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Draft:James E. Larkin

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James E. Larkin
Occupation(s)Astrophysicist and academic
Academic background
EducationB.S., Physics and Mathematics
M.S., Physics
Ph.D., Physics
Alma materCalifornia State University, East Bay
California Institute of Technology
Academic work
InstitutionsUniversity of California, Los Angeles

James E. Larkin is an American astrophysicist and an academic. He is a professor of physics and astronomy at University of California, Los Angeles (UCLA).

Larkin's research interests include extragalactic astrophysics, adaptive optics (AO), and infrared instrumentalization. He has been a recipient of the Alfred P. Sloan research fellowship.

According to Scopus, his research has been cited 9,922 times.

Education

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Larkin received a B.S. in Physics and Mathematics from California State University, East Bay (formerly known as California State University at Hayward) in 1990. In 1992, he completed his M.S. in Physics from California Institute of Technology and in 1996, earned a Ph.D. in Physics from the same institute. Between 1995 and 1997, he was a McCormick postdoctoral fellow at the University of Chicago.[1]

Career

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Larkin joined UCLA in 1997 as professor at the department of Physics and Astronomy.[2] As a principal investigator and co-investigator for projects, he has worked on projects related to imaging devices for astrophysics, including the NIRC2, OSIRIS for the Keck Observatory, the Gemini Planet Imager for the Gemini International Telescopes,[1] and IRIS for the Thirty Meter Telescope.[3] As member of the UCLA Infrared Lab since 1997, he has contributed towards the development and design of diffraction-limited and infrared imaging devices for astrophysics, including OSIRIS.[4]

Research

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Larkin’s research has focused on developing instruments and methods for high-contrast astronomical imaging and extragalactic astronomy. Alongside colleagues, he introduced the Karhunen–Loève Image Projection (KLIP) algorithm, which was designed to reveal faint exoplanets hidden by their host star's light.[5] As part of the research team that developed the Gemini Planet Imager (GPI), he led the development of the integral field spectrograph that works with an advanced adaptive optics (AO), internal interferometer and diffraction control system to provide enhanced contrast performance.[6] The GPI was subsequently used to detect a young Jovian planet, named 51 Eri b, which is the smallest exoplanet to be directly imaged.[7][8] GPI was also used to conduct a field survey of 300 stars, including brown dwarfs and giant exoplanets. The observations resulted in the detection of six giant planets and three brown dwarfs, and statistical analysis of their properties indicated a clear stellar mass dependence on planet occurrence rate, which supported the core/pebble accretion hypothesis.[9]

Larkin led the team that designed and developed OSIRIS, an integral field spectrograph with a spectral resolution of 3800, which achieved a relatively large field of view by the use of a Rockwell Hawaii-2 detector and packing the spectra closely together.[10] Using OSIRIS integral field spectroscopy, he collaboratively made observations of the kinematic structure of z ~ 2-3 galaxies which provided insight into star formation activities at these epochs.[11] OSIRIS also became the first instrument to take a spectrum image of an extrasolar planet,[12] and the first to detect precipitation on another object.[13] In one of his related studies, the Keck II telescope was used to image faint field galaxies and to provide accurate pictures of older stellar populations and their morphology.[14] Moreover, in collaboration with Nobel prize winning laureate Andrea Ghez for research relating to supermassive black holes,[15][16] he investigated star clusters around the supermassive black hole Sgr A* and classified 60 early-type and 74 late-type stars around Sgr A* using the Keck II telescope.[17] Moreover, as per Scopus, his work has received 9,922 citations.[18]

Awards and honors

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  • 1993 – John Stemple Award, California Institute of Technology[19]
  • 1995 – Robert R. McCormick Postdoctoral fellowship, University of Chicago[20]
  • 2000 – Research fellowship, Alfred P. Sloan Foundation[21]

