J
James Kirk
Researcher at Smithsonian Institution
Publications - 15
Citations - 273
James Kirk is an academic researcher from Smithsonian Institution. The author has contributed to research in topics: Exoplanet & Hot Jupiter. The author has an hindex of 8, co-authored 15 publications receiving 159 citations. Previous affiliations of James Kirk include Harvard University & Max Planck Society.
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Journal ArticleDOI
Confirmation of WASP-107b’s Extended Helium Atmosphere with Keck II/NIRSPEC
TL;DR: The detection of helium in the extended atmosphere of the sub-Saturn WASP-107b using high resolution near-infrared spectra from Keck II/NIRSPEC was reported in this paper.
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LRG-BEASTS: Transmission Spectroscopy and Retrieval Analysis of the Highly Inflated Saturn-mass Planet WASP-39b
James Kirk,Mercedes Lopez-Morales,Peter J. Wheatley,Ian C. Weaver,Ian Skillen,Tom Louden,James McCormac,Néstor Espinoza +7 more
TL;DR: In this article, a ground-based transmission spectrum and comprehensive retrieval analysis of the highly inflated Saturn-mass planet WASP-39b was presented, which is in good agreement with previous ground-and space-based observations of WASP39b, and covers a wavelength range of 4000-9000A.
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ACCESS: A Visual to Near-infrared Spectrum of the Hot Jupiter WASP-43b with Evidence of H2O, but No Evidence of Na or K
Ian C. Weaver,Mercedes Lopez-Morales,Néstor Espinoza,Benjamin V. Rackham,Benjamin V. Rackham,David J. Osip,Daniel Apai,Andrés Jordán,Andrés Jordán,Alex Bixel,Nikole K. Lewis,Munazza K. Alam,James Kirk,Chima McGruder,Florian Rodler,Jennifer Fienco +15 more
TL;DR: In this paper, a new ground-based visual transmission spectrum of the hot Jupiter WASP-43b, obtained as part of the ACCESS Survey, was derived from four transits observed between 2015 and 2018, with combined wavelength coverage between 5,300 A-9,000 A.
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Evidence of a Clear Atmosphere for WASP-62b: The Only Known Transiting Gas Giant in the JWST Continuous Viewing Zone
Munazza K. Alam,Mercedes Lopez-Morales,Ryan J. MacDonald,Nikolay Nikolov,James Kirk,Jayesh M. Goyal,David K. Sing,Hannah R. Wakeford,Alexander D. Rathcke,Drake Deming,Jorge Sanz-Forcada,Nikole K. Lewis,Joanna K. Barstow,Thomas Mikal-Evans,Lars A. Buchhave +14 more
TL;DR: In this paper, the optical to infrared (0.3−5 μm) transmission spectrum of the hot Jupiter WASP-62b, measured with Hubble/STIS and Spitzer/IRAC, was presented.
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Exoplanet characterisation in the longest known resonant chain: the K2-138 system seen by HARPS
T. Lopez,S. C. C. Barros,Alexandre Santerne,Magali Deleuil,V. Adibekyan,J.-M. Almenara,David J. Armstrong,B. Brugger,B. Brugger,David Barrado,Daniel Bayliss,Isabelle Boisse,Aldo S. Bonomo,François Bouchy,Duncan A. Brown,Emma Carli,Olivier Demangeon,Xavier Dumusque,Rodrigo F. Díaz,Rodrigo F. Díaz,Rodrigo F. Díaz,João P. Faria,Pedro Figueira,E. Foxell,H. Giles,Guillaume Hébrard,Guillaume Hébrard,S. Hojjatpanah,James Kirk,Jorge Lillo-Box,Jorge Lillo-Box,C. Lovis,O. Mousis,H. J. da Nobrega,Louise D. Nielsen,J. J. Neal,H. P. Osborn,Francesco Pepe,Don Pollacco,Nuno C. Santos,S. G. Sousa,Stéphane Udry,Arthur Vigan,Peter J. Wheatley +43 more
TL;DR: In this article, a joint Bayesian analysis of both the K2 photometry and HARPS radial-velocities (RVs) was performed to constrain the parameters of the six planets in orbit.