits, and Spectra Enabled by Gaia+WFIRST Astrometry. \baas, 51(3), 269.
• Fortney, J., Robinson, T. D., Domagal-Goldman, S., Genio, A., Gordon, I. E., Gharib-Nezhad, E., Lewis, N., Sousa-Silva, C., Airapetian, V., Drouin, B., Hargreaves, R. J., Huang, X., Karman, T., Ramirez, R. M., Rieker, G. B., Tennyson, J., Wordsworth, R., Yurchenko, S. N., Johnson, A., , Lee, T. J., et al. (2019). The Need for Laboratory Measurements and Ab Initio Studies to Aid Understanding of Exoplanetary Atmospheres. Astro2020: Decadal Survey on Astronomy and Astrophysics, 2020, 146.
• Jang-Condell, H., Brittain, S., Weinberger, A., Liu, M., Faherty, J., Bae, J., Andrews, S., Ansdell, M., Birnstiel, T., Boss, A., Close, L., Currie, T., Desch, S. J., Dodson-Robinson, S., Dong, C., Duchene, G., Espaillat, C., Follette, K., Gaidos, E., , Gao, P., et al. (2019). Protoplanetary Disk Science Enabled by Extremely Large Telescopes. \baas, 51(3), 346.
• Lopez-Morales, M., Currie, T., Teske, J., Gaidos, E., Kempton, E., Males, J., Lewis, N., Rackham, B. V., Ben-Ami, S., Birkby, J., Charbonneau, D., Close, L., Crane, J., Dressing, C., Froning, C., Hasegawa, Y., Konopacky, Q., Kopparapu, R. K., Mawet, D., , Mennesson, B., et al. (2019). Detecting Earth-like Biosignatures on Rocky Exoplanets around Nearby Stars with Ground-based Extremely Large Telescopes. \baas, 51(3), 162.
• Mazin, B., Artigau, E., Bailey, V., Baranec, C., Beichman, C., Benneke, B., Birkby, J., Brandt, T., Chilcote, J., Chun, M., Close, L., Currie, T., Crossfield, I., Dekany, R., Delorme, J., Dong, C., Dong, R., Doyon, R., Dressing, C., , Fitzgerald, M., et al. (2019). Directly Imaging Rocky Planets from the Ground. \baas, 51(3), 128.
• McGehee, P., Boss, A., Close, L., Dodson-Robinson, S., Mawet, D., & Szentgyorgyi, A. (2019). Dynamical Processes in the Planet-Forming Environment. \baas, 51(3), 227.
• Miller, K., Males, J. R., Guyon, O., Close, L. M., Doelman, D., Snik, F., Por, E., Wilby, M. J., Keller, C., Bohlman, C., Van, G. K., Rodack, A., Knight, J., Lumbres, J., Bos, S., & Jovanovic, N. (2019). Spatial linear dark field control and holographic modal wavefront sensing with a vAPP coronagraph on MagAO-X. Journal of Astronomical Telescopes, Instruments, and Systems, 5, 049004.
• Poleski, R., Gaudi, B., Xie, X., Udalski, A., Yee, J., Skowron, J., Szyma{\'nski}, M., Soszy{\'nski}, I., Pietrukowicz, P., Koz{\lowski}, S., Wyrzykowski, \., Ulaczyk, K., Han, C., Dong, S., Morzinski, K., Males, J., Close, L., Gould, A., Pogge, R., , Beaulieu, J. -., et al. (2019). A Wide Orbit Exoplanet OGLE-2012-BLG-0838Lb. arXiv e-prints, arXiv:1901.05466.
• Sallum, S., Bailey, V., Bernstein, R. A., Boss, A., Bowler, B., Close, L., Currie, T., Dong, R., Espaillat, C., Fitzgerald, M. P., Follette, K. B., Fortney, J., Hasegawa, Y., Jang-Condell, H., Jovanovic, N., Kane, S. R., Konopacky, Q., Liu, M., Lozi, J., , Males, J., et al. (2019). Imaging Giant Protoplanets with the ELTs. \baas, 51(3), 527.
• Sallum, S., Skemer, A., Eisner, J., Marel, N., Sheehan, P., Close, L., {Ireland, }. M., Males, J., Morzinski, K., Bailey, V., Briguglio, R., & Puglisi, A. (2019). New Spatially Resolved Imaging of the SR 21 Transition Disk and Constraints on the Small-grain Disk Geometry. \apj, 883(1), 100.
• Stone, J., Skemer, A., Hinz, P., Bonavita, M., Kratter, K., Maire, A. -., Defrere, D., Bailey, V., Spalding, E., Leisenring, J., Desidera, S., Bonnefoy, M., Biller, B., Woodward, C., Henning, T., Skrutskie, M., Eisner, J., Crepp, J., Patience, J., , Weigelt, G., et al. (2019). VizieR Online Data Catalog: The LEECH exoplanet imaging survey (Stone+, 2018). VizieR Online Data Catalog, J/AJ/156/286.
• Wang, J. i., Meyer, M., Boss, A., Close, L., Currie, T., Dragomir, D., Fortney, J., Gaidos, E., Hasegawa, Y., Kitiashvili, I., Konopacky, Q., Lee, C., Lewis, N. K., Liu, M., Lupu, R., Mawet, D., Melis, C., Lopez-Morales, M., Morley, C. V., , Packham, C., et al. (2019). New Frontiers for Terrestrial-sized to Neptune-sized Exoplanets In the Era of Extremely Large Telescopes. \baas, 51(3), 200.
• Artigau, E., Bernstein, R., Brandt, T., Chilcote, J., Close, L., Crossfield, I., Delorme, J., Dressing, C., Fitzgerald, M., Fortney, J., Howard, A., Frazin, R., Jovanovic, N., Konopacky, Q., Lozi, J., Males, J., Marois, C., Mazin, B., Millar-Blanchaer, M., , Morzinski, K., et al. (2018). Direct Imaging in Reflected Light: Characterization of Older, Temperate Exoplanets With 30-m Telescopes. arXiv e-prints.
• Farinato, J., Bacciotti, F., Baffa, C., Baruffolo, A., Bergomi, M., Bianco, A., Bongiorno, A., Carbonaro, L., Carolo, E., Carlotti, A., Chinellato, S., Close, L., De Pascale, M., Dima, M., D'Orazi, V., Esposito, S., Fantinel, D., Farisato, G., Gaessler, W., , Giallongo, E., et al. (2018). SHARK-NIR, the coronagraphic camera for LBT, moving toward construction. arXiv e-prints.
• Shan, Y., Yee, J., Bowler, B., Cieza, L., Montet, B., Canovas, H., Liu, M., Close, L., Hinz, P., Males, J., Morzinski, K., Vaz, A., Bailey, V., B., F. K., & Team, M. (2018). VizieR Online Data Catalog: The multiplicity of M dwarfs in young moving groups (Shan+, 2017). VizieR Online Data Catalog, 184.
• Stone, J., Skemer, A., Hinz, P., Bonavita, M., Kratter, K., Maire, A., Defrere, D., Bailey, V., Spalding, E., Leisenring, J., Desidera, S., Bonnefoy, M., Biller, B., Woodward, C., Henning, T., Skrutskie, M., Eisner, J., Crepp, J., Patience, J., , Weigelt, G., et al. (2018). The LEECH Exoplanet Imaging Survey: Limits on Planet Occurrence Rates under Conservative Assumptions. \aj, 156, 286.
• Wagner, K., Dong, R., Sheehan, P., Apai, D., Kasper, M., McClure, M., Morzinski, K., Close, L., Males, J., Hinz, P., Quanz, S., & Fung, J. (2018). The Orbit of the Companion to HD 100453A: Binary-driven Spiral Arms in a Protoplanetary Disk. \apj, 854, 130.
• Wagner, K., Follete, K., Close, L., Apai, D., Gibbs, A., Keppler, M., M{\"uller}, A., Henning, T., Kasper, M., Wu, Y., Long, J., Males, J., Morzinski, K., & McClure, M. (2018). Magellan Adaptive Optics Imaging of PDS 70: Measuring the Mass Accretion Rate of a Young Giant Planet within a Gapped Disk. \apjl, 863, L8.
• Wu, Y., Close, L., Kim, J., Males, J., & Morzinski, K. (2018). The Intricate Structure of HH 508, the Brightest Microjet in the Orion Nebula. \apj, 854, 144.
• Follette, K., Rameau, J., Dong, R., Pueyo, L., Close, L., Duch{\^ene}, G., Fung, J., Leonard, C., Macintosh, B., Males, J., Marois, C., Millar-Blanchaer, M., Morzinski, K., Mullen, W., Perrin, M., Spiro, E., Wang, J., Ammons, S., Bailey, V., , Barman, T., et al. (2017). Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO. \aj, 153, 264.
• Kellogg, K., Prato, L., Torres, G., Schaefer, G., Avilez, I., Ru{\'{\i}z-Rodr\'{\i}guez}, D., Wasserman, L., Bonanos, A., Guenther, E., Neuh{\"auser}, R., Levine, S., Bosh, A., Morzinski, K., Close, L., Bailey, V., Hinz, P., & Males, J. (2017). The TWA 3 Young Triple System: Orbits, Disks, Evolution. \apj, 844, 168.
• Otten, G., Snik, F., Kenworthy, M., Keller, C., Males, J., Morzinski, K., Close, L., Codona, J., Hinz, P., Hornburg, K., Brickson, L., & Escuti, M. (2017). On-sky Performance Analysis of the Vector Apodizing Phase Plate Coronagraph on MagAO/Clio2. \apj, 834, 175.
• Rameau, J., Follette, K., Pueyo, L., Marois, C., Macintosh, B., Millar-Blanchaer, M. .., Wang, J., Vega, D., Doyon, R., Lafreni{\`ere}, D., Nielsen, E., Bailey, V., Chilcote, J., Close, L., Esposito, T., Males, J., Metchev, S., Morzinski, K., Ruffio, J., , Wolff, S., et al. (2017). An Optical/Near-infrared Investigation of HD 100546 b with the Gemini Planet Imager and MagAO. \aj, 153, 244.
• Shan, Y., Yee, J., Bowler, B., Cieza, L., Montet, B., C{\'anovas}, H., Liu, M., Close, L., Hinz, P., Males, J., Morzinski, K., Vaz, A., Bailey, V., Follette, K., & Team, M. (2017). The Multiplicity of M Dwarfs in Young Moving Groups. \apj, 846, 93.
• Shepard, M., Richardson, J., Taylor, P., Rodriguez-Ford, L., Conrad, A., Pater, I., Adamkovics, M., Kleer, K., Males, J., Morzinski, K., Close, L., Kaasalainen, M., Viikinkoski, M., Timerson, B., Reddy, V., Magri, C., Nolan, M., Howell, E., Benner, L., , Giorgini, J., et al. (2017). Radar observations and shape model of asteroid 16 Psyche. \icarus, 281, 388-403.
• Wu, Y., Close, L., Eisner, J., & Sheehan, P. (2017). An Explanation of the Very Low Radio Flux of Young Planet-mass Companions. \aj, 154, 234.
• Wu, Y., Sheehan, P., Males, J., Close, L., Morzinski, K., Teske, J., Haug-Baltzell, A. .., Merchant, N., & Lyons, E. (2017). An ALMA and MagAO Study of the Substellar Companion GQ Lup B*. \apj, 836, 223.
• Wu, Y., Smith, N., Close, L., Males, J., & Morzinski, K. (2017). Resolving the H$\alpha$-emitting Region in the Wind of $\eta$ Carinae. \apjl, 841, L7.
• Espinoza, N., Brahm, R., Jord{\'an}, A., Jenkins, J., Rojas, F., Jofr{\'e}, P., M{\"adler}, T., Rabus, M., Chanam{\'e}, J., Pantoja, B., Soto, M., Morzinski, K., Males, J., Ward-Duong, K. .., & Close, L. (2016). Discovery and Validation of a High-Density sub-Neptune from the K2 Mission. \apj, 830, 43.
• Rodigas, T., Arriagada, P., Faherty, J., Anglada-Escude, G. .., Kaib, N., Butler, R., Shectman, S., Weinberger, A., Males, J., Morzinski, K., Close, L., Hinz, P., Crane, J., Thompson, I., Teske, J., Diaz, M., Minniti, D., Lopez-Morales, M. .., Adams, F., & Boss, A. (2016). VizieR Online Data Catalog: MILO. I. HD 7449 radial velocities (Rodigas+, 2016). VizieR Online Data Catalog, 181.
• Rodigas, T., Arriagada, P., Faherty, J., Anglada-Escud{\'e}, G., Kaib, N., Butler, R., Shectman, S., Weinberger, A., Males, J., Morzinski, K., Close, L., Hinz, P., Crane, J., Thompson, I., Teske, J., D{\'{\i}az}, M., Minniti, D., Lopez-Morales, M. .., Adams, F., & Boss, A. (2016). MagAO Imaging of Long-period Objects (MILO). I. A Benchmark M Dwarf Companion Exciting a Massive Planet around the Sun-like Star HD 7449. \apj, 818, 106.
• Rodigas, T., Bergeron, P., Simon, A., Arriagada, P., Faherty, J., Anglada-Escud{\'e}, G., Mamajek, E., Weinberger, A., Butler, R., Males, J., Morzinski, K., Close, L., Hinz, P., Bailey, J., Carter, B., Jenkins, J., Jones, H., O'Toole, S., Tinney, C., , Wittenmyer, R., et al. (2016). MagAO Imaging of Long-period Objects (MILO). II. A Puzzling White Dwarf around the Sun-like Star HD 11112. \apj, 831, 177.
• Schlieder, J., Skemer, A., Maire, A., Desidera, S., Hinz, P., Skrutskie, M., Leisenring, J., Bailey, V., Defr{\`ere}, D., Esposito, S., Strassmeier, K., Weber, M., Biller, B., Bonnefoy, M., Buenzli, E., Close, L., Crepp, J., Eisner, J., Hofmann, K., , Henning, T., et al. (2016). The LEECH Exoplanet Imaging Survey: Orbit and Component Masses of the Intermediate-Age, Late-Type Binary NO UMa. \apj, 818, 1.
