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Nightside clouds and disequilibrium chemistry on the hot Jupiter WASP-43b

Bell, Taylor (author)
NASA Ames Research Center
Crouzet, N. (author)
Universiteit Leiden (UL),Leiden University (UL)
Cubillos, P. E. (author)
Istituto nazionale di astrofisica (INAF)
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Kreidberg, L. (author)
Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
Piette, Anjali A.A. (author)
Roman, Michael T. (author)
Universidad Adolfo Ibanez,Adolfo Ibáñez University,University Of Leicester
Barstow, J. (author)
Open University
Blecic, Jasmina (author)
New York University Abu Dhabi
Carone, L. (author)
Coulombe, Louis Philippe (author)
Université de Montréal
Ducrot, E. (author)
Université Paris-Saclay,University Paris-Saclay
Hammond, Mark (author)
University Of Oxford
Mendonça, João M. (author)
Danmarks Tekniske Universitet,Technical University of Denmark
Moses, Julianne I. (author)
Space Science Institute
Parmentier, Vivien (author)
Observatoire de la Cote d'Azur
Stevenson, Kevin B. (author)
The Johns Hopkins University Applied Physics Laboratory
Teinturier, Lucas (author)
Observatoire de Paris,Paris Observatory
Zhang, Michael (author)
University of Chicago
Batalha, Natalie (author)
University of California
Bean, Jacob L. (author)
University of Chicago
Benneke, B. (author)
Université de Montréal
Charnay, Bejamin (author)
Observatoire de Paris,Paris Observatory
Chubb, Katy L. (author)
University of St Andrews
Demory, B.O. (author)
Universität Bern,University of Bern
Gao, Peter (author)
Lee, Elspeth K.H. (author)
Universität Bern,University of Bern
López-Morales, Mercedes (author)
Harvard-Smithsonian Center for Astrophysics
Morello, Giuseppe, 1989 (author)
Istituto nazionale di astrofisica (INAF),Chalmers tekniska högskola,Chalmers University of Technology,Instituto de Astrofísica de Canarias
Rauscher, Emily (author)
University of Michigan
Sing, David K. (author)
Johns Hopkins University
Tan, Xianyu (author)
Shanghai Jiao Tong University,University Of Oxford
Venot, Olivia (author)
Wakeford, Hannah R. (author)
University of Bristol
Aggarwal, Keshav (author)
Indian Institute of Technology
Ahrer, Eva Maria (author)
The University of Warwick
Alam, Munazza K. (author)
Baeyens, Robin (author)
Anton Pannekoek Institute for Astronomy
Barrado, D. (author)
European Space Astronomy Centre (ESAC)
Caceres, Claudio (author)
Universidad Andrés Bello,Centro de Astrofísica y Tecnologías Afines (CATA),
Carter, Aarynn L. (author)
University of California
Casewell, Sarah (author)
University Of Leicester
Challener, Ryan C. (author)
University of Michigan
Crossfield, I. J.M. (author)
University of Kansas
Decin, L. (author)
Katholieke Universiteit Leuven
Desert, J. M. (author)
Anton Pannekoek Institute for Astronomy
Dobbs-Dixon, Ian (author)
New York University Abu Dhabi
Dyrek, A. (author)
Université Paris-Saclay,University Paris-Saclay
Espinoza, Néstor (author)
Space Telescope Science Institute (STScI),Johns Hopkins University
Feinstein, A. D. (author)
University of Colorado at Boulder,University of Chicago
Gibson, Neale P. (author)
Trinity College Dublin, the University of Dublin
Harrington, Joseph (author)
University of Central Florida (UCF)
Helling, Ch. (author)
Hu, Renyu (author)
California Institute of Technology (Caltech)
Iro, Nicolas (author)
Deutsches Zentrums für Luft- und Raumfahrt (DLR),German Aerospace Center (DLR)
Kempton, Eliza M.R. (author)
University of Maryland
Kendrew, S. (author)
European Space Agency (ESA)
Komacek, Thaddeus D. (author)
University of Maryland
Krick, Jessica (author)
California Institute of Technology (Caltech)
Lagage, P. O. (author)
Université Paris-Saclay,University Paris-Saclay
Leconte, J. (author)
Laboratoire d'Astrophysique de Bordeaux
Lendl, M. (author)
Université de Genève,University of Geneva
Lewis, Neil T. (author)
University of Exeter
Lothringer, Joshua D. (author)
Malsky, Isaac (author)
University of Michigan
Mancini, Luigi (author)
Universita degli Studi di Roma Tor Vergata,University of Rome Tor Vergata,Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Istituto nazionale di astrofisica (INAF)
Mansfield, Megan (author)
University of Arizona
Mayne, Nathan J. (author)
University of Exeter
Evans-Soma, Thomas M. (author)
Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),University of Newcastle
Molaverdikhani, K. (author)
Ludwig-Maximilians-Universität München,Ludwig Maximilian University of Munich
Nikolov, Nikolay K. (author)
Space Telescope Science Institute (STScI)
Nixon, M. C. (author)
University of Maryland
Palle, Enric (author)
Instituto de Astrofísica de Canarias
Petit dit de la Roche, Dominique J.M. (author)
Université de Genève,University of Geneva
Piaulet, Caroline (author)
Université de Montréal
Powell, Diana (author)
Harvard-Smithsonian Center for Astrophysics
Rackham, Benjamin V. (author)
Massachusetts Institute of Technology (MIT)
Schneider, Aaron D. (author)
Katholieke Universiteit Leuven,Niels Bohr Institute
Steinrueck, Maria E. (author)
Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
Taylor, Jake (author)
University Of Oxford,Université de Montréal
Welbanks, Luis (author)
Arizona State University
Yurchenko, Sergey N. (author)
University College London (UCL)
Zhang, Xi (author)
University of California
Zieba, Sebastian (author)
Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG),Universiteit Leiden (UL),Leiden University (UL)
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 (creator_code:org_t)
2024
2024
English.
In: Nature Astronomy. - 2397-3366. ; In Press
  • Journal article (peer-reviewed)
Abstract Subject headings
Close  
  • Hot Jupiters are among the best-studied exoplanets, but it is still poorly understood how their chemical composition and cloud properties vary with longitude. Theoretical models predict that clouds may condense on the nightside and that molecular abundances can be driven out of equilibrium by zonal winds. Here we report a phase-resolved emission spectrum of the hot Jupiter WASP-43b measured from 5 μm to 12 μm with the JWST’s Mid-Infrared Instrument. The spectra reveal a large day–night temperature contrast (with average brightness temperatures of 1,524 ± 35 K and 863 ± 23 K, respectively) and evidence for water absorption at all orbital phases. Comparisons with three-dimensional atmospheric models show that both the phase-curve shape and