Selected articles

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  • McLean, Ian S.; Becklin, Eric E.; Bendiksen, Oddvar; Brims, George; Canfield, John; Figer, Donald F.; Graham, James R.; Hare, Jonah; Lacayanga, Fred; Larkin, James E.; Larson, Samuel B.; Levenson, Nancy; Magnone, Nick; Teplitz, Harry; Wong, Woon (1998). "Design and development of NIRSPEC: a near-infrared echelle spectrograph for the Keck II telescope". Infrared Astronomical Instrumentation. 3354: 566–578. doi:10.1117/12.317283. ISSN 0277-786X.
  • Ghez, A. M.; Duchêne, G.; Matthews, K.; Hornstein, S. D.; Tanner, A.; Larkin, J.; Morris, M.; Becklin, E. E.; Salim, S.; Kremenek, T.; Thompson, D.; Soifer, B. T.; Neugebauer, G.; McLean, I. (2003). "The First Measurement of Spectral Lines in a Short-Period Star Bound to the Galaxy's Central Black Hole: A Paradox of Youth". The Astrophysical Journal. 586 (2): L127 – L131. doi:10.1086/374804. ISSN 0004-637X.
  • Soummer, Rémi; Pueyo, Laurent; Larkin, James (2012). "Detection and Characterization of Exoplanets and Disks Using Projections on Karhunen-Loève Eigenimages". The Astrophysical Journal. 755 (2): L28. doi:10.1088/2041-8205/755/2/L28. ISSN 0004-637X.
  • Macintosh, Bruce; Graham, James R.; Ingraham, Patrick; Konopacky, Quinn; Marois, Christian; Perrin, Marshall; Poyneer, Lisa; Bauman, Brian; Barman, Travis; Burrows, Adam S.; Cardwell, Andrew; Chilcote, Jeffrey; De Rosa, Robert J.; Dillon, Daren; Doyon, Rene; Dunn, Jennifer; Erikson, Darren; Fitzgerald, Michael P.; Gavel, Donald; Goodsell, Stephen; Hartung, Markus; Hibon, Pascale; Kalas, Paul; Larkin, James; Maire, Jerome; Marchis, Franck; Marley, Mark S.; McBride, James; Millar-Blanchaer, Max; Morzinski, Katie; Norton, Andrew; Oppenheimer, B. R.; Palmer, David; Patience, Jennifer; Pueyo, Laurent; Rantakyro, Fredrik; Sadakuni, Naru; Saddlemyer, Leslie; Savransky, Dmitry; Serio, Andrew; Soummer, Remi; Sivaramakrishnan, Anand; Song, Inseok; Thomas, Sandrine; Wallace, J. Kent; Wiktorowicz, Sloane; Wolff, Schuyler (2014). "First light of the Gemini Planet Imager". Proceedings of the National Academy of Sciences. 111 (35): 12661–12666. doi:10.1073/pnas.1304215111.
  • Macintosh, B.; Graham, J. R.; Barman, T.; De Rosa, R. J.; Konopacky, Q.; Marley, M. S.; Marois, C.; Nielsen, E. L.; Pueyo, L.; Rajan, A.; Rameau, J.; Saumon, D.; Wang, J. J.; Patience, J.; Ammons, M.; Arriaga, P.; Artigau, E.; Beckwith, S.; Brewster, J.; Bruzzone, S.; Bulger, J.; Burningham, B.; Burrows, A. S.; Chen, C.; Chiang, E.; Chilcote, J. K.; Dawson, R. I.; Dong, R.; Doyon, R.; Draper, Z. H.; Duchêne, G.; Esposito, T. M.; Fabrycky, D.; Fitzgerald, M. P.; Follette, K. B.; Fortney, J. J.; Gerard, B.; Goodsell, S.; Greenbaum, A. Z.; Hibon, P.; Hinkley, S.; Cotten, T. H.; Hung, L.-W.; Ingraham, P.; Johnson-Groh, M.; Kalas, P.; Lafreniere, D.; Larkin, J. E.; Lee, J.; Line, M.; Long, D.; Maire, J.; Marchis, F.; Matthews, B. C.; Max, C. E.; Metchev, S.; Millar-Blanchaer, M. A.; Mittal, T.; Morley, C. V.; Morzinski, K. M.; Murray-Clay, R.; Oppenheimer, R.; Palmer, D. W.; Patel, R.; Perrin, M. D.; Poyneer, L. A.; Rafikov, R. R.; Rantakyrö, F. T.; Rice, E. L.; Rojo, P.; Rudy, A. R.; Ruffio, J.-B.; Ruiz, M. T.; Sadakuni, N.; Saddlemyer, L.; Salama, M.; Savransky, D.; Schneider, A. C.; Sivaramakrishnan, A.; Song, I.; Soummer, R.; Thomas, S.; Vasisht, G.; Wallace, J. K.; Ward-Duong, K.; Wiktorowicz, S. J.; Wolff, S. G.; Zuckerman, B. (2015). "Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager". Science. 350 (6256): 64–67. doi:10.1126/science.aac5891.