• Skemer, A., Morley, C., Zimmerman, N., Skrutskie, M., Leisenring, J., Buenzli, E., Bonnefoy, M., Bailey, V., Hinz, P., Defr{\'ere}, D., Esposito, S., Apai, D., Biller, B., Brandner, W., Close, L., Crepp, J., De, R. R., Desidera, S., Eisner, J., , Fortney, J., et al. (2016). The LEECH Exoplanet Imaging Survey: Characterization of the Coldest Directly Imaged Exoplanet, GJ 504 b, and Evidence for Superstellar Metallicity. \apj, 817, 166.
• Stone, J., Eisner, J., Skemer, A., Morzinski, K., Close, L., Males, J., Rodigas, T., Hinz, P., & Puglisi, A. (2016). L-band Spectroscopy with Magellan-AO/Clio2: First Results on Young Low-mass Companions. \apj, 829, 39.
• Stone, J., Skemer, A., Kratter, K., Dupuy, T., Close, L., Eisner, J., Fortney, J., Hinz, P., Males, J., Morley, C., Morzinski, K., & Ward-Duong, K. .. (2016). Adaptive Optics imaging of VHS 1256-1257: A Low Mass Companion to a Brown Dwarf Binary System. \apjl, 818, L12.
• Van, D. S., Ascenso, J., Wu, Y., Smith, N., Close, L., Males, J., Morzinski, K., Foley, R., Jha, S., Miller, A., Filippenko, A., & Alves, J. (2016). Possible Identification of the Progenitor of SN 2016adj in NGC 5128 (Centaurus A). The Astronomer's Telegram, 8693.
• Wu, Y., Close, L., Bailey, V., Rodigas, T., Males, J., Morzinski, K., Follette, K., Hinz, P., Puglisi, A., Briguglio, R., & Xompero, M. (2016). Magellan AO System z\prime, Y $_ S $, and L\prime Observations of the Very Wide 650 AU HD 106906 Planetary System. \apj, 823, 24.
• Follette, K. B., Grady, C. A., Swearingen, J. R., Sitko, M. L., Champney, E. H., Marel, N., Takami, M., Kuchner, M. J., Close, L. M., Muto, T., Mayama, S., McElwain, M. W., Fukagawa, M., Maaskant, K., Min, M., Russell, R. W., Kudo, T., Kusakabe, N., Hashimoto, J., , Abe, L., et al. (2015). SEEDS Adaptive Optics Imaging of the Asymmetric Transition Disk Oph IRS 48 in Scattered Light. apj, 798, 132.
• Mauerhan, J. C., Smith, N., Van Dyk, S. D., Morzinski, K. M., Close, L. M., Hinz, P. M., Males, J. R., & Rodigas, T. J. (2015). Multiwavelength Observations of NaSt1 (WR 122): Equatorial Mass Loss and X-rays from an Interacting Wolf-Rayet Binary. ArXiv e-prints.
• Morzinski, K., Males, J., Skemer, A., Close, L., Hinz, P., Rodigas, T., Puglisi, A., Esposito, S., Riccardi, A., Pinna, E., Xompero, M., Briguglio, R., Bailey, V., Follette, K., Kopon, D., Weinberger, A., & Wu, Y. (2015). Magellan Adaptive Optics First-light Observations of the Exoplanet $\beta$ Pic b. II. 3-5 $\mu$m Direct Imaging with MagAO+Clio, and the Empirical Bolometric Luminosity of a Self-luminous Giant Planet. \apj, 815, 108.
• Rodigas, T. J., Stark, C. C., Weinberger, A. J., Debes, J. H., Hinz, P. M., Close, L. M., Chen, C., Smith, P. S., Males, J. R., Skemer, A. J., Puglisi, A., Follette, K. B., Morzinski, K. K., Wu, Y., Briguglio, R., Esposito, S., Pinna, E., Riccardi, A., Schneider, G. H., & Xompero, M. (2015). On the Morphology and Chemical Composition of the HR 4796A Debris Disk. Astrophysical Journal, 798, 96 - 111. doi:10.1088/0004-637X/798/2/96
• Rodigas, T. J., Stark, C. C., Weinberger, A., Debes, J. H., Hinz, P. M., Close, L., Chen, C., Smith, P. S., Males, J. R., Skemer, A. J., Puglisi, A., Follette, K. B., Morzinski, K., Wu, Y., Briguglio, R., Esposito, S., Pinna, E., Riccardi, A., Schneider, G., & Xompero, M. (2015). On the Morphology and Chemical Composition of the HR 4796A Debris Disk. apj, 798, 96.
• Sallum, S., Eisner, J. A., Close, L. M., Hinz, P. M., Skemer, A. J., Bailey, V., Briguglio, R., Follette, K. B., Males, J. R., Morzinski, K. M., Puglisi, A., Rodigas, T. J., Weinberger, A. J., & Xompero, M. (2015). New Spatially Resolved Observations of the T Cha Transition Disk and Constraints on the Previously Claimed Substellar Companion. ArXiv e-prints.
• Wu, Y., Close, L. M., Males, J. R., Barman, T. S., Morzinski, K. M., Follette, K. B., Bailey, V., Rodigas, T. J., Hinz, P., Puglisi, A., Xompero, M., & Briguglio, R. (2015). New Extinction and Mass Estimates from Optical Photometry of the Very Low Mass Brown Dwarf Companion CT Chamaeleontis B with the Magellan AO System. ArXiv e-prints.
• {Biller}, B., {Liu}, M., {Rice}, K., {Wahhaj}, Z., {Nielsen}, E., {Hayward}, T., {Kuchner}, M., {Close}, L., {Chun}, M., {Ftaclas}, C., , D. (2015). "{The Gemini NICI Planet-Finding Campaign: asymmetries in the HD 141569 disc}". mnras, 450, 4446-4457.
• {Follette}, K., {Grady}, C., {Swearingen}, J., {Sitko}, M., {Champney}, E., Marel}, N., {Takami}, M., {Kuchner}, M., {Close}, L., {Muto}, T., {Mayama}, S., {McElwain}, M., {Fukagawa}, M., {Maaskant}, K., {Min}, M., {Russell}, R., {Kudo}, T., {Kusakabe}, N., {Hashimoto}, J., , {Abe}, L., et al. (2015). "{SEEDS Adaptive Optics Imaging of the Asymmetric Transition Disk Oph IRS 48 in Scattered Light}". apj, 798, 132.
• {Jovanovic}, N., {Martinache}, F., {Guyon}, O., {Clergeon}, C., {Singh}, G., {Kudo}, T., {Garrel}, V., {Newman}, K., {Doughty}, D., {Lozi}, J., {Males}, J., {Minowa}, Y., {Hayano}, Y., {Takato}, N., {Morino}, J., {Kuhn}, J., {Serabyn}, E., {Norris}, B., {Tuthill}, P., , {Schworer}, G., et al. (2015). "{The Subaru Coronagraphic Extreme Adaptive Optics System: Enabling High-Contrast Imaging on Solar-System Scales}". pasp, 127, 890-910.
• {Maire}, A., {Skemer}, A., {Hinz}, P., {Desidera}, S., {Esposito}, S., {Gratton}, R., {Marzari}, F., {Skrutskie}, M., {Biller}, B., {Defr{`e}re}, D., {Bailey}, V., {Leisenring}, J., {Apai}, D., {Bonnefoy}, M., {Brandner}, W., {Buenzli}, E., {Claudi}, R., {Close}, L., {Crepp}, J., , {De Rosa}, R., et al. (2015). "{The LEECH Exoplanet Imaging Survey. Further constraints on the planet architecture of the HR 8799 system (Corrigendum)}". aap, 579, C2.
• {Maire}, A., {Skemer}, A., {Hinz}, P., {Desidera}, S., {Esposito}, S., {Gratton}, R., {Marzari}, F., {Skrutskie}, M., {Biller}, B., {Defr{`e}re}, D., {Bailey}, V., {Leisenring}, J., {Apai}, D., {Bonnefoy}, M., {Brandner}, W., {Buenzli}, E., {Claudi}, R., {Close}, L., {Crepp}, J., , {De Rosa}, R., et al. (2015). "{The LEECH Exoplanet Imaging Survey. Further constraints on the planet architecture of the HR 8799 system}". aap, 576, A133.
• {Mauerhan}, J., {Smith}, N., {Van Dyk}, S., {Morzinski}, K., {Close}, L., {Hinz}, P., {Males}, J., , T. (2015). "{Multiwavelength observations of NaSt1 (WR 122): equatorial mass loss and X-rays from an interacting Wolf-Rayet binary}". mnras, 450, 2551-2563.
• {Monelli}, M., {Testa}, V., {Bono}, G., {Ferraro}, I., {Iannicola}, G., {Fiorentino}, G., {Arcidiacono}, C., {Massari}, D., {Boutsia}, K., {Briguglio}, R., {Busoni}, L., {Carini}, R., {Close}, L., {Cresci}, G., {Esposito}, S., {Fini}, L., {Fumana}, M., {Guerra}, J., {Hill}, J., , {Kulesa}, C., et al. (2015). "{The Absolute Age of the Globular Cluster M15 Using Near-infrared Adaptive Optics Images from PISCES/LBT.}". apj, 812, 25.
• {Morzinski}, K., {Males}, J., {Skemer}, A., {Close}, L., {Hinz}, P., {Rodigas}, T., {Puglisi}, A., {Esposito}, S., {Riccardi}, A., {Pinna}, E., {Xompero}, M., {Briguglio}, R., {Bailey}, V., {Follette}, K., {Kopon}, D., {Weinberger}, A., , Y. (2015). "{Magellan Adaptive Optics First-light Observations of the Exoplanet {$beta$} Pic b. II. 3-5 {$mu$}m Direct Imaging with MagAO+Clio, and the Empirical Bolometric Luminosity of a Self-luminous Giant Planet}". apj, 815, 108.
• {Rodigas}, T., {Stark}, C., {Weinberger}, A., {Debes}, J., {Hinz}, P., {Close}, L., {Chen}, C., {Smith}, P., {Males}, J., {Skemer}, A., {Puglisi}, A., {Follette}, K., {Morzinski}, K., {Wu}, Y., {Briguglio}, R., {Esposito}, S., {Pinna}, E., {Riccardi}, A., {Schneider}, G., , M. (2015). "{On the Morphology and Chemical Composition of the HR 4796A Debris Disk}". apj, 798, 96.
• {Rodigas}, T., {Weinberger}, A., {Mamajek}, E., {Males}, J., {Close}, L., {Morzinski}, K., {Hinz}, P., , N. (2015). "{Direct Exoplanet Detection with Binary Differential Imaging}". apj, 811, 157.
• {Sallum}, S., {Eisner}, J., {Close}, L., {Hinz}, P., {Skemer}, A., {Bailey}, V., {Briguglio}, R., {Follette}, K., {Males}, J., {Morzinski}, K., {Puglisi}, A., {Rodigas}, T., {Weinberger}, A., , M. (2015). "{New Spatially Resolved Observations of the T Cha Transition Disk and Constraints on the Previously Claimed Substellar Companion}". apj, 801, 85.
• {Sallum}, S., {Follette}, K., {Eisner}, J., {Close}, L., {Hinz}, P., {Kratter}, K., {Males}, J., {Skemer}, A., {Macintosh}, B., {Tuthill}, P., {Bailey}, V., {Defr{`e}re}, D., {Morzinski}, K., {Rodigas}, T., {Spalding}, E., {Vaz}, A., , A. (2015). "{Accreting protoplanets in the LkCa 15 transition disk}". nat, 527, 342-344.
• {Wu}, Y., {Close}, L., {Males}, J., {Barman}, T., {Morzinski}, K., {Follette}, K., {Bailey}, V., {Rodigas}, T., {Hinz}, P., {Puglisi}, A., {Xompero}, M., , R. (2015). "{New Extinction and Mass Estimates from Optical Photometry of the Very Low Mass Brown Dwarf Companion CT Chamaeleontis B with the Magellan AO System}". apj, 801, 4.
• {Wu}, Y., {Close}, L., {Males}, J., {Barman}, T., {Morzinski}, K., {Follette}, K., {Bailey}, V., {Rodigas}, T., {Hinz}, P., {Puglisi}, A., {Xompero}, M., , R. (2015). "{New Extinction and Mass Estimates of the Low-mass Companion 1RXS 1609 B with the Magellan AO System: Evidence of an Inclined Dust Disk}". apjl, 807, L13.
• Bailey, V., Meshkat, T., Reiter, M., Morzinski, K., Males, J., Su, K. Y., Hinz, P. M., Kenworthy, M., Stark, D., Mamajek, E., Briguglio, R., Close, L. M., Follette, K. B., Puglisi, A., Rodigas, T., Weinberger, A. J., & Xompero, M. (2014). HD 106906 b: A Planetary-mass Companion Outside a Massive Debris Disk. apjl, 780, L4.
• Biller, B. A., Males, J., Rodigas, T., Morzinski, K., Close, L. M., Juh'asz, A., Follette, K. B., Lacour, S., Benisty, M., Sicilia-Aguilar, A., Hinz, P. M., Weinberger, A., Henning, T., Pott, J., Bonnefoy, M., & K"ohler, R. (2014). An Enigmatic Point-like Feature within the HD 169142 Transitional Disk. apjl, 792, L22.
• Close, L. M., Follette, K. B., Males, J. R., Puglisi, A., Xompero, M., Apai, D., Najita, J., Weinberger, A. J., Morzinski, K., Rodigas, T. J., Hinz, P., Bailey, V., & Briguglio, R. (2014). Discovery of H$alpha$ Emission from the Close Companion inside the Gap of Transitional Disk HD 142527. apjl, 781, L30.
• Maire, A., Skemer, A. J., Hinz, P. M., Desidera, S., Esposito, S., Gratton, R., Marzari, F., Skrutskie, M. F., Biller, B. A., Defr`ere, D., Bailey, V. P., Leisenring, J. M., Apai, D., Bonnefoy, M., Brandner, W., Buenzli, E., Claudi, R. U., Close, L. M., Crepp, J. R., , De Rosa, R. J., et al. (2014). The LEECH Exoplanet Imaging Survey. Further constraints on the planet architecture of the HR 8799 system. ArXiv e-prints.
