Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Katelyn Horstman"'
Autor:
Daniel Echeverri, Jerry W. Xuan, John D. Monnier, Jacques-Robert Delorme, Jason J. Wang, Nemanja Jovanovic, Katelyn Horstman, Garreth Ruane, Bertrand Mennesson, Eugene Serabyn, Dimitri Mawet, J. Kent Wallace, Sofia Hillman, Ashley Baker, Randall Bartos, Benjamin Calvin, Sylvain Cetre, Greg Doppmann, Luke Finnerty, Michael P. Fitzgerald, Chih-Chun Hsu, Joshua Liberman, Ronald López, Maxwell Millar-Blanchaer, Evan Morris, Jacklyn Pezzato, Jean-Baptiste Ruffio, Ben Sappey, Tobias Schofield, Andrew J. Skemer, Ji Wang, Yinzi Xin, Narsireddy Anugu, Sorabh Chhabra, Noura Ibrahim, Stefan Kraus, Gail H. Schaefer, Cyprien Lanthermann
Publikováno v:
The Astrophysical Journal Letters, Vol 965, Iss 2, p L15 (2024)
Vortex fiber nulling (VFN) is a technique for detecting and characterizing faint companions at small separations from their host star. A near-infrared (∼2.3 μ m) VFN demonstrator mode was deployed on the Keck Planet Imager and Characterizer (KPIC)
Externí odkaz:
https://doaj.org/article/29bcb249bb7044ffb9d1f1f9e09b3bc6
Autor:
Katelyn Horstman, Jean-Baptiste Ruffio, Konstantin Batygin, Dimitri Mawet, Ashley Baker, Chih-Chun Hsu, Jason J. Wang, Ji Wang, Sarah Blunt, Jerry W. Xuan, Yinzi Xin, Joshua Liberman, Shubh Agrawal, Quinn M. Konopacky, Geoffrey A. Blake, Clarissa R. Do Ó, Randall Bartos, Charlotte Z. Bond, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Daniel Echeverri, Luke Finnerty, Michael P. Fitzgerald, Nemanja Jovanovic, Ronald López, Emily C. Martin, Evan Morris, Jacklyn Pezzato, Garreth Ruane, Ben Sappey, Tobias Schofield, Andrew Skemer, Taylor Venenciano, J. Kent Wallace, Nicole L. Wallack, Peter Wizinowich
Publikováno v:
The Astronomical Journal, Vol 168, Iss 4, p 175 (2024)
GQ Lup B is one of the few substellar companions with a detected cicumplanetary disk (CPD). Observations of the CPD suggest the presence of a cavity, possibly formed by an exosatellite. Using the Keck Planet Imager and Characterizer (KPIC), a high-co
Externí odkaz:
https://doaj.org/article/c73c3afcce94454caf749c0fe29a4ed0
Autor:
Yapeng Zhang, Jerry W. Xuan, Dimitri Mawet, Jason J. Wang, Chih-Chun Hsu, Jean-Bapiste Ruffio, Heather A. Knutson, Julie Inglis, Geoffrey A. Blake, Yayaati Chachan, Katelyn Horstman, Ashley Baker, Randall Bartos, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Daniel Echeverri, Luke Finnerty, Michael P. Fitzgerald, Nemanja Jovanovic, Joshua Liberman, Ronald A. López, Evan Morris, Jacklyn Pezzato, Ben Sappey, Tobias Schofield, Andrew Skemer, J. Kent Wallace, Ji Wang, Clarissa R. Do Ó
Publikováno v:
The Astronomical Journal, Vol 168, Iss 3, p 131 (2024)
Young, self-luminous super-Jovian companions discovered by direct imaging provide a challenging test for planet formation and evolution theories. By spectroscopically characterizing the atmospheric compositions of these super-Jupiters, we can constra
Externí odkaz:
https://doaj.org/article/c1757b3ebae64785b7520f2bc7f279d7
Autor:
Chih-Chun Hsu, Jason J. Wang, Jerry W. Xuan, Jean-Baptiste Ruffio, Evan Morris, Daniel Echeverri, Yinzi Xin, Joshua Liberman, Luke Finnerty, Katelyn Horstman, Ben Sappey, Gregory W. Doppmann, Dimitri Mawet, Nemanja Jovanovic, Michael P. Fitzgerald, Jacques-Robert Delorme, J. Kent Wallace, Ashley Baker, Randall Bartos, Geoffrey A. Blake, Benjamin Calvin, Sylvain Cetre, Ronald A. López, Jacklyn Pezzato, Tobias Schofield, Andrew Skemer, Ji Wang
Publikováno v:
The Astrophysical Journal, Vol 971, Iss 1, p 9 (2024)
We present the projected rotational velocity and molecular abundances for HD 33632 Ab obtained via Keck Planet Imager and Characterizer (KPIC) high-resolution spectroscopy. HD 33632 Ab is a nearby benchmark brown dwarf companion at a separation of
Externí odkaz:
https://doaj.org/article/62228735e3354be4a934a22a20810b30
Autor:
Jerry W. Xuan, Chih-Chun Hsu, Luke Finnerty, Jason Wang, Jean-Baptiste Ruffio, Yapeng Zhang, Heather A. Knutson, Dimitri Mawet, Eric E. Mamajek, Julie Inglis, Nicole L. Wallack, Marta L. Bryan, Geoffrey A. Blake, Paul Mollière, Neda Hejazi, Ashley Baker, Randall Bartos, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Daniel Echeverri, Michael P. Fitzgerald, Nemanja Jovanovic, Joshua Liberman, Ronald A. López, Evan Morris, Jacklyn Pezzato, Ben Sappey, Tobias Schofield, Andrew Skemer, J. Kent Wallace, Ji Wang, Shubh Agrawal, Katelyn Horstman
Publikováno v:
The Astrophysical Journal, Vol 970, Iss 1, p 71 (2024)
Using Keck Planet Imager and Characterizer high-resolution ( R ∼ 35,000) spectroscopy from 2.29 to 2.49 μ m, we present uniform atmospheric retrievals for eight young substellar companions with masses of ∼10–30 M _Jup , orbital separations spa
Externí odkaz:
https://doaj.org/article/69bc8d6d48d6452bb18a516f982d475d
Autor:
Jerry W. Xuan, Jason Wang, Luke Finnerty, Katelyn Horstman, Simon Grimm, Anne E. Peck, Eric Nielsen, Heather A. Knutson, Dimitri Mawet, Howard Isaacson, Andrew W. Howard, Michael C. Liu, Sam Walker, Mark W. Phillips, Geoffrey A. Blake, Jean-Baptiste Ruffio, Yapeng Zhang, Julie Inglis, Nicole L. Wallack, Aniket Sanghi, Erica J. Gonzales, Fei Dai, Ashley Baker, Randall Bartos, Charlotte Z. Bond, Marta L. Bryan, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Daniel Echeverri, Michael P. Fitzgerald, Nemanja Jovanovic, Joshua Liberman, Ronald A. López, Emily C. Martin, Evan Morris, Jacklyn Pezzato, Garreth Ruane, Ben Sappey, Tobias Schofield, Andrew Skemer, Taylor Venenciano, J. Kent Wallace, Ji Wang, Peter Wizinowich, Yinzi Xin, Shubh Agrawal, Clarissa R. Do Ó, Chih-Chun Hsu, Caprice L. Phillips
Publikováno v:
The Astrophysical Journal, Vol 962, Iss 1, p 10 (2024)
M dwarfs are common host stars to exoplanets but often lack atmospheric abundance measurements. Late-M dwarfs are also good analogs to the youngest substellar companions, which share similar T _eff ∼ 2300–2800 K. We present atmospheric analyses f
Externí odkaz:
https://doaj.org/article/1d532df8b3dd453999dd5def32caedb8
Autor:
Jean-Baptiste Ruffio, Katelyn Horstman, Dimitri Mawet, Lee J. Rosenthal, Konstantin Batygin, Jason J. Wang, Maxwell Millar-Blanchaer, Ji Wang, Benjamin J. Fulton, Quinn M. Konopacky, Shubh Agrawal, Lea A. Hirsch, Andrew W. Howard, Sarah Blunt, Eric Nielsen, Ashley Baker, Randall Bartos, Charlotte Z. Bond, Benjamin Calvin, Sylvain Cetre, Jacques-Robert Delorme, Greg Doppmann, Daniel Echeverri, Luke Finnerty, Michael P. Fitzgerald, Nemanja Jovanovic, Ronald López, Emily C. Martin, Evan Morris, Jacklyn Pezzato, Garreth Ruane, Ben Sappey, Tobias Schofield, Andrew Skemer, Taylor Venenciano, J. Kent Wallace, Nicole L. Wallack, Peter Wizinowich, Jerry W. Xuan
