An ultrahot gas-giant exoplanet with a stratosphere

Thomas M. Evans (), David K. Sing, Tiffany Kataria, Jayesh Goyal, Nikolay Nikolov, Hannah R. Wakeford, Drake Deming, Mark S. Marley, David S. Amundsen, Gilda E. Ballester, Joanna K. Barstow, Lotfi Ben-Jaffel, Vincent Bourrier, Lars A. Buchhave, Ofer Cohen, David Ehrenreich, Antonio García Muñoz, Gregory W. Henry, Heather Knutson, Panayotis Lavvas, Alain Lecavelier des Etangs, Nikole K. Lewis, Mercedes López-Morales, Avi M. Mandell, Jorge Sanz-Forcada, Pascal Tremblin and Roxana Lupu
Additional contact information
Thomas M. Evans: Astrophysics Group, School of Physics, University of Exeter
David K. Sing: Astrophysics Group, School of Physics, University of Exeter
Tiffany Kataria: NASA Jet Propulsion Laboratory
Jayesh Goyal: Astrophysics Group, School of Physics, University of Exeter
Nikolay Nikolov: Astrophysics Group, School of Physics, University of Exeter
Hannah R. Wakeford: NASA Goddard Space Flight Center
Drake Deming: University of Maryland
Mark S. Marley: NASA Ames Research Center
David S. Amundsen: Columbia University
Gilda E. Ballester: Lunar and Planetary Laboratory, University of Arizona
Joanna K. Barstow: University College London
Lotfi Ben-Jaffel: Sorbonne Universités, UPMC Université Paris 6 and CNRS, UMR 7095, Institut d’Astrophysique de Paris
Vincent Bourrier: Observatoire de l’Université de Genève
Lars A. Buchhave: Centre for Star and Planet Formation, Niels Bohr Institute and Natural History Museum, University of Copenhagen
Ofer Cohen: Lowell Center for Space Science and Technology, University of Massachusetts
David Ehrenreich: Observatoire de l’Université de Genève
Antonio García Muñoz: Zentrum für Astronomie und Astrophysik, Technische Universität Berlin
Gregory W. Henry: Center of Excellence in Information Systems, Tennessee State University
Heather Knutson: California Institute of Technology
Panayotis Lavvas: Groupe de Spectrométrie Moléculaire et Atmosphérique, UMR 7331, CNRS, Université de Reims Champagne-Ardenne
Alain Lecavelier des Etangs: Sorbonne Universités, UPMC Université Paris 6 and CNRS, UMR 7095, Institut d’Astrophysique de Paris
Nikole K. Lewis: Space Telescope Science Institute
Mercedes López-Morales: Harvard-Smithsonian Center for Astrophysics
Avi M. Mandell: NASA Goddard Space Flight Center
Jorge Sanz-Forcada: Centro de Astrobiología (CSIC-INTA), ESAC Campus, Camino bajo del Castillo
Pascal Tremblin: Maison de la Simulation, CEA, CNRS, Université Paris-Sud, UVSQ, Université Paris-Saclay
Roxana Lupu: Bay Area Environmental Research Institute

Nature, 2017, vol. 548, issue 7665, 58-61

Abstract: Observations of the gas-giant exoplanet WASP-121b reveal near-infrared emission lines of water, suggesting that the planet has a stratosphere—a layer in the upper atmosphere where temperature increases with altitude.

Date: 2017
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DOI: 10.1038/nature23266

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