• Males, J. R., Close, L. M., Morzinski, K. M., Wahhaj, Z., Liu, M. C., Skemer, A. J., Kopon, D., Follette, K. B., Puglisi, A., Esposito, S., Riccardi, A., Pinna, E., Xompero, M., Briguglio, R., Biller, B. A., Nielsen, E. L., Hinz, P. M., Rodigas, T. J., Hayward, T. L., , Chun, M., et al. (2014). Magellan Adaptive Optics First-light Observations of the Exoplanet $beta$ Pic B. I. Direct Imaging in the Far-red Optical with MagAO+VisAO and in the Near-ir with NICI. apj, 786, 32.
• Nielsen, E. L., Liu, M. C., Wahhaj, Z., Biller, B. A., Hayward, T. L., Males, J. R., Close, L. M., Morzinski, K. M., Skemer, A. J., Kuchner, M. J., Rodigas, T. J., Hinz, P. M., Chun, M., Ftaclas, C., & Toomey, D. W. (2014). The Gemini NICI Planet-Finding Campaign: The Orbit of the Young Exoplanet $beta$ Pictoris b. apj, 794, 158.
• Rodigas, T. J., Follette, K. B., Weinberger, A., Close, L., & Hines, D. C. (2014). Polarized Light Imaging of the HD 142527 Transition Disk with the Gemini Planet Imager: Dust around the Close-in Companion. apjl, 791, L37.
• Skemer, A. J., Marley, M. S., Hinz, P. M., Morzinski, K. M., Skrutskie, M. F., Leisenring, J. M., Close, L. M., Saumon, D., Bailey, V. P., Briguglio, R., Defrere, D., Esposito, S., Follette, K. B., Hill, J. M., Males, J. R., Puglisi, A., Rodigas, T. J., & Xompero, M. (2014). Directly Imaged L-T Transition Exoplanets in the Mid-infrared. apj, 792, 17.
• Wahhaj, Z., Liu, M. C., Biller, B. A., Nielsen, E. L., Hayward, T. L., Kuchner, M., Close, L. M., Chun, M., Ftaclas, C., & Toomey, D. W. (2014). The Gemini NICI planet-finding campaign: The offset ring of HR 4796 A. aap, 567, A34.
• Biller, B. A., Liu, M. C., Wahhaj, Z., Nielsen, E. L., Hayward, T. L., Males, J. R., Skemer, A., Close, L. M., Chun, M., Ftaclas, C., Clarke, F., Thatte, N., Shkolnik, E. L., Reid, I. N., Hartung, M., Boss, A., Lin, D., Alencar, S. H., Gouveia Dal Pino, E., , Gregorio-Hetem, J., et al. (2013). The Gemini/NICI Planet-Finding Campaign: The Frequency of Planets around Young Moving Group Stars. apj, 777, 160.
• Close, L. M., Males, J. R., Morzinski, K., Kopon, D., Follette, K., Rodigas, T. J., Hinz, P., Wu, Y., Puglisi, A., Esposito, S., Riccardi, A., Pinna, E., Xompero, M., Briguglio, R., Uomoto, A., & Hare, T. (2013). Diffraction-limited Visible Light Images of Orion Trapezium Cluster with the Magellan Adaptive Secondary Adaptive Optics System (MagAO). apj, 774, 94.
• Esposito, S., Mesa, D., Skemer, A., Arcidiacono, C., Claudi, R. U., Desidera, S., Gratton, R., Mannucci, F., Marzari, F., Masciadri, E., Close, L., Hinz, P., Kulesa, C., McCarthy, D., Males, J., Agapito, G., Argomedo, J., Boutsia, K., Briguglio, R., , Brusa, G., et al. (2013). LBT observations of the HR 8799 planetary system. First detection of HR 8799e in H band. aap, 549, A52.
• Follette, K. B., Close, L. M., Males, J. R., Kopon, D., Wu, Y., Morzinski, K. M., Hinz., P., Rodigas, T. J., Puglisi, A., Esposito, S., Riccardi, A., Pinna, E., Xompero, M., & Briguglio, R. (2013). The First Circumstellar Disk Imaged in Silhouette at Visible Wavelengths with Adaptive Optics: MagAO Imaging of Orion 218-354. apjl, 775, L13.
• Follette, K. B., Tamura, M., Hashimoto, J., Whitney, B., Grady, C., Close, L., Andrews, S. M., Kwon, J., Wisniewski, J., Brandt, T. D., Mayama, S., Kandori, R., Dong, R., Abe, L., Brandner, W., Carson, J., Currie, T., Egner, S. E., Feldt, M., , Goto, M., et al. (2013). Mapping H-band Scattered Light Emission in the Mysterious SR21 Transitional Disk. apj, 767, 10.
• Kopon, D., Close, L. M., Males, J. R., & Gasho, V. (2013). Design, Implementation, and On-Sky Performance of an Advanced Apochromatic Triplet Atmospheric Dispersion Corrector for the Magellan Adaptive Optics System and VisAO Camera. pasp, 125, 966-975.
• Males, J. R., Skemer, A. J., & Close, L. M. (2013). Direct Imaging in the Habitable Zone and the Problem of Orbital Motion. apj, 771, 10.
• Nielsen, E. L., Liu, M. C., Wahhaj, Z., Biller, B. A., Hayward, T. L., Close, L. M., Males, J. R., Skemer, A. J., Chun, M., Ftaclas, C., Alencar, S. H., Artymowicz, P., Boss, A., Clarke, F., Gouveia Dal Pino, E., Gregorio-Hetem, J., Hartung, M., Ida, S., Kuchner, M., , Lin, D. N., et al. (2013). The Gemini NICI Planet-Finding Campaign: The Frequency of Giant Planets around Young B and A Stars. apj, 776, 4.
• Wahhaj, Z., Liu, M. C., Biller, B. A., Nielsen, E. L., Close, L. M., Hayward, T. L., Hartung, M., Chun, M., Ftaclas, C., & Toomey, D. W. (2013). The Gemini NICI Planet-Finding Campaign: The Companion Detection Pipeline. apj, 779, 80.
• Wahhaj, Z., Liu, M. C., Nielsen, E. L., Biller, B. A., Hayward, T. L., Close, L. M., Males, J. R., Skemer, A., Ftaclas, C., Chun, M., Thatte, N., Tecza, M., Shkolnik, E. L., Kuchner, M., Reid, I. N., Gouveia Dal Pino, E. M., Alencar, S. H., Gregorio-Hetem, J., Boss, A., , Lin, D. N., et al. (2013). The Gemini Planet-finding Campaign: The Frequency Of Giant Planets around Debris Disk Stars. apj, 773, 179.
• Wu, Y., Close, L. M., Males, J. R., Follette, K., Morzinski, K., Kopon, D., Rodigas, T. J., Hinz, P., Puglisi, A., Esposito, S., Pinna, E., Riccardi, A., Xompero, M., & Briguglio, R. (2013). High Resolution H$alpha$ Images of the Binary Low-mass Proplyd LV 1 with the Magellan AO System. apj, 774, 45.
• Close, L. M., Puglisi, A., Males, J. R., Arcidiacono, C., Skemer, A., Guerra, J. C., Busoni, L., Brusa, G., Pinna, E., Miller, D. L., Riccardi, A., McCarthy, D. W., Xompero, M., Kulesa, C., Quiros-Pacheco, F., Argomedo, J., Brynnel, J., Esposito, S., Mannucci, F., , Boutsia, K., et al. (2012). High-resolution Images of Orbital Motion in the Orion Trapezium Cluster with the LBT AO System. apj, 749, 180.
• Dittmann, J. A., Close, L. M., Scuderi, L. J., Turner, J., & Stephenson, P. C. (2012). A revised orbital ephemeris for HAT-P-9b. na, 17, 438-441.
• Males, J. R., Close, L. M., Skemer, A. J., Hinz, P. M., Hoffmann, W. F., & Marengo, M. (2012). Four Decades of IRC +10216: Evolution of a Carbon-rich Dust Shell Resolved at 10 $mu$m with MMT Adaptive Optics and MIRAC4. apj, 744, 133.
• Nielsen, E. L., Liu, M. C., Wahhaj, Z., Biller, B. A., Hayward, T. L., Boss, A., Bowler, B., Kraus, A., Shkolnik, E. L., Tecza, M., Chun, M., Clarke, F., Close, L. M., Ftaclas, C., Hartung, M., Males, J. R., Reid, I. N., Skemer, A. J., Alencar, S. H., , Burrows, A., et al. (2012). The Gemini NICI Planet-Finding Campaign: Discovery of a Multiple System Orbiting the Young A Star HD 1160. apj, 750, 53.
• Rodigas, T. J., Hinz, P. M., Leisenring, J., Vaitheeswaran, V., Skemer, A. J., Skrutskie, M., Su, K. Y., Bailey, V., Schneider, G., Close, L., Mannucci, F., Esposito, S., Arcidiacono, C., Pinna, E., Argomedo, J., Agapito, G., Apai, D., Bono, G., Boutsia, K., , Briguglio, R., et al. (2012). The Gray Needle: Large Grains in the HD 15115 Debris Disk from LBT/PISCES/Ks and LBTI/LMIRcam/L' Adaptive Optics Imaging. apj, 752, 57.
• Skemer, A. J., Hinz, P. M., Esposito, S., Burrows, A., Leisenring, J., Skrutskie, M., Desidera, S., Mesa, D., Arcidiacono, C., Mannucci, F., Rodigas, T. J., Close, L., McCarthy, D., Kulesa, C., Agapito, G., Apai, D., Argomedo, J., Bailey, V., Boutsia, K., , Briguglio, R., et al. (2012). First Light LBT AO Images of HR 8799 bcde at 1.6 and 3.3 $mu$m: New Discrepancies between Young Planets and Old Brown Dwarfs. apj, 753, 14.
• Biller, B., Allers, K., Liu, M., Close, L. M., & Dupuy, T. (2011). A Keck LGS AO Search for Brown Dwarf and Planetary Mass Companions to Upper Scorpius Brown Dwarfs. apj, 730, 39.
• Guirado, J. C., Marcaide, J. M., Mart'i-Vidal, I., Le Bouquin, J., Close, L. M., Cotton, W. D., & Montalb'an, J. (2011). The size of AB Doradus A from VLTI/AMBER interferometry. aap, 533, A106.
• Skemer, A. J., & Close, L. M. (2011). Sirius B Imaged in the Mid-infrared: No Evidence for a Remnant Planetary System. apj, 730, 53.
• Skemer, A. J., Close, L. M., Greene, T. P., Hinz, P. M., Hoffmann, W. F., & Males, J. R. (2011). Dust Grain Evolution in Spatially Resolved T Tauri Binaries. apj, 740, 43.
• Skemer, A. J., Close, L. M., SzH ucs, L., Apai, D., Pascucci, I., & Biller, B. A. (2011). Evidence Against an Edge-on Disk Around the Extrasolar Planet, 2MASS 1207 b and a New Thick-cloud Explanation for Its Underluminosity. apj, 732, 107.
• Wahhaj, Z., Liu, M. C., Biller, B. A., Clarke, F., Nielsen, E. L., Close, L. M., Hayward, T. L., Mamajek, E. E., Cushing, M., Dupuy, T., Tecza, M., Thatte, N., Chun, M., Ftaclas, C., Hartung, M., Reid, I. N., Shkolnik, E. L., Alencar, S. H., Artymowicz, P., , Boss, A., et al. (2011). The Gemini NICI Planet-finding Campaign: Discovery of a Substellar L Dwarf Companion to the Nearby Young M Dwarf CD-35 2722. apj, 729, 139.
• Biller, B. A., Liu, M. C., Wahhaj, Z., Nielsen, E. L., Close, L. M., Dupuy, T. J., Hayward, T. L., Burrows, A., Chun, M., Ftaclas, C., Clarke, F., Hartung, M., Males, J., Reid, I. N., Shkolnik, E. L., Skemer, A., Tecza, M., Thatte, N., Alencar, S. H., , Artymowicz, P., et al. (2010). The Gemini NICI Planet-finding Campaign: Discovery of a Close Substellar Companion to the Young Debris Disk Star PZ Tel. apjl, 720, L82-L87.
• Cardoso, C. V., McCaughrean, M. J., King, R. R., Close, L. M., Scholz, R., Lenzen, R., Brandner, W., Lodieu, N., Zinnecker, H., Koehler, R., & Konopacky, Q. M. (2010). Dynamical masses for the nearest brown dwarf binary: $epsilon$ Indi Ba,b. Highlights of Astronomy, 15, 761-761.
• Close, L. (2010). Extrasolar planets: A giant surprise. nat, 468, 1048-1049.
• Close, L. M., & Males, J. R. (2010). A Search for Wide Companions to the Extrasolar Planetary System HR 8799. apj, 709, 342-348.
• Dittmann, J. A., Close, L. M., Scuderi, L. J., & Morris, M. D. (2010). Transit Observations of the WASP-10 System. apj, 717, 235-238.
• Jenkins, J. S., Jones, H. R., Biller, B., O'Toole, S. J., Pinfield, D. J., Close, L., Tinney, C. G., Butler, R. P., Wittenmyer, R., Carter, B., & Day-Jones, A. C. (2010). NACO-SDI imaging of known companion host stars from the AAPS and Keck planet search surveys. aap, 515, A17.
• Kopon, D., Close, L. M., & Gasho, V. (2010). An Advanced Atmospheric Dispersion Corrector: The Magellan Visible AO Camera. ArXiv e-prints.
• Kopon, D., Males, J. R., Close, L. M., & Gasho, V. (2010). Enabling Technologies for Visible Adaptive Optics: The Magellan Adaptive Secondary VisAO Camera. ArXiv e-prints.
• Nielsen, E. L., & Close, L. M. (2010). A Uniform Analysis of 118 Stars with High-contrast Imaging: Long-period Extrasolar Giant Planets are Rare Around Sun-like Stars. apj, 717, 878-896.
• Scuderi, L. J., Dittmann, J. A., Males, J. R., Green, E. M., & Close, L. M. (2010). On the Apparent Orbital Inclination Change of the Extrasolar Transiting Planet TrES-2b. apj, 714, 462-468.