Publikováno v:
The Astronomical Journal, Vol 165, Iss 3, p 113 (2023)
The detection of satellites around extrasolar planets, so called exomoons, remains a largely unexplored territory. In this work, we study the potential of detecting these elusive objects from radial velocity monitoring of self-luminous, directly imag
Externí odkaz:
https://doaj.org/article/18ab5822a5914d118a44f45d00c69a9a
Autor:
Daniel Echeverri, Nemanja Jovanovic, Jacques-Robert Delorme, Yinzi Xin, Tobias Schofield, Luke Finnerty, Jason Wang, Jerry Xuan, Dimitri Mawet, Ashley Baker, Randall Bartos, Charlotte Z. Bond, Marta Bryan, Benjamin Calvin, Sylvain Cetre, Greg Doppmann, Michael P. Fitzgerald, Jason Fucik, Katelyn Horstman, Ronald Lopez, Emily C. Martin, Stefan Martin, Bertrand Mennesson, Evan Morris, Reston Nash, Jacklyn Pezzato, Michael Porter, Sam Ragland, Mitsuko K. Roberts, Garreth Ruane, Jean-Baptiste Ruffio, Ben Sappey, Eugene Serabyn, Andrew Skemer, Taylor Venenciano, J. Kent Wallace, Ji Wang, Peter Wizinowich
Publikováno v:
Ground-based and Airborne Instrumentation for Astronomy IX.
The Keck Planet Imager and Characterizer (KPIC) is a series of upgrades for the Keck II Adaptive Optics (AO) system and the NIRSPEC spectrograph to enable diffraction-limited, high-resolution ($R>30,000$) spectroscopy of exoplanets and low-mass compa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f64fcd31e314391f8b4820b4e12e2b1
https://doi.org/10.1117/12.2630518
https://doi.org/10.1117/12.2630518
Autor:
Jerry W. Xuan, Jason Wang, Jean-Baptiste Ruffio, Heather Knutson, Dimitri Mawet, Paul Mollière, Jared Kolecki, Arthur Vigan, Sagnick Mukherjee, Nicole Wallack, Ji Wang, Ashley Baker, Randall Bartos, Geoffrey A. Blake, Charlotte Z. Bond, Marta Bryan, Benjamin Calvin, Sylvain Cetre, Mark Chun, Jacques-Robert Delorme, Greg Doppmann, Daniel Echeverri, Luke Finnerty, Michael P. Fitzgerald, Katelyn Horstman, Julie Inglis, Nemanja Jovanovic, Ronald López, Emily C. Martin, Evan Morris, Jacklyn Pezzato, Sam Ragland, Bin Ren, Garreth Ruane, Ben Sappey, Tobias Schofield, Andrew Skemer, Taylor Venenciano, J. Kent Wallace, Peter Wizinowich
Publikováno v:
The Astrophysical Journal
The Astrophysical Journal, 2022, 937 (2), pp.54. ⟨10.3847/1538-4357/ac8673⟩
The Astrophysical Journal, 2022, 937 (2), pp.54. ⟨10.3847/1538-4357/ac8673⟩
Direct imaging studies have mainly used low-resolution spectroscopy ($R\sim20-100$) to study the atmospheres of giant exoplanets and brown dwarf companions, but the presence of clouds has often led to degeneracies in the retrieved atmospheric abundan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9c6ea041ae20feffe7960a8c6fea555b
http://arxiv.org/abs/2208.01657
http://arxiv.org/abs/2208.01657
Integral Field Spectrographs (IFS) often require non-trivial calibration techniques to process raw data. The OH Suppressing InfraRed Imaging Spectrograph at the W. M. Keck Observatory is a lenslet-based IFS that requires precise methods to associate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1620a30a902143274bb1aeb74dab1332