K
Kevin B. Stevenson
Researcher at Johns Hopkins University
Publications - 245
Citations - 12520
Kevin B. Stevenson is an academic researcher from Johns Hopkins University. The author has contributed to research in topics: Exoplanet & Planet. The author has an hindex of 56, co-authored 212 publications receiving 10413 citations. Previous affiliations of Kevin B. Stevenson include Space Telescope Science Institute & University of Central Florida.
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Journal ArticleDOI
Clouds in the atmosphere of the super-Earth exoplanet GJ 1214b
Laura Kreidberg,Jacob L. Bean,Jean-Michel Desert,Björn Benneke,Drake Deming,Kevin B. Stevenson,Sara Seager,Zachory K. Berta-Thompson,Andreas Seifahrt,Derek Homeier +9 more
TL;DR: A measurement of the transmission spectrum of GJ 1214b at near-infrared wavelengths is reported, sufficiently precise to detect absorption features from a high mean-molecular-mass atmosphere and rule out cloud-free atmospheric models with compositions dominated by water, methane, carbon monoxide, nitrogen or carbon dioxide.
Journal ArticleDOI
A PRECISE WATER ABUNDANCE MEASUREMENT FOR THE HOT JUPITER WASP-43b
Laura Kreidberg,Jacob L. Bean,Jean-Michel Desert,Michael R. Line,Jonathan J. Fortney,Nikku Madhusudhan,Kevin B. Stevenson,Adam P. Showman,David Charbonneau,Peter R. McCullough,Sara Seager,Adam Burrows,Gregory W. Henry,Michael H. Williamson,Tiffany Kataria,Derek Homeier +15 more
TL;DR: In this paper, the water abundance in the atmosphere of the 2 MJup short-period exoplanet WASP-43b was determined based on thermal emission and transmission spectroscopy measurements obtained with the Hubble Space Telescope.
Journal ArticleDOI
A high C/O ratio and weak thermal inversion in the atmosphere of exoplanet WASP-12b
Nikku Madhusudhan,Nikku Madhusudhan,Joseph Harrington,Kevin B. Stevenson,Sarah Nymeyer,Christopher J. Campo,Peter J. Wheatley,Drake Deming,Jasmina Blecic,Ryan A. Hardy,Nate B. Lust,David R. Anderson,Andrew Collier-Cameron,Christopher B. T. Britt,William C. Bowman,Leslie Hebb,Coel Hellier,Pierre F. L. Maxted,Don Pollacco,Richard G. West +19 more
TL;DR: It is found that the extremely irradiated atmosphere of WASP-12b lacks a prominent thermal inversion (or stratosphere) and has very efficient day–night energy circulation, in stark contrast to theoretical predictions for the most highly irradiated hot-Jupiter atmospheres.
Journal ArticleDOI
Thermal structure of an exoplanet atmosphere from phase-resolved emission spectroscopy
Kevin B. Stevenson,Jean-Michel Desert,Michael R. Line,Jacob L. Bean,Jonathan J. Fortney,Adam P. Showman,Tiffany Kataria,Laura Kreidberg,Peter R. McCullough,Peter R. McCullough,Gregory W. Henry,David Charbonneau,Adam Burrows,Sara Seager,Nikku Madhusudhan,Michael H. Williamson,Derek Homeier +16 more
TL;DR: Spectroscopic thermal emission measurements as a function of orbital phase (“phase-curve observations”) for the highly irradiated exoplanet WASP-43b spanning three full planet rotations using the Hubble Space Telescope are presented.
Journal ArticleDOI
A Detection of Water in the Transmission Spectrum of the Hot Jupiter WASP-12b and Implications for its Atmospheric Composition
Laura Kreidberg,Michael R. Line,Jacob L. Bean,Kevin B. Stevenson,Jean-Michel Desert,Nikku Madhusudhan,Jonathan J. Fortney,Joanna K. Barstow,Gregory W. Henry,Michael H. Williamson,Adam P. Showman +10 more
TL;DR: In this article, a near-infrared transmission spectrum for WASP-12b based on six transit observations with the Hubble Space Telescope/Wide Field Camera 3 (HST-WFC) was reported.