• Skemer, A. J., Close, L. M., Hinz, P. M., Hoffmann, W. F., Greene, T. P., Males, J. R., & Beck, T. L. (2010). ISM Dust Grains and N-band Spectral Variability in the Spatially Resolved Subarcsecond Binary UY Aur. apj, 711, 1280-1290.
• Biller, B., Trauger, J., Moody, D., Close, L., Kuhnert, A., Stapelfeldt, K., Traub, W. A., & Kern, B. (2009). A Multiwavelength Differential Imaging Experiment for the High Contrast Imaging Testbed. pasp, 121, 716-727.
• Dittmann, J. A., Close, L. M., Green, E. M., & Fenwick, M. (2009). A Tentative Detection of a Starspot During Consecutive Transits of an Extrasolar Planet from the Ground: No Evidence of a Double Transiting Planet System Around TrES-1. apj, 701, 756-763.
• Dittmann, J. A., Close, L. M., Green, E. M., Scuderi, L. J., & Males, J. R. (2009). Follow-up Observations of the Neptune Mass Transiting Extrasolar Planet HAT-P-11b. apjl, 699, L48-L51.
• Skemer, A. J., Hinz, P. M., Hoffmann, W. F., Close, L. M., Kendrew, S., Mathar, R. J., Stuik, R., Greene, T. P., Woodward, C. E., & Kelley, M. S. (2009). A Direct Measurement of Atmospheric Dispersion in N-band Spectra: Implications for Mid-IR Systems on ELTs. pasp, 121, 897-904.
• Hinkle, K. H., Lebzelter, T., Joyce, R. R., Ridgway, S., Close, L., Hron, J., & Andre, K. (2008). Imaging ejecta from the final flash star V605 Aquilae. aap, 479, 817-826.
• Nielsen, E. L., Close, L. M., Biller, B. A., Masciadri, E., & Lenzen, R. (2008). Constraints on Extrasolar Planet Populations from VLT NACO/SDI and MMT SDI and Direct Adaptive Optics Imaging Surveys: Giant Planets are Rare at Large Separations. apj, 674, 466-481.
• Peters, M. A., Close, L. M., Rademacher, M., Stalcup, T., Swartzlander, G. A., Ford, E., & Abdul-Malik, R. S. (2008). A high-Strehl low-resolution optical imager (BESSEL): Detection of a 0.7 $lambda$/ D separation binary from the ground. na, 13, 359-369.
• Skemer, A. J., Close, L. M., Hinz, P. M., Hoffmann, W. F., Kenworthy, M. A., & Miller, D. L. (2008). Evidence for Misaligned Disks in the T Tauri Triple System: 10 $mu$m Superresolution with MMTAO and Markov Chains. apj, 676, 1082-1087.
• Swartzlander, G. A., Ford, E. L., Abdul-Malik, R. S., Close, L. M., Peters, M. A., Palacios, D. M., & Wilson, D. W. (2008). Astronomical demonstration of an optical vortex coronagraph. Optics Express, 16, 10200.
• Swartzlander, G. A., Ford, E. L., Abdul-Malik, R. S., Close, L. M., Peters, M. A., Palacios, D. M., & Wilson, D. W. (2008). Contrast Enhancement of Binary Star System Using an Optical Vortex Coronagraph. ArXiv e-prints.
• Wang, S., Looney, L. W., Brandner, W., & Close, L. M. (2008). Dense Molecular Gas in a Young Cluster around MWC 1080: Rule of the Massive Star. apj, 673, 315-330.
• Biller, B. A., & Close, L. M. (2007). A Direct Distance and Luminosity Determination for a Self-luminous Giant Exoplanet: The Trigonometric Parallax to 2MASSW J1207334-393254Ab. apjl, 669, L41-L44.
• Biller, B. A., Close, L. M., Masciadri, E., Nielsen, E., Lenzen, R., Brandner, W., McCarthy, D., Hartung, M., Kellner, S., Mamajek, E., Henning, T., Miller, D., Kenworthy, M., & Kulesa, C. (2007). An Imaging Survey for Extrasolar Planets around 45 Close, Young Stars with the Simultaneous Differential Imager at the Very Large Telescope and MMT. apjs, 173, 143-165.
• Burgasser, A. J., Reid, I. N., Siegler, N., Close, L., Allen, P., Lowrance, P., & Gizis, J. (2007). Not Alone: Tracing the Origins of Very-Low-Mass Stars and Brown Dwarfs Through Multiplicity Studies. Protostars and Planets V, 427-441.
• Close, L. M., Thatte, N., Nielsen, E. L., Abuter, R., Clarke, F., & Tecza, M. (2007). New Photometry and Spectra of AB Doradus C: An Accurate Mass Determination of a Young Low-Mass Object with Theoretical Evolutionary Tracks. apj, 665, 736-743.
• Close, L. M., Zuckerman, B., Song, I., Barman, T., Marois, C., Rice, E. L., Siegler, N., Macintosh, B., Becklin, E. E., Campbell, R., Lyke, J. E., Conrad, A., & Le Mignant, D. (2007). The Wide Brown Dwarf Binary Oph 1622-2405 and Discovery of a Wide, Low-Mass Binary in Ophiuchus (Oph 1623-2402): A New Class of Young Evaporating Wide Binaries?. apj, 660, 1492-1506.
• Daemgen, S., Siegler, N., Reid, I. N., & Close, L. M. (2007). Discovery of Nine New Companions to Nearby Young M Stars with the Altair AO System. apj, 654, 558-569.
• Geissler, K., Kellner, S., Brandner, W., Masciadri, E., Hartung, M., Henning, T., Lenzen, R., Close, L., Endl, M., & K"urster, M. (2007). A direct and differential imaging search for sub-stellar companions to $epsilon$ Indi A. aap, 461, 665-668.
• Janson, M., Brandner, W., Henning, T., Lenzen, R., McArthur, B., Benedict, G. F., Reffert, S., Nielsen, E., Close, L., Biller, B., Kellner, S., G"unther, E., Hatzes, A., Masciadri, E., Geissler, K., & Hartung, M. (2007). NACO-SDI Direct Imaging Search for the Exoplanet $epsilon$ Eri b. aj, 133, 2442-2456.
• Janson, M., Brandner, W., Lenzen, R., Close, L., Nielsen, E., Hartung, M., Henning, T., & Bouy, H. (2007). Improved age constraints for the AB Doradus quadruple system. The binary nature of AB Doradus B. aap, 462, 615-620.
• Kasper, M., Biller, B. A., Burrows, A., Brandner, W., Budaj, J., & Close, L. M. (2007). The very nearby M/T dwarf binary SCR 1845-6357. aap, 471, 655-659.
• Siegler, N., Close, L. M., Burgasser, A. J., Cruz, K. L., Marois, C., Macintosh, B., & Barman, T. (2007). Discovery of a 66 mas Ultracool Binary with Laser Guide Star Adaptive Optics. aj, 133, 2320-2326.
• Thatte, N., Abuter, R., Tecza, M., Nielsen, E. L., Clarke, F. J., & Close, L. M. (2007). Very high contrast integral field spectroscopy of AB Doradus C: 9-mag contrast at 0.2arcsec without a coronagraph using spectral deconvolutiondagger. mnras, 378, 1229-1236.
• Biller, B. A., Close, L. M., Li, A., Marengo, M., Bieging, J. H., Hinz, P. M., Hoffmann, W. F., Brusa, G., & Miller, D. (2006). Resolving the Dusty Circumstellar Structure of the Enigmatic Symbiotic Star CH Cygni with the MMT Adaptive Optics System. apj, 647, 464-470.
• Biller, B. A., Close, L. M., Masciadri, E., Lenzen, R., Brandner, W., McCarthy, D., Henning, T., Nielsen, E., & Hartung, M. (2006). A Survey of Close, Young Stars with the Simultaneous Differential Imager (SDI) at the VLT and MMT. ArXiv Astrophysics e-prints.
• Biller, B. A., Kasper, M., Close, L. M., Brandner, W., & Kellner, S. (2006). Discovery of a Brown Dwarf Very Close to the Sun: A Methane-rich Brown Dwarf Companion to the Low-Mass Star SCR 1845-6357. apjl, 641, L141-L144.
• Biller, B. A., Kasper, M., Close, L. M., Brandner, W., & Kellner, S. (2006). Discovery of the Closest Brown Dwarf to the Sun? A Methane Rich Brown Dwarf around the Nearby M8.5 Star SCR 1845-6357. ArXiv Astrophysics e-prints.
• Guirado, J. C., Mart'i-Vidal, I., Marcaide, J. M., Close, L. M., Algaba, J. C., Brandner, W., Lestrade, J., Jauncey, D. L., Jones, D. L., Preston, R. A., & Reynolds, J. E. (2006). On the dynamics of the AB Doradus system. aap, 446, 733-738.
• Park, R., Close, L. M., Siegler, N., Nielsen, E. L., & Stalcup, T. (2006). A Reflective Gaussian Coronagraph for Extreme Adaptive Optics: Laboratory Performance. pasp, 118, 1591-1603.
• Biller, B. A., Close, L. M., Li, A., Bieging, J. H., Hoffmann, W. F., Hinz, P. M., Miller, D., Brusa, G., Lloyd-Hart, M., Wildi, F., Potter, D., & Oppenheimer, B. D. (2005). High-Resolution Mid-Infrared Imaging of the Asymptotic Giant Branch Star RV Bootis with the Steward Observatory Adaptive Optics System. apj, 620, 450-458.
• Close, L. M., Lenzen, R., Guirado, J. C., Nielsen, E. L., Mamajek, E. E., Brandner, W., Hartung, M., Lidman, C., & Biller, B. (2005). A dynamical calibration of the mass-luminosity relation at very low stellar masses and young ages. nat, 433, 286-289.
• Kasper, M., Ageorges, N., Boccaletti, A., Brandner, W., Close, L. M., Davies, R., Finger, G., Genzel, R., Hartung, M., Kaufer, A., Kellner, S., Hubin, N., Lenzen, R., Lidman, C., Monnet, G., Moorwood, A., Ott, T., Riaud, P., R"oser, H., , Rouan, D., et al. (2005). New observing modes of NACO. The Messenger, 119, 9-13.
• Kasper, M., Ageorges, N., Boccaletti, A., Brandner, W., Close, L. M., Davies, R., Finger, G., Genzel, R., Hartung, M., Kaufer, A., Kellner, S., Hubin, N., Lenzen, R., Ludman, C., Monnet, G., Moorwood, A., Ott, T., Riaud, P., Roser, H., , Rouan, D., et al. (2005). New observing modes of NACO. The Messenger, 119, 11.
• Nielsen, E. L., Close, L. M., Guirado, J. C., Biller, B. A., Lenzen, R., Brandner, W., Hartung, M., & Lidman, C. (2005). AB Doradus C: age, spectral type, orbit, and comparison to evolutionary models. Astronomische Nachrichten, 326, 1033-1039.
• Siegler, N., Close, L. M., Cruz, K. L., Mart'in, E. L., & Reid, I. N. (2005). Discovery of Two Very Low Mass Binaries: Final Results of an Adaptive Optics Survey of Nearby M6.0-M7.5 Stars. apj, 621, 1023-1032.
• Bouy, H., Duch^ene, G., K"ohler, R., Brandner, W., Bouvier, J., Mart'in, E. L., Ghez, A., Delfosse, X., Forveille, T., Allard, F., Baraffe, I., Basri, G., Close, L., & McCabe, C. E. (2004). First determination of the dynamical mass of a binary L dwarf. aap, 423, 341-352.
• Hartung, M., Herbst, T. M., Close, L. M., Lenzen, R., Brandner, W., Marco, O., & Lidman, C. (2004). A new VLT surface map of Titan at 1.575 microns. aap, 421, L17-L20.
• McCaughrean, M. J., Close, L. M., Scholz, R., Lenzen, R., Biller, B., Brandner, W., Hartung, M., & Lodieu, N. (2004). $epsilon$ Indi Ba,Bb: The nearest binary brown dwarf. aap, 413, 1029-1036.
• Merline, W. J., Tamblyn, P. M., Dumas, C., Menard, F., Close, L. M., Chapman, C. R., Duvert, G., & Ageorges, N. (2004). S/2004 (4674) 1. iaucirc, 8297, 1.
• Tamblyn, P. M., Merline, W. J., Chapman, C. R., Nesvorny, D., Durda, D. D., Dumas, C., Storrs, A. D., Close, L. M., & Menard, F. (2004). S/2004 (17246) 1. iaucirc, 8293, 3.
• Beck, T. L., Simon, M., & Close, L. M. (2003). Near-Infrared Adaptive Optics Imaging of the Embedded Cluster NGC 2024. apj, 583, 358-367.
• Close, L. M., Biller, B., Hoffmann, W. F., Hinz, P. M., Bieging, J. H., Wildi, F., Lloyd-Hart, M., Brusa, G., Fisher, D., Miller, D., & Angel, R. (2003). Mid-Infrared Imaging of the Post-Asymptotic Giant Branch Star AC Herculis with the Multiple Mirror Telescope Adaptive Optics System. apjl, 598, L35-L38.
• Close, L. M., Siegler, N., Freed, M., & Biller, B. (2003). Detection of Nine M8.0-L0.5 Binaries: The Very Low Mass Binary Population and Its Implications for Brown Dwarf and Very Low Mass Star Formation. apj, 587, 407-422.
• Close, L. M., Wildi, F., Lloyd-Hart, M., Brusa, G., Fisher, D., Miller, D., Riccardi, A., Salinari, P., McCarthy, D. W., Angel, R., Allen, R., Martin, H. M., Sosa, R. G., Montoya, M., Rademacher, M., Rascon, M., Curley, D., Siegler, N., & Duschl, W. J. (2003). High-Resolution Images of Orbital Motion in the Trapezium Cluster: First Scientific Results from the Multiple Mirror Telescope Deformable Secondary Mirror Adaptive Optics System. apj, 599, 537-547.