References

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  1. ^ a b "James' Homepage". UCLA. Retrieved May 30, 2025.
  2. ^ "Members". UCLA Galactic Center Group. Retrieved June 27, 2025.
  3. ^ "Infrared Imaging Spectrograph (IRIS)". TMT International Observatory. Retrieved May 30, 2025.
  4. ^ "UCLA Infrared Lab". UCLA IR Lab. Retrieved May 30, 2025.
  5. ^ Soummer, Rémi; Pueyo, Laurent; Larkin, James (2012). "Detection and Characterization of Exoplanets and Disks Using Projections on Karhunen-Loève Eigenimages". The Astrophysical Journal. 755 (2). doi:10.1088/2041-8205/755/2/L28. ISSN 0004-637X – via The SAO Astrophysics Data System.
  6. ^ Macintosh, Bruce; Graham, James R.; Ingraham, Patrick; Konopacky, Quinn; Marois, Christian; Perrin, Marshall; Poyneer, Lisa; Bauman, Brian; Barman, Travis; Burrows, Adam S.; Cardwell, Andrew; Chilcote, Jeffrey; De Rosa, Robert J.; Dillon, Daren; Doyon, Rene; Dunn, Jennifer; Erikson, Darren; Fitzgerald, Michael P.; Gavel, Donald; Goodsell, Stephen; Hartung, Markus; Hibon, Pascale; Kalas, Paul; Larkin, James; Maire, Jerome; Marchis, Franck; Marley, Mark S.; McBride, James; Millar-Blanchaer, Max; Morzinski, Katie; Norton, Andrew; Oppenheimer, B. R.; Palmer, David; Patience, Jennifer; Pueyo, Laurent; Rantakyro, Fredrik; Sadakuni, Naru; Saddlemyer, Leslie; Savransky, Dmitry; Serio, Andrew; Soummer, Remi; Sivaramakrishnan, Anand; Song, Inseok; Thomas, Sandrine; Wallace, J. Kent; Wiktorowicz, Sloane; Wolff, Schuyler (September 2, 2014). "First light of the Gemini Planet Imager". Proceedings of the National Academy of Sciences. 111 (35): 12661–12666. doi:10.1073/pnas.1304215111 – via PNAS.
  7. ^ Macintosh, B.; Graham, J. R.; Barman, T.; De Rosa, R. J.; Konopacky, Q.; Marley, M. S.; Marois, C.; Nielsen, E. L.; Pueyo, L.; Rajan, A.; Rameau, J.; Saumon, D.; Wang, J. J.; Patience, J.; Ammons, M.; Arriaga, P.; Artigau, E.; Beckwith, S.; Brewster, J.; Bruzzone, S.; Bulger, J.; Burningham, B.; Burrows, A. S.; Chen, C.; Chiang, E.; Chilcote, J. K.; Dawson, R. I.; Dong, R.; Doyon, R.; Draper, Z. H.; Duchêne, G.; Esposito, T. M.; Fabrycky, D.; Fitzgerald, M. P.; Follette, K. B.; Fortney, J. J.; Gerard, B.; Goodsell, S.; Greenbaum, A. Z.; Hibon, P.; Hinkley, S.; Cotten, T. H.; Hung, L.-W.; Ingraham, P.; Johnson-Groh, M.; Kalas, P.; Lafreniere, D.; Larkin, J. E.; Lee, J.; Line, M.; Long, D.; Maire, J.; Marchis, F.; Matthews, B. C.; Max, C. E.; Metchev, S.; Millar-Blanchaer, M. A.; Mittal, T.; Morley, C. V.; Morzinski, K. M.; Murray-Clay, R.; Oppenheimer, R.; Palmer, D. W.; Patel, R.; Perrin, M. D.; Poyneer, L. A.; Rafikov, R. R.; Rantakyrö, F. T.; Rice, E. L.; Rojo, P.; Rudy, A. R.; Ruffio, J.-B.; Ruiz, M. T.; Sadakuni, N.; Saddlemyer, L.; Salama, M.; Savransky, D.; Schneider, A. C.; Sivaramakrishnan, A.; Song, I.; Soummer, R.; Thomas, S.; Vasisht, G.; Wallace, J. K.; Ward-Duong, K.; Wiktorowicz, S. J.; Wolff, S. G.; Zuckerman, B. (October 2, 2015). "Discovery and spectroscopy of the young jovian planet 51 Eri b with the Gemini Planet Imager". Science. 350 (6256): 64–67. doi:10.1126/science.aac5891 – via Science.
  8. ^ Billings, Lee. "Astronomers Glimpse a Young Jupiter, 51 Eridani b". Scientific American. Retrieved May 30, 2025.