• Freed, M., Close, L. M., & Siegler, N. (2003). Discovery of a Tight Brown Dwarf Companion to theLow-Mass Star LHS 2397a. apj, 584, 453-458.
• Merline, W. J., Close, L. M., Tamblyn, P. M., Menard, F., Chapman, C. R., Dumas, C., Duvert, G., Owen, W. M., Slater, D. C., & Sterzik, M. F. (2003). S/2003 (1509) 1. iaucirc, 8075, 2.
• Merline, W. J., Dumas, C., Siegler, N., Close, L. M., Chapman, C. R., Tamblyn, P. M., Terrell, D., Conrad, A., Menard, F., & Duvert, G. (2003). S/2003 (283) 1. Central Bureau Electronic Telegrams, 27, 1.
• Merline, W. J., Dumas, C., Siegler, N., Close, L. M., Chapman, C. R., Tamblyn, P. M., Terrell, D., Conrad, A., Menard, F., & Duvert, G. (2003). S/2003 (283) 1. iaucirc, 8165, 1.
• Merline, W. J., Tamblyn, P. M., Chapman, C. R., Nesvorny, D., Durda, D. D., Dumas, C., Storrs, A. D., Close, L. M., & Menard, F. (2003). S/2003 (22899) 1. iaucirc, 8232, 2.
• Merline, W. J., Tamblyn, P. M., Dumas, C., Close, L. M., Chapman, C. R., & Menard, F. (2003). S/2003 (130) 1. iaucirc, 8183, 1.
• Siegler, N., Close, L. M., Mamajek, E. E., & Freed, M. (2003). An Adaptive Optics Survey of M6.0-M7.5 Stars: Discovery of Three Very Low Mass Binary Systems Including Two Probable Hyades Members. apj, 598, 1265-1276.
• Close, L. M., Potter, D., Brandner, W., Lloyd-Hart, M., Liebert, J., Burrows, A., & Siegler, N. (2002). Discovery of a 0.15'' Binary Brown Dwarf, 2MASS J1426316+155701, with Gemini/Hokupa'a Adaptive Optics. apj, 566, 1095-1099.
• Close, L. M., Siegler, N., Potter, D., Brandner, W., & Liebert, J. (2002). An Adaptive Optics Survey of M8-M9 Stars: Discovery of Four Very Low Mass Binaries with at Least One System Containing a Brown Dwarf Companion. apjl, 567, L53-L57.
• Close, L. M., Siegler, N., Potter, D., Brandner, W., & Liebert, J. (2002). Erratum: ``An Adaptive Optics Survey of M8-M9 Stars: Discovery of Four Very Low Mass Binaries with at Least One System Containing a Brown Dwarf Companion'' (ApJ, 567, L53 [2002]). apjl, 571, L193-L193.
• Merline, W. J., Close, L. M., Siegler, N., Dumas, C., Chapman, C., Rigaut, F., Menard, F., Owen, W. M., & Slater, D. C. (2002). S/2002 (3749) 1. iaucirc, 7827, 2.
• Merline, W. J., Tamblyn, P. M., Dumas, C., Close, L. M., Chapman, C. R., Menard, F., Owen, W. M., Slater, D. C., & Pepin, J. (2002). S/2002 (121) 1. iaucirc, 7980, 2.
• Kenworthy, M., Hofmann, K., Close, L., Hinz, P., Mamajek, E., Schertl, D., Weigelt, G., Angel, R., Balega, Y. Y., Hinz, J., & Rieke, G. (2001). Gliese 569B: A Young Multiple Brown Dwarf System?. apjl, 554, L67-L70.
• Merline, W. J., Close, L. M., Siegler, N., Potter, D., Chapman, C. R., Dumas, C., Menard, F., Slater, D. C., Baker, A. C., Edmunds, M. G., Mathlin, G., Guyon, O., & Roth, K. (2001). S/2001 (617) 1. iaucirc, 7741, 2.
• Merline, W. J., Menard, F., Close, L., Dumas, C., Chapman, C. R., & Slater, D. C. (2001). S/2001 (22) 1. iaucirc, 7703, 2.
• Brandner, W., Sheppard, S., Zinnecker, H., Close, L., Iwamuro, F., Krabbe, A., Maihara, T., Motohara, K., Padgett, D. L., & Tokunaga, A. (2000). VLT-detection of two edge-on Circumstellar Disks in the rho Oph dark cloud. aap, 364, L13-L18.
• Currie, D., Bonaccini, D., Diolaiti, E., Tordo, S., Naesgarde, K., Liwing, J., Bendinelli, O., Parmeggiani, G., & Close, L. (2000). The ESO photometric and astrometric analysis programme for adaptive optics.. The Messenger, 100, 12-23.
• Diolaiti, E., Bendinelli, O., Bonaccini, D., Close, L., Currie, D., & Parmeggiani, G. (2000). Analysis of isoplanatic high resolution stellar fields by the StarFinder code. aaps, 147, 335-346.
• Diolaiti, E., Bendinelli, O., Bonaccini, D., Close, L., Currie, D., & Parmeggiani, G. (2000). StarFinder: a code to analyse isoplanatic high-resolution stellar fields.. The Messenger, 100, 23-27.
• McCaughrean, M. J., Stapelfeldt, K. R., & Close, L. M. (2000). High-Resolution Optical and Near-Infrared Imaging of Young Circumstellar Disks. Protostars and Planets IV, 485.
• McCaughrean, M., Stapelfeldt, K., & Close, L. (2000). High-Resolution Optical and Near-Infrared Imaging of Young Circumstellar Disks. NASA STI/Recon Technical Report N, 62312.
• Merline, W. J., Close, L. M., Shelton, J. C., Dumas, C., Menard, F., Chapman, C. R., Slater, D. C., & Keck II Telescope, W. M. (2000). Satellites of Minor Planets. iaucirc, 7503, 3.
• Potter, D. E., Close, L. M., Roddier, F., Roddier, C., Graves, J. E., & Northcott, M. (2000). A High-Resolution Polarimetry Map of the Circumbinary Disk around UY Aurigae. apj, 540, 422-428.
• Merline, W. J., Close, L. M., Dumas, C., Chapman, C. R., Roddier, F., Menard, F., Slater, D. C., Duvert, G., Shelton, C., & Morgan, T. (1999). Discovery of a moon orbiting the asteroid 45 Eugenia. nat, 401, 565.
• Merline, W. J., Close, L. M., Dumas, C., Chapman, C. R., Roddier, F., Menard, F., Slater, D. C., Duvert, G., Shelton, C., Morgan, T., & Dunham, D. W. (1999). S/1998 (45) 1. iaucirc, 7129, 1.
• Simon, M., Close, L. M., & Beck, T. L. (1999). Adaptive Optics Imaging of the Orion Trapezium Cluster. aj, 117, 1375-1386.
• Close, L. M., Dutrey, A., Roddier, F., Guilloteau, S., Roddier, C., Northcott, M., M'enard, F., Duvert, G., Graves, J. E., & Potter, D. (1998). Adaptive Optics Imaging of the Circumbinary Disk around the T Tauri Binary UY Aurigae: Estimates of the Binary Mass and Circumbinary Dust Grain Size Distribution. apj, 499, 883-888.
• Dumas, C., Close, L., Graves, B., Northcott, M., Roddier, F., Hainaut, O., & Connelley, M. (1998). Adaptive Optics Provides a Sharp Image of Io's Volcanoes. Bulletin d'information du telescope Canada-France-Hawaii, 38, 26-28.
• Stockton, A., Canalizo, G., & Close, L. M. (1998). PG 1700+518 Revisited: Adaptive-Optics Imaging and a Revised Starburst Age for the Companion. apjl, 500, L121-L127.
• Close, L. M., Roddier, F., Hora, J. L., Graves, J. E., Northcott, M., Roddier, C., Hoffman, W. F., Dayal, A., Fazio, G. G., & Deutsch, L. K. (1997). Adaptive Optics Infrared Imaging Polarimetry and Optical HST Imaging of Hubble's Variable Nebula (R Monocerotis/NGC 2261): A Close Look at a Very Young Active Herbig Ae/Be Star. apj, 489, 210-221.
• Close, L. M., Roddier, F., J.~Northcott, M., Roddier, C., & Elon Graves, J. (1997). Adaptive Optics 0.2'' Resolution Infrared Images of HL Tauri: Direct Images of an Active Accretion Disk around a Protostar. apj, 478, 766-777.
• Mutz, S. B., Windhorst, R. A., Wittman, D., Close, L. M., & McCarthy, D. W. (1997). High-Resolution V, I, and K-Band Imaging of Faint Field Galaxies from the HST Medium-Deep Survey. aj, 113, 1537.
• Close, L. (1996). The First Infrared Images of An Accretion Disk Around HL Tau. Bulletin d'information du telescope Canada-France-Hawaii, 35, 2-2.
• Haller, J. W., Rieke, M. J., Rieke, G. H., Tamblyn, P., Close, L., & Melia, F. (1996). Stellar Kinematics and the Black Hole in the Galactic Center. apj, 456, 194.
• Haller, J. W., Rieke, M. J., Rieke, G. H., Tamblyn, P., Close, L., & Melia, F. (1996). Stellar Kinematics and the Black Hole in the Galactic Center: Erratum. apj, 468, 955.
• Tamblyn, P., Rieke, G. H., Hanson, M. M., Close, L. M., McCarthy, D. W., & Rieke, M. J. (1996). The Peculiar Population of Hot Stars at the Galactic Center. apj, 456, 206.
• Close, L. M., Hall, P. B., Liu, C. T., & Hege, E. K. (1995). Spectroscopic and Morphological Evidence That IRAS FSC 10214+4724 Is a Gravitational Lens. apjl, 452, L9.
• Close, L. M., McCarthy, D. W., & Melia, F. (1995). Infrared photometry of the black hole candidate Sagittarius A*. apj, 439, 682-686.
• Hollywood, J. M., Melia, F., Close, L. M., McCarthy, D. W., & Dekeyser, T. A. (1995). General Relativistic Flux Modulations in the Galactic Center Black Hole Candidate Sagittarius A*. apjl, 448, L21.
• Close, L. M., & McCarthy, D. W. (1994). High-resolution imaging with a tip-tilt Cassegrain secondary. pasp, 106, 77-86.
• Close, L. M., Richer, H. B., & Crabtree, D. R. (1990). A complete sample of wide binaries in the solar neighborhood. aj, 100, 1968-1980.

Proceedings Publications

• Balmer, W., Follette, K., Males, J., Close, L., Morzinski, K., & Weinberger, A. (2021, jan). Drums in the Deep: constraining the orbit and photometric variability of the chasm-carving M-dwarf HD 142527B. In American Astronomical Society Meeting Abstracts, 53.
• Follette, K., Close, L., Males, J., Adams, J., Treiber, H., & Balmer, W. (2021, jun). The Giant Accreting Protoplanet Survey (GAPlanetS) \textemdash Final Results and Next Steps. In American Astronomical Society Meeting Abstracts, 53.
• Haffert, S. Y., Males, J. R., Close, L., Long, J., Schatz, L., Gorkom, K., Hedglen, A., Lumbres, J., Rodack, A., Guyon, O., Knight, J., Kautz, M., & Pearce, L. (2021, sep). Data-driven subspace predictive control: lab demonstration and future outlook. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 11823.
• Wagner, K., Ertel, S., Stone, J., Leisenring, J., Apai, D., Kasper, M., Absil, O., Close, L., Defr{\`ere}, D., Guyon, O., & Males, J. (2021, sep). Imaging low-mass planets within the habitable zones of nearby stars with ground-based mid-infrared imaging. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 11823.
• Close}, L. M., Males, J., Long, J. D., Van, G. K., Hedglen, A. D., Kautz, M., Lumbres, J., Haffert, S. Y., Follette, K., Wagner, K., Miller, K., Apai, D., Wu, Y., Guyon, O., Schatz, L., Rodack, A., Doelman, D., Snik, F., Knight, J. M., , Morzinski, K., et al. (2020, dec). Prediction of the planet yield of the MaxProtoPlanetS high-contrast survey for H-alpha protoplanets with MagAO-X based on first light contrasts. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 11448.
• Haffert, S. Y., Harris, R. J., Zanutta, A., Pike, F. A., Bianco, A., Redaelli, E., Beno{\~A\textregisteredt}, A., MacLachlan, D. G., Ross, C. A., Gris-S{\'anchez}, I., Trappen, M. D., Xu, Y., Blaicher, M., Maier, P., Riva, G., Sinquin, B., Kulcs{\'ar}, C., Bharmal, N. A., Gendron, E., , Staykov, L., et al. (2020, dec). Multi-core fibre-fed integral-field unit (MCIFU): overview and first-light. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 11448.
• Hedglen, A. D., Close, L. M., Bouchez, A. H., Males, J. R., Demers, R., Kautz, M., Basant, R., Parkinson, M., Gasho, V., Quir{\'os-Pacheco}, F., & Sitarski, B. N. (2020, dec). The Giant Magellan Telescope high contrast phasing testbed. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 11448.
• Males, J. R., Close, L. M., Guyon, O., Hedglen, A. D., Van, G. K., Long, J. D., Kautz, M., Lumbres, J., Schatz, L., Rodack, A., Miller, K., Doelman, D., Snik, F., Bos, S., Knight, J. M., Morzinski, K., Gasho, V., Keller, C., Haffert, S., & Pearce, L. (2020, dec). MagAO-X first light. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 11448.
• Marafatto, L., Bergomi, M., Biondi, F., Carolo, E., De, P. M., Greggio, D., Lessio, L., Mesa, D., Radhakrishnan, S., Umbriaco, G., Vassallo, D., Viotto, V., Bianco, A., Dima, M., D'Orazi, V., Grenz, P., Leisenring, J. M., Mohr, L., Montoya, M., , Zanutta, A., et al. (2020, dec). SHARK-NIR, toward the installation at the Large Binocular Telescope. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 11448.
• Close, L. M. (2019, June). Concept for the GMT High-Contrast Exoplanet Instrument GMagAO-X and the High-Contrast Phasing Testbed with MagAO-X. In Adaptive Optics for ELTs 6, 1, 13.
• Follette, K., Close, L., Males, J., & Morzinski, K. (2019, jan). The MagAO Giant Accreting Protoplanet Survey (GAPlanetS): Recent Results. In American Astronomical Society Meeting Abstracts \#233, 233.
• Guyon, O., Bottom, M., Chun, M., Close, L., Davis, K., Fitzgerald, M. P., Frazin, R., Hinz, P., Jensen-Clem, R., Jovanovic, N., Kawahara, H., Konopacky, Q., Lozi, J., Males, J., Marois, C., Mawet, D., Mazin, B., Narita, N., Ruane, G., , Sallum, S., et al. (2019, sep). A Technology Validation Program for near-IR Habitable Exoplanet Imaging with GMT and TMT. In \baas, 51.
• Lu, J., Fitzgerald, M., Dekany, R., Wright, S., Tuttle, S., Perrin, M., Froning, C., Lotz, J., Hunter, L., Close, L., Morzinski, K., McConnell, N., Max, C., Konopacky, Q., Bailey, V., Hamden, E., Kupke, R., Baranec, C., Hinz, P., , Chun, M., et al. (2019, sep). Training the Next Generation of OIR Instrumentalists. In \baas, 51.
• Males, J., Close, L. M., Guyon, O., Sitarski, B., Bouchez, A., Weinberger, A., & Fitzgerald, M. P. (2019, sep). GMagAO-X: extreme adaptive optics \& coronagraphy for GMT at first light. In \baas, 51.
• Sallum, S., Skemer, A., Eisner, J., Marel, N., Sheehan, P., Close, L., Ireland, M., Males, J., Morzinski, K., Bailey, V., Briguglio, R., & Puglisi, A. (2019, aug). New Spatially Resolved Observations of the SR 21 Transition Disk. In AAS/Division for Extreme Solar Systems Abstracts, 51.
• Close, L. M. (2018, aug). Adaptive Optics Systems VI. In Adaptive Optics Systems VI, 10703.
• Close, L., Males, J., Durney, O., Sauve, C., Kautz, M., Hedglen, A., Schatz, L., Lumbres, J., Miller, K., Van Gorkom, K., Jean, M., & Gasho, V. (2018, jul). Optical and mechanical design of the extreme AO coronagraphic instrument MagAO-X. In Adaptive Optics Systems VI, 10703.
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• Biller, B. A., Liu, M. C., Wahhaj, Z., Nielsen, E. L., Close, L. M., Dupuy, T., Hayward, T. L., Burrows, A., Chun, M., Ftaclas, C., Clarke, F., Hartung, M., Tecza, M., Thatte, N., & Team, N. C. (2010, oct). The Gemini NICI Planet-Finding Campaign: Discovery of a Close Substellar Companion to a Young Solar Analog. In In the Spirit of Lyot 2010, 22.
• Biller, B. A., Wahhaj, Z., Liu, M., Chun, M., Close, L., Ftaclas, C., Hartung, M., Hayward, T., Nielsen, E., Toomey, D., & Team, N. P. (2010, jan). The Gemini NICI Planet-Finding Campaign: Deep Imaging of Stars in the Solar Neighborhood. In American Astronomical Society Meeting Abstracts #215, 42, #449.03.
• Close, L. M., Gasho, V., Kopon, D., Males, J., Follette, K. B., Brutlag, K., Uomoto, A., & Hare, T. (2010, jul). The Magellan Telescope Adaptive Secondary AO System: a visible and mid-IR AO facility. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7736, 5.
• Follette, K. B., Close, L. M., Kopon, D., Males, J. R., Gasho, V., Brutlag, K. M., & Uomoto, A. (2010, jul). The first VisAO-fed integral field spectrograph: VisAO IFS. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7735, 1.
• Guirado, J. C., Mart'i-Vidal, I., Marcaide, J. M., Close, L. M., Lestrade, J., Jauncey, D. L., Jim'enez-Monferrer, S., Jones, D. L., Preston, R. A., & Reynolds, J. E. (2010). The AB Doradus System Revisited: The Dynamical Mass of AB Dor A. In Highlights of Spanish Astrophysics V, 139.
• Kopon, D., Close, L. M., Males, J., Gasho, V., & Follette, K. (2010, jul). The Magellan Adaptive Secondary VisAO Camera: diffraction-limited broadband visible imaging and 20mas fiber array IFU. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7736, 2.
• Liu, M. C., Wahhaj, Z., Biller, B. A., Nielsen, E. L., Chun, M., Close, L. M., Ftaclas, C., Hartung, M., Hayward, T. L., Clarke, F., Reid, I. N., Shkolnik, E. L., Tecza, M., Thatte, N., Alencar, S., Artymowicz, P., Boss, A., Burrows, A., Gouveia Dal Pino, E., , Gregorio-Hetem, J., et al. (2010, jul). The Gemini NICI Planet-Finding Campaign. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7736, 1.
• Liu, M. C., Wahhaj, Z., Biller, B., Chun, M., Close, L., Ftaclas, C., Hartung, M., Hayward, T., Nielsen, E., Toomey, D., Shkolnik, E., Reid, I., & Team, N. P. (2010, jan). The Gemini NICI Planet-Finding Campaign. In American Astronomical Society Meeting Abstracts #215, 42, #449.01.
• Males, J. R., Close, L. M., Kopon, D., Gasho, V., & Follette, K. (2010, jul). Frame selection techniques for the Magellan adaptive optics VisAO camera. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7736, 60.
• Nielsen, E. L., Close, L. M., Biller, B. A., Masciadri, E., & Lenzen, R. (2010, jan). Constraints on Extrasolar Planet Populations from VLT NACO/SDI and MMT SDI and Direct Adaptive Optics Imaging Surveys: Giant Planets are Rare at Large Separations. In EAS Publications Series, 41, 107-110.
• Nielsen, E. L., Close, L. M., Liu, M., & Biller, B. A. (2010, oct). A Uniform Analysis of 118 Stars with High-contrast Imaging: Long-period Extrasolar Giant Planets are Rare Around Sun-like Stars. In In the Spirit of Lyot 2010, 13.
• Nielsen, E., & Close, L. M. (2010, jan). On the Road to Imaging Extrasolar Planets: Null Results, Other Discoveries Along the Way, and Signposts for the Future. In American Astronomical Society Meeting Abstracts #215, 42, #377.05.
• Skemer, A. J., Hinz, P. M., Hoffmann, W. F., Close, L. M., Kendrew, S., Mathar, R. J., Stuik, R., Greene, T. P., Woodward, C. E., & Kelley, M. S. (2010). A Direct Measurement of Atmospheric Dispersion in N-band Spectra: Implications for Mid-IR Systems on ELTs. In Adaptative Optics for Extremely Large Telescopes, 5019.
• Wahhaj, Z., Liu, M. C., Biller, B. A., Chun, M. R., Close, L., Ftaclas, C., Hartung, M., Hayward, T., Neilson, E., Toomey, D., & Team, N. P. (2010, jan). The Gemini NICI Planet-Finding Campaign: A Direct Imaging Search for Planets around Beta Pictoris and TW Hydra. In American Astronomical Society Meeting Abstracts #215, 42, #449.02.
• Biller, B. A., Liu, M., Wahhaj, Z., Chun, M., Close, L., Ftaclas, C., Hartung, M., Hayward, T., Nielsen, E., & Toomey, D. (2009, may). Observing Strategies for the NICI Campaign to Directly Image Extrasolar Planets. In American Astronomical Society Meeting Abstracts #214, 214, #306.08.
• Biller, B., Artigau, '., Wahhaj, Z., Hartung, M., Liu, M. C., Close, L. M., Chun, M. R., Ftaclas, C., Toomey, D. W., & Hayward, T. (2009, feb). Observing Strategies for the NICI Campaign to Directly Image Extrasolar Planets. In 15th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, 1094, 425-428.
• Cardoso, C. V., McCaughrean, M. J., King, R. R., Close, L. M., Scholz, R., Lenzen, R., Brandner, W., Lodieu, N., & Zinnecker, H. (2009, feb). Dynamical masses for the nearest brown dwarf binary: $epsilon$ Indi Ba, Bb. In 15th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, 1094, 509-512.
• Close, L. M. (2009, may). Very Low Mass Stellar and Brown Dwarf Binaries Observed with Adaptive Optics. In American Astronomical Society Meeting Abstracts #214, 214, #211.05.
• Close, L. M., Gasho, V., Kopon, D., Males, J., Hinz, P., & Hare, T. (2009, may). The Magellan Telescope Deformable Secondary Adaptive Optics System. In American Astronomical Society Meeting Abstracts #214, 214, #409.18.
• Elias, J., Bershady, M., Blum, B., Cecil, G., Close, L., DePoy, D., Froning, C., Gehrz, B., Joyce, R., Martini, P., McLean, I., Packham, C., Persson, E., Pipher, J., Probst, R., Richter, M., Sprayberry, D., Strauss, M., Telesco, C., & Tokunaga, A. (2009). Developing Future Generations of Instrument Builders. In astro2010: The Astronomy and Astrophysics Decadal Survey, 2010, 12P.
• Kopon, D., Males, J., Close, L. M., & Gasho, V. (2009, aug). Enabling technologies for visible adaptive optics: the Magellan adaptive secondary VisAO camera. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7439, 0.
• Liu, M. C., Wahhaj, Z., Biller, B., Shkolnik, E., Chun, M., Ftaclas, C., Toomey, D., Close, L., Nielsen, E., Hayward, T., Hartung, M., & Artigau, E. (2009, feb). The Gemini NICI Planet-Finding Campaign. In 15th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, 1094, 461-464.
• Macintosh, B., Graham, J., Marley, M., Jang-Condell, H., Barman, T., Close, L., Hinz, P., Liu, M., Oppenheimer, B., & Stapelfeldt, K. (2009). Direct detection and spectroscopic characterizatoin of extrasolar planets. In astro2010: The Astronomy and Astrophysics Decadal Survey, 2010, 188.
• Males, J., Close, L. M., Skemer, A. J., Hinz, P. M., Hoffmann, W. F., Marengo, M., & Greene, T. P. (2009, may). Diffraction Limited Narrowband Mid-IR Imaging Of The Carbon Rich AGB Star IRC +10216 At The MMT. In American Astronomical Society Meeting Abstracts #214, 214, #428.09.
• Nielsen, E., & Close, L. M. (2009, may). A Uniform Analysis of 118 Sun-like Stars with High-Contrast Adaptive Optics Imaging: Long Period Giant Planets are Rare. In American Astronomical Society Meeting Abstracts #214, 214, #230.04.
• Skemer, A., Close, L., Hinz, P., & Hoffmann, W. (2009, may). A Direct Measurement of Atmospheric Refraction in N-band AO Spectra: Implications for Mid-IR Systems on ELTs. In American Astronomical Society Meeting Abstracts #214, 214, #409.19.
• Skemer, A., Close, L., Hinz, P., Hoffmann, W., Males, J., & Greene, T. (2009, may). The First Spatially Resolved Mid-IR Spectra of Binaries with Adaptive Optics. In American Astronomical Society Meeting Abstracts #214, 214, #230.05.
• Wahhaj, Z., Liu, M., Biller, B., Chun, M., Close, L., Ftaclas, C., Hartung, M., Hayward, T., Nielsen, E., & Toomey, D. (2009, may). Direct Planet Imaging with NICI: Combining Angular and Spectral Difference Imaging. In American Astronomical Society Meeting Abstracts #214, 214, #300.04.
• Artigau, '., Biller, B. A., Wahhaj, Z., Hartung, M., Hayward, T. L., Close, L. M., Chun, M. R., Liu, M. C., Trancho, G., Rigaut, F., Toomey, D. W., & Ftaclas, C. (2008, jul). NICI: combining coronagraphy, ADI, and SDI. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7014, 1.
• Biller, B., Artigau, '., Wahhaj, Z., Hartung, M., Liu, M. C., Close, L. M., Chun, M. R., Ftaclas, C., Toomey, D. W., & Hayward, T. (2008, jul). Observing strategies for the NICI campaign to directly image extrasolar planets. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7015, 6.
• Chun, M., Toomey, D., Wahhaj, Z., Biller, B., Artigau, E., Hayward, T., Liu, M., Close, L., Hartung, M., Rigaut, F., & Ftaclas, C. (2008, jul). Performance of the near-infrared coronagraphic imager on Gemini-South. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7015, 1.
• Close, L. M., Gasho, V., Kopon, D., Hinz, P. M., Hoffmann, W. F., Uomoto, A., & Hare, T. (2008, jul). The Magellan Telescope adaptive secondary AO system. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7015, 0.
• Kopon, D., Close, L. M., & Gasho, V. (2008, jul). An advanced atmospheric dispersion corrector for extreme AO. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7015, 6.
• Peters, M. A., Close, L. M., Stalcup, T., Rademacher, M., Swartzlander, G. A., Ford, E. L., & Abdul-Malik, R. S. (2008, jul). A high-Strehl low-resolution optical imager (BESSEL): a measurement of the inner scale of turbulence. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 7015, 6.
• Biller, B. A., Close, L., Nielsen, E., Masciadri, E., Lenzen, R., Brandner, W., McCarthy, D., Henning, T., Hartung, M., Stapelfeldt, K., & Trauger, J. (2007, jun). An Imaging Survey for Extrasolar Planets around 54 Close, Young Stars with SDI at the VLT and MMT. In In the Spirit of Bernard Lyot: The Direct Detection of Planets and Circumstellar Disks in the 21st Century, 30.
• Close, L. (2007, jun). Detection of Planetary Mass Objects with Laser Guide Star Adaptive Optics. In In the Spirit of Bernard Lyot: The Direct Detection of Planets and Circumstellar Disks in the 21st Century, 31.
• Close, L. (2007, jun). Extrasolar Planet Imaging with the Giant Magellan Telescope. In In the Spirit of Bernard Lyot: The Direct Detection of Planets and Circumstellar Disks in the 21st Century, 38.
• Janson, M., Brandner, W., Henning, T., & Close, L. (2007, dec). Differential Imaging Search for the Giant Planet Epsilon Eri b with ESO-VLT. In American Astronomical Society Meeting Abstracts, 39, #134.03.