  9. ^ Nielsen, E. L.; De Rosa, R.; Macintosh, B.; Wang, J.; Ruffio, J.; Chiang, E.; Marley, M.; Saumon, D.; Savransky, D.; Team, Gemini Planet Imager Exoplanet Survey (January 2020). "The Gemini Planet Imager Exoplanet Survey: Giant Planet and Brown Dwarf Demographics from 10-100 AU". American Astronomical Society Meeting Abstracts #235. 235: 280.02 – via The SAO Astrophysics Data System.
  10. ^ Larkin, James; Barczys, Matthew; Krabbe, Alfred; Adkins, Sean; Aliado, Ted; Amico, Paola; Brims, George; Campbell, Randy; Canfield, John; Gasaway, Thomas; Honey, Allan; Iserlohe, Christof; Johnson, Chris; Kress, Evan; LaFreniere, David; Magnone, Ken; Magnone, Nick; McElwain, Michael; Moon, Juleen; Quirrenbach, Andreas; Skulason, Gunnar; Song, Inseok; Spencer, Michael; Weiss, Jason; Wright, Shelley (1 June 2006). "OSIRIS: A diffraction limited integral field spectrograph for Keck". New Astronomy Reviews. 50 (4): 362–364. doi:10.1016/j.newar.2006.02.005. ISSN 1387-6473 – via ScienceDirect.
  11. ^ Law, David R.; Steidel, Charles C.; Erb, Dawn K.; Larkin, James E.; Pettini, Max; Shapley, Alice E.; Wright, Shelley A. (June 2009). "The Kiloparsec-scale Kinematics of High-redshift Star-forming Galaxies". The Astrophysical Journal. 697 (2): 2057–2082. doi:10.1088/0004-637X/697/2/2057. ISSN 0004-637X – via The SAO Astrophysics Data System.
  12. ^ Bowler, Brendan P.; Liu, Michael C.; Dupuy, Trent J.; Cushing, Michael C. (November 2010). "Near-infrared Spectroscopy of the Extrasolar Planet HR 8799 b". The Astrophysical Journal. pp. 850–868. doi:10.1088/0004-637X/723/1/850. Retrieved May 30, 2025.
  13. ^ Ádámkovics, Máté; Wong, Michael H.; Laver, Conor; de Pater, Imke (November 2007). "Widespread Morning Drizzle on Titan". Science. p. 962. doi:10.1126/science.1146244. Retrieved May 30, 2025.
  14. ^ Wizinowich, P.; Acton, D. S.; Shelton, C.; Stomski, P.; Gathright, J.; Ho, K.; Lupton, W.; Tsubota, K.; Lai, O.; Max, C.; Brase, J.; An, J.; Avicola, K.; Olivier, S.; Gavel, D.; Macintosh, B.; Ghez, A.; Larkin, J. (March 2000). "First Light Adaptive Optics Images from the Keck II Telescope: A New Era of High Angular Resolution Imagery". Publications of the Astronomical Society of the Pacific. 112 (769): 315–319. doi:10.1086/316543. ISSN 0004-6280 – via The SAO Astrophysics Data System.
  15. ^ "Einstein was right about relativity, UCLA says — for now". University of California. July 29, 2019. Retrieved May 20, 2025.
  16. ^ "What the World's Best Telescope Can Teach Us". UCLA. Retrieved May 30, 2025.
  17. ^ Do, T.; Ghez, A. M.; Morris, M. R.; Lu, J. R.; Matthews, K.; Yelda, S.; Larkin, J. (October 2009). "High Angular Resolution Integral-Field Spectroscopy of the Galaxy's Nuclear Cluster: A Missing Stellar Cusp?". The Astrophysical Journal. 703 (2): 1323–1337. doi:10.1088/0004-637X/703/2/1323. ISSN 0004-637X – via The SAO Astrophysics Data System.
  18. ^ "Larkin, James E." Scopus. Retrieved June 27, 2025.
  19. ^ "John S. Stemple Memorial Prize WInners". Caltech. Retrieved May 30, 2025.
  20. ^ "Members". UCLA Galactic Center Group. Retrieved May 30, 2025.
  21. ^ "Annual report" (PDF). Sloan Foundation. Retrieved May 30, 2025.
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James E. Larkin publications indexed by Google Scholar

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