• Merline, W. J., Tamblyn, P. M., Dumas, C., Close, L. M., Chapman, C. R., Durda, D. D., Levison, H. F., Hamilton, D. P., Nesvorny, D., Storrs, A., Enke, B., & Menard, F. (2007, oct). The Search for Trojan Binaries. In AAS/Division for Planetary Sciences Meeting Abstracts #39, 39, 538.
• Peters, M. A., Close, L. M., Swartzlander, G. A., Ford, E., Abdul-Malik, R. S., Rademacher, M., & Stalcup, T. (2007, jun). BESSEL: A High Strehl Visible Telescopic Test Bed for Planet Finding Coronagraphs. In In the Spirit of Bernard Lyot: The Direct Detection of Planets and Circumstellar Disks in the 21st Century, 29.
• Skemer, A., & Close, L. (2007, jun). The First Resolution of the 0.1 arc sec Binary T Tau Sa and Sb at 10 micron with MMT Mid-IR AO and Super-Resolution. In In the Spirit of Bernard Lyot: The Direct Detection of Planets and Circumstellar Disks in the 21st Century, 47.
• Swartzlander, G. A., Ford, E. L., Abdul-Malik, R., Kim, J., Close, L., Peters, M. A., Palacios, D., & Wilson, D. (2007, sep). Advancements of the optical vortex coronagraph. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 6693, 11.
• Swartzlander, G., Close, L., Ford, E., Abdul-Malik, R., Kim, J., & Peters, M. A. (2007, jun). Optical Vortex Coronagraph. In In the Spirit of Bernard Lyot: The Direct Detection of Planets and Circumstellar Disks in the 21st Century, 25.
• Angel, R., Codona, J. L., Hinz, P., & Close, L. (2006, jun). Exoplanet imaging with the Giant Magellan Telescope. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 6267, 2.
• Biller, B. A., Close, L. M., Lenzen, R., Brandner, W., McCarthy, D., Nielsen, E., Kellner, S., & Hartung, M. (2006). Suppressing Speckle Noise for Simultaneous Differential Extrasolar Planet Imaging (SDI) at the VLT and MMT. In IAU Colloq. 200: Direct Imaging of Exoplanets: Science amp Techniques, 571-576.
• Biller, B. A., Close, L. M., Masciadri, E., Lenzen, R., Brandner, W., McCarthy, D., Henning, T., Nielsen, E. L., Hartung, M., Kellner, S., Geissler, K., & Kasper, M. (2006, jun). Contrast limits with the Simultaneous Differential Extrasolar Planet Imager (SDI) at the VLT and MMT. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 6272, 2.
• Biller, B. A., Close, L. M., Masciadri, E., Lenzen, R., Brandner, W., McCarthy, D., Henning, T., Nielsen, E., & Hartung, M. (2006). A Survey of Close, Young Stars with SDI at the VLT and MMT. In IAU Colloq. 200: Direct Imaging of Exoplanets: Science amp Techniques, 53-60.
• Biller, B. A., Close, L., Masciadri, E., Lenzen, R., Brandner, W., McCarthy, D., Henning, T., Nielsen, E., & Hartung, M. (2006, dec). A Survey of Close, Young Stars with SDI at the VLT and MMT. In American Astronomical Society Meeting Abstracts, 38, #179.05.
• Close, L. M., Nielsen, E. L., Guirado, J. C., Biller, B. A., Lenzen, R., Brandner, W., Hartung, M., & Lidman, C. (2006). On the Age, Spectral Type, Orbit, and Comparison to Evolutionary Models of AB Dor C. In IAU Colloq. 200: Direct Imaging of Exoplanets: Science amp Techniques, 11-18.
• Hartung, M., Coustenis, A., Dumas, C., Hirtzig, M., Herbst, T., Gendron, E., Close, L., Lenzen, R., Combes, M., & Drossart, P. (2006). Studying Small Solar System Objects with Adaptive Optics in the Context of Space Missions. In Visions for Infrared Astronomy, Instrumentation, Mesure, M'etrologie, 173-179.
• Kasper, M., Apai, D., Brandner, W., Close, L. M., & Geissler, K. (2006). L-band search for substellar companions in the Tucana and $beta$ Pictoris moving groups. In IAU Colloq. 200: Direct Imaging of Exoplanets: Science amp Techniques, 175-180.
• Masciadri, E., Geissler, K., Kellner, S., Brandner, W., Henning, T., Mundt, R., Close, L., Biller, B., & Raga, A. (2006). Ground-based direct imaging of extra-solar planets supported by AO. In IAU Colloq. 200: Direct Imaging of Exoplanets: Science amp Techniques, 501-506.
• Nielsen, E. L., Close, L. M., & Biller, B. A. (2006). Simulating Extrasolar Planet Populations for Direct Imaging Surveys. In IAU Colloq. 200: Direct Imaging of Exoplanets: Science amp Techniques, 111-118.
• Park, R., Close, L. M., Siegler, N., Nielsen, E. L., & Stalcup, T. (2006, jun). A reflective Gaussian coronagraph for ExAO: laboratory performance. In Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series, 6272, 4.
• Biller, B., Close, L., Lenzen, R., Brandner, W., McCarthy, D., Masciadri, E., Henning, T., Nielsen, E., & Hartung, M. (2005). A Survey of the Closest, Youngest Stars with the Simultaneous Differential Extrasolar Planet Imager (SDI) at the VLT and MMT. In Protostars and Planets V Posters, 8429.
• Close, L. M., Biller, B., Hoffmann, W. F., Hinz, P. M., Bieging, J. H., Wildi, F., Lloyd-Hart, M., Brusa, G., Fisher, D., Miller, D., & Angel, R. (2005, jan). Adaptive Optics Science with the MMT Adaptive Secondary: Mid-IR AO Imaging of the Post-AGB Star AC Her. In Science with Adaptive Optics, 253.
• Close, L. M., Guirado, J., Nielsen, E., Biller, B., Brandner, W., Lenzen, R., Hartung, M., & Lidman, C. (2005). AB Dor C: The First Dynamical Calibration of the Mass-Luminosity-Age Relation at Very Low Masses and Young Ages. In Protostars and Planets V Posters, 8081.
• Close, L. M., Lenzen, R., Biller, B., Brandner, W., & Hartung, M. (2005). Selected Examples of Solar and Extra-Solar Planetary Science with AO. In Science with Adaptive Optics, 136.
• Lenzen, R., Close, L., Brandner, W., Hartung, M., & Biller, B. (2005). NACO-SDI: A Novel Simultaneous Differential Imager for the Direct Imaging of Giant Extra-Solar Planets. In Science with Adaptive Optics, 46.
• Masciadri, E., Brandner, W., Kellner, S., Geissler, K., Mundt, R., Henning, T., Close, L., Biller, B., & Raga, A. (2005). Extra-Solar Planets Searches with Direct Imaging from the Ground. In Protostars and Planets V Posters, 8028.
• Merline, W. J., Tamblyn, P. M., Nesvorny, D., Durda, D. D., Chapman, C. R., Dumas, C., Owen, W. M., Storrs, A. D., Close, L. M., & Menard, F. (2005, aug). Koronis binaries and the role of families in binary frequency. In AAS/Division for Planetary Sciences Meeting Abstracts #37, 37, 623.
• Nielsen, E. L., Close, L. M., & Biller, B. A. (2005). Simulating Extrasolar Planet Populations. In Protostars and Planets V Posters, 8517.
• Biller, B. A., Close, L. M., Potter, D., Bieging, J. H., Hoffmann, W., Hinz, P., & Oppenheimer, B. D. (2004, jul). The First Adaptive Optics High Resolution Mid-IR Imaging of Evolved Stars: Case Studies of RV Boo and AC Her. In Asymmetrical Planetary Nebulae III: Winds, Structure and the Thunderbird, 313, 82.
• Biller, B. A., Close, L., Lenzen, R., Brandner, W., McCarthy, D. W., Nielsen, E., & Hartung, M. (2004, oct). Suppressing speckle noise for simultaneous differential extrasolar planet imaging (SDI) at the VLT and MMT. In Advancements in Adaptive Optics, 5490, 389-397.
• Graham, M. C., Potter, D. E., & Close, L. (2004, sep). PEPPER: a photometer designed for the direct detection of extrasolar planets. In Ground-based Instrumentation for Astronomy, 5492, 545-552.
• Lenzen, R., Close, L., Brandner, W., Biller, B., & Hartung, M. (2004, sep). A novel simultaneous differential imager for the direct imaging of giant planets. In Ground-based Instrumentation for Astronomy, 5492, 970-977.
• Merline, W. J., Tamblyn, P. M., Nesvorny, D., Durda, D. D., Chapman, C. R., Dumas, C., Storrs, A. D., Feldman, B., Owen, W. M., Close, L. M., & Menard, F. (2004, nov). Discovery of binaries among small asteroids in the Koronis dynamical family using the HST Advanced Camera for Surveys. In AAS/Division for Planetary Sciences Meeting Abstracts #36, 36, 1179.
• Close, L. M. (2003, feb). A Review of Published Adaptive Optics Science: A Bright Future for Adaptive Optics. In Discoveries and Research Prospects from 6- to 10-Meter-Class Telescopes II, 4834, 84-100.
• Close, L. M., Siegler, N., & Freed, M. (2003, jun). Detection of Nine M8.0--L0.5 Binaries: The Very Low Mass Binary Population and Its Implications for Brown Dwarf Formation Theories. In Brown Dwarfs, 211, 249.
• Close, L. M., Siegler, N., & Freed, M. E. (2003, feb). A Hokupa'a/Gemini Survey of the Lowest Mass/Faintest Guide Stars: The Very Low Mass Binary Population and its Implications for Brown Dwarf Formation Theories. In Adaptive Optical System Technologies II, 4839, 1055-1064.
• Freed, M. E., Close, L. M., McCarthy, D. W., & Rademacher, M. J. (2003, feb). MEDI: An Instrument for Direct-Detection of Massive Extrasolar Planets. In Adaptive Optical System Technologies II, 4839, 1132-1141.
• Freed, M., Close, L. M., & Siegler, N. (2003, jun). Discovery of a Tight Brown Dwarf Companion to the Low Mass Star LHS 2397a. In Brown Dwarfs, 211, 261.
• Freed, M., Close, L. M., McCarthy, D. W., & Rademacher, M. (2003). MEDI: An Instrument for Direct Detection of Massive Extrasolar Planets. In Scientific Frontiers in Research on Extrasolar Planets, 294, 99-102.
• Merline, W. J., Close, L. M., Dumas, C., Chapman, C. R., Menard, F., Tamblyn, P. M., & Durda, D. D. (2003, may). Discovery of new asteroid binaries (121) Hermione and (1509) Esclangona. In AAS/Division for Planetary Sciences Meeting Abstracts #35, 35, 972.
• Siegler, N., Close, L. M., & Freed, M. E. (2003, feb). Guiding on the Edge (V~19): Results from an AO Survey of Very Low Mass Stars Searching for Extremely Faint Companions. In Adaptive Optical System Technologies II, 4839, 114-120.
• Siegler, N., Close, L. M., Mamajek, E. E., & Freed, M. (2003, jun). Discovery of Three Very Low Mass Binary Systems: An Adaptive Optics Survey of M6.0--M7.5 Stars. In Brown Dwarfs, 211, 257.
• Wildi, F. P., Brusa, G., Lloyd-Hart, M., Close, L. M., & Riccardi, A. (2003, dec). First light of the 6.5-m MMT adaptive optics system. In Astronomical Adaptive Optics Systems and Applications, 5169, 17-25.
• Wildi, F. P., Brusa, G., Riccardi, A., Lloyd-Hart, M., Martin, H. M., & Close, L. M. (2003, feb). Towards 1$^st$ light of the 6.5m MMT adaptive optics system with deformable secondary mirror. In Adaptive Optical System Technologies II, 4839, 155-163.
• Hinkle, K., Joyce, R., Ridgway, S., Close, L., Lebzelter, T., Hron, J., & Andre, K. (2002). Imaging Ejecta from the Final Flash Star V605 Aql. In Exotic Stars as Challenges to Evolution, 279, 187.
• Merline, W. J., Close, L. M., Siegler, N., Dumas, C., Chapman, C. R., Rigaut, F., Menard, F., Owen, W. M., Slater, D. C., & Durda, D. D. (2002, sep). Discovery of a Loosely-bound Companion to Main-belt Asteroid (3749) Balam. In AAS/Division for Planetary Sciences Meeting Abstracts #34, 34, 835.
• Close, L. M. (2001). Adaptive Optics Imaging of Faint Companions: Current amp Future Prospects. In The Formation of Binary Stars, 200, 555.
• Eisl"offel, J., Simon, T., Close, L., & Bouvier, J. (2001). Binarity in the Young Open Cluster $alpha$ Persei (CD-ROM Directory: contribs/eisloff). In 11th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun, 223, 1404.
• Hinkle, K. H., Joyce, R. R., Ridgway, S. T., Close, L., Lebzelter, T., Hron, J., Andre, K., & Sperl, M. (2001, dec). Imaging the Ejecta from the Final Flash Star V605 Aql. In American Astronomical Society Meeting Abstracts, 33, #135.11.
• Merline, W. J., Close, L. M., Menard, F., Dumas, C., Chapman, C. R., & Slater, D. C. (2001, nov). Search for Asteroid Satellites. In AAS/Division for Planetary Sciences Meeting Abstracts #33, 33, 1133.
• Potter, D., Baudoz, P., Guyon, O., Brandner, W., Close, L., Graves, J. E., & Northcott, M. (2001, may). A High Dynamic Range Dual Imaging Polarimetric Survey of Circumstellar Disks around Young Stars using Gemini North with Hokupa`a. In American Astronomical Society Meeting Abstracts #198, 33, 812.
• Baudoz, P., Roddier, F., Roddier, C., Guyon, O., Potter, D., Brandner, W., Gay, J., Rabbia, Y., & Close, L. (2000, dec). Substellar mass companion search with adaptive optics at University of Hawaii. In American Astronomical Society Meeting Abstracts, 32, 1491.
• Close, L. M. (2000, jul). Review of published galactic and solar system science: a bright future for adaptive optics science. In Adaptive Optical Systems Technology, 4007, 758-772.
• Close, L. M., Merline, W. J., Dumas, C., Chapman, C. R., Roddier, F. J., Menard, F., Slater, D. C., Duvert, G., Shelton, J. C., & Morgan, T. H. (2000, jul). Search for asteroidal satellites using adaptive optics. In Adaptive Optical Systems Technology, 4007, 796-802.
• Close, L. M., Merline, W. J., Tholen, D. J., Owen, T. C., Roddier, F. J., & Dumas, C. (2000, jul). Adaptive optics imaging of Pluto-Charon and the discovery of a moon around the Asteroid 45 Eugenia: the potential of adaptive optics in planetary astronomy. In Adaptive Optical Systems Technology, 4007, 787-795.
• Close, L., Potter, D., & Tokunaga, A. (2000). Adaptive Optics Imaging of Faint Companions: Test Case of MWC480. In From Extrasolar Planets to Cosmology: The VLT Opening Symposium, 518.
• Currie, D. G., Bonaccini, D., Diolaiti, E., Tordo, S., Naesgarde, K., Liwing, J., Bendinelli, O., Parmeggiani, G., & Close, L. M. (2000, jul). ESO photometric and astrometric analysis program for AO: a programmatic and numerical analysis. In Adaptive Optical Systems Technology, 4007, 866-878.
• Currie, D., Tordo, S., Naesgarde, K., Liwing, J., Close, L., Bonaccini, D., Diolaiti, E., Bendinelli, O., & Parmeggiani, G. (2000). ESO Photometric and Astrometric Analysis Program for Adaptive Optics 381. In Astronomical Data Analysis Software and Systems IX, 216, 381.
• Diolaiti, E., Bendinelli, O., Bonaccini, D., Close, L. M., Currie, D. G., & Parmeggiani, G. (2000, jul). StarFinder: an IDL GUI-based code to analyze crowded fields with isoplanatic correcting PSF fitting. In Adaptive Optical Systems Technology, 4007, 879-888.
• Diolaiti, E., Bendinelli, O., Bonaccini, D., Close, L., Currie, D., & Parmeggiani, G. (2000). Starfinder: a Code for Crowded Stellar Fields Analysis. In Astronomical Data Analysis Software and Systems IX, 216, 623.
• Donaldson, R., Bonaccini, D., Brynnel, J., Buzzoni, B., Close, L. M., Delabre, B., DuPuy, C., Farinato, J., Fedrigo, E., Hubin, N. N., Marchetti, E., Stroebele, S., & Tordo, S. (2000, jul). MACAO and its application for the VLT interferometer. In Adaptive Optical Systems Technology, 4007, 82-93.
• Merline, W. J., Close, L. M., Dumas, C., Shelton, J. C., Menard, F., Chapman, C. R., & Slater, D. C. (2000, oct). Discovery of Companions to Asteroids 762 Pulcova and 90 Antiope by Direct Imaging. In AAS/Division for Planetary Sciences Meeting Abstracts #32, 32, 1017.
• Potter, D., Baudoz, P., Brandner, W., Close, L., Graves, B., Guyon, O., & Northcott, M. (2000, dec). Gemini/Hokupa`a Adaptive Optics Observations of Circumstellar Disks. In American Astronomical Society Meeting Abstracts, 32, 1565.
• Brandner, W., Close, L., Graves, B., Northcott, M., Potter, D., Roddier, C., Roddier, F., Tokunaga, A., Dekany, R., Troy, M., Brandl, B., Hayward, T., Bloemhof, E. E., Gaidos, E., & Oppenheimer, B. R. (1999, dec). Adaptive Optics Imaging and Spectroscopy of MWC 1080. In American Astronomical Society Meeting Abstracts, 31, 1368.
• Close, L. M., Merline, W. J., Tholen, D., Owen, T., Roddier, F., & Dumas, C. (1999, dec). Adaptive Optics Imaging of Pluto-Charon and the Discovery of a Moon aroun d the Asteroid 45 Eugenia: The Potential of Adaptive Optics in Planetary Astrono my. In AAS/Division for Planetary Sciences Meeting Abstracts #31, 31, 1585.
• Close, L. M., Roddier, F., Potter, D., Roddier, C., Graves, J. E., & Northcott, M. (1999). Astronomy with Adaptive Optics: Experiences from the University of Hawaii AO Program. In European Southern Observatory Conference and Workshop Proceedings, 56, 109.
• Duch^ene, G., Bouvier, J., Simon, T., Close, L., & Eisl"offel, J. (1999). Low-Mass Binaries in Young Stellar Clusters: A Deep Near-Infrared Adaptive Optics Survey. In European Southern Observatory Conference and Workshop Proceedings, 56, 185.
• Merline, W. J., Close, L. M., Dumas, C., Chapman, C. R., Roddier, F., M'enard, F., Colwell, W. B., Slater, D. C., Duvert, G., Shelton, C., & Morgan, T. H. (1999, sep). Discovery of asteroidal satellite S/1998 (45) 1.. In Bulletin of the American Astronomical Society, 31, 1106.
• Merline, W. J., Close, L. M., Dumas, C., Chapman, C. R., Roddier, F., Menard, F., Colwell, W., Slater, D. C., Duvert, G., Shelton, C., & Morgan, T. (1999, sep). Discovery of Asteroidal Satellite S/1998 (45) 1. In AAS/Division for Planetary Sciences Meeting Abstracts #31, 31, #20.06.
• Potter, D. E., Close, L. M., Roddier, F., Roddier, C., Graves, J. E., & Northcott, M. (1999). Adaptive Optics J Band Imaging Polarimetry Observations of the Circumbinary Disk Around UY Aurigae. In European Southern Observatory Conference and Workshop Proceedings, 56, 353.
• Potter, D. E., Tokunaga, A. T., Close, L. M., Graves, J. E., Northcott, M. J., Roddier, F., Roddier, C., & Kobayashi, N. (1999, dec). An Adaptive Optics search for Low Mass Companions in the Ursa Major Stream. In American Astronomical Society Meeting Abstracts, 31, #109.05.
• Roddier, C., Roddier, F., Graves, J. E., Northcott, M. J., Close, L., Surace, J., & Veran, J. P. (1999). Four-Year Observations of T Tauri With Adaptive Optics. In European Southern Observatory Conference and Workshop Proceedings, 56, 389.
• Roddier, F., Roddier, C., Close, L., Dumas, C., Graves, J. E., Guyon, O., Han, B., Northcott, M. J., Owen, T., Tholen, D., & Brahic, A. (1999). Planetary Science with Adaptive Optics: Results from the UH AO Systems. In European Southern Observatory Conference and Workshop Proceedings, 56, 401.
• Close, L. M., Roddier, F. J., Roddier, C. A., Graves, J. E., Northcott, M. J., & Potter, D. (1998, sep). Scientific results from the University of Hawaii: adaptive problems well suited to AO techniques. In Adaptive Optical System Technologies, 3353, 406-416.
• Graves, J. E., Northcott, M. J., Roddier, F. J., Roddier, C. A., & Close, L. M. (1998, sep). First light for Hokupa'a: 36-element curvature AO system at UH. In Adaptive Optical System Technologies, 3353, 34-43.
• Schmutz, W., Vacca, W. D., Close, L., Rayner, J., Geballe, T. R., Schild, H., & Walder, R. (1998, jul). HST NICMOS Observations of Circumstellar Matter Around CYG X-3. In NICMOS and the VLT: A New Era of High Resolution Near Infrared Imaging and Spectroscopy, 55, 123.
• Potter, D. E., Close, L., & Roddier, F. (1997, dec). A Model of Scattering from Dust in Proto-planetary Disks applied to O.1'' resolution U. of Hawaii Adaptive Optics Images of the Disk around Young Stars. In American Astronomical Society Meeting Abstracts, 29, 1213.
• Close, L. M., McCarthy, D. W., Brusa, G., Lloyd-Hart, M., Angel, J. R., Gray, P., McLeod, B. A., Groesbeck, T. D., Wittman, D. M., Ryan, P. T., Martinez, T., Hughes, J. M., Cheselka, M., Jacobsen, B., Bruns, D. G., & Sandler, D. G. (1996). An introduction to FASTTRAC II and the latest results from FASTTRAC I: 0.2'' imaging of the galactic center. In European Southern Observatory Conference and Workshop Proceedings, 54, 291.
• Close, L. M., Brusa, G., Bruns, D. G., Lloyd-Hart, M., & McCarthy, D. W. (1995, aug). Adaptive beam-combining mirror for the MMT. In Adaptive Optical Systems and Applications, 2534, 105-115.
• Gray, P. M., Lloyd-Hart, M., Angel, J. R., McCarthy, D. W., Sandler, D. G., Martinez, T., Close, L. M., Brusa, G., Bruns, D. G., McLeod, B. A., Ryan, P. T., Groesbeck, T. D., Wittman, D. M., Jacobsen, B. P., Hughes, J. M., Hunten, M. R., & Cheselka, M. (1995, aug). FASTTRAC II near-IR adaptive optics system for the Multiple Mirror Telescope: description and preliminary results. In Adaptive Optical Systems and Applications, 2534, 2-16.
• Hall, P. B., Close, L. M., Liu, C. T., & Hege, E. K. (1995, jun). Observations of the Gravitational Lens System IRAS FSC 10214+4724. In American Astronomical Society Meeting Abstracts #186, 27, 1212.
• Close, L. M., Wittman, D. M., & McCarthy, D. W. (1994, may). High-resolution infrared imaging utilizing a tip-tilt secondary mirror. In Adaptive Optics in Astronomy, 2201, 447-457.
• Close, L. M., Wittman, D., McCarthy, D. W., & Rieke, M. (1994, dec). FASTTRAC I: A High Resolution Infrared Tip-Tilt Imager. In American Astronomical Society Meeting Abstracts, 26, 1373.
• Mutz, S. B., Windhorst, R. A., Ostrander, E. J., Wittman, D., Close, L., McCarthy, D., Griffiths, R. E., & Neuschaefer, L. W. (1994, dec). The HST Medium Deep Survey: Steward BVRIJK and FASTTRAK JHK imaging and photometry of faint field galaxies from parallel WF/PC images. In American Astronomical Society Meeting Abstracts, 26, 1404.
• Close, L. M., & McCarthy, D. W. (1993, aug). Infrared imaging using a tip-tilt secondary mirror. In Active and Adaptive Optical Components and Systems II, 1920, 353-363.
• Close, L. M., McCarthy, D. W., Christou, J. C., & Melia, F. (1992, dec). What Color is Black? Multi-Band Photometry at the location of the Black Hole Candidate SGR A*. In American Astronomical Society Meeting Abstracts, 24, 1178.
• McCarthy, D. W., & Close, L. M. (1992, dec). Infrared Imaging Using a Prototype Adaptive Secondary Mirror for Rapid Tip-Tilt Correction. In American Astronomical Society Meeting Abstracts, 24, 1240.
• McCarthy, D., Close, L., McLeod, B., & Rieke, M. (1992). Infrared imaging using a tip/tilt secondary mirror.. In Adaptive Optics for Large Telescopes Topical Meeting, 118-119.

Others

• Zhou, Y., Bae, J., Bowler, B., Close, L., Follette, K. B., Kraus, A. L., Long, F., Sanghi, A., Ward-Duong, K., Wu, Y., & Zhu, Z. (2021). A Search for Accreting Protoplanets within Transition Disk Gaps.
• Males, J. R., Close, L. M., Guyon, O., Morzinski, K. M., Males, J. R., Close, L. M., Guyon, O., & Morzinski, K. M. (2017, May). MagAO-X Preliminary Design. Preliminary Design Review.
  More info

  Preliminary Design document, describing the entire MagAO-X instrument. Includes opto-mechanical design, component specifications, algorithm design, performance predictions, shipping and handling, and operational plans. 263 total pages.
• Close, L. (2013). A Diffraction-limited Survey for Direct Detection of Halpha Emitting/Accreting ExtraSolar Planets with the 6.5m Magellan Telescope and the MagAO Visible AO system.
• Biller, B., Radigan, J., Liu, M., Wahhaj, Z., Nielsen, E., Hayward, T., Close, L., & Skemer, A. (2012). Weather on Planets: A Search for Photometric Variability in the Young Exoplanets HR 8799bc.
• Allen, P., Allen, P., Close, L., & Close, L. (2010). A Multi-Epoch Survey for Faint, Close, Low-Mass Tertiaries to Nearby Spectroscopic Binaries: The Second Epoch.
• Allen, P., Allen, P., Close, L., & Close, L. (2009). A Survey for Faint, Close, Low-Mass Tertiaries to Nearby Spectroscopic Binaries.
• Close, L., Apai, D., Pascucci, I., & Skemer, A. (2009). The First Thermal Images of the Planetary Mass Prototype Object 2M1207b: Does it have an Edge-On Disk?.
• Skemer, A., Close, L., Greene, T., Hinz, P., & Beck, T. (2009). Resolved Silicate Emission in T Tauri Binaries: Determining the Parameters that Lead to Planet Formation.
• Skemer, A., Close, L., & Biller, B. (2008). The Characteristics and Periodicity of Extinction Events in VV Ser: A Map of Dust Structures in the Inner-Rim of a Herbig AeBe Disk.
• Biller, B., Close, L., & Liebert, J. (2006). Direct Distance Determination for an Extrasolar Planet Candidate and Young Brown Dwarfs.
• Reid, I. N., Close, L., Siegler, N., Cruz, K. L., & Daemgen, S. (2006). Searching for planetary-mass companions to the youngest, nearest M dwarfs.
• Reid, I. N., Close, L., Siegler, N., & Cruz, K. L. (2005). Searching for planetary-mass companions to the nearest, youngest M dwarfs.
• Close, L., Liebert, J., Burrows, A., & Meyer, M. (2001). Direct imaging of very low mass companions.
• Diolaiti, E., Bendinelli, O., Bonaccini, D., Close, L. M., Currie, D. G., & Parmeggiani, G. (2000). StarFinder: A code for stellar field analysis.
• Close, L. M. (1995). High Resolution Near-Infrared Imaging with Tip - Adaptive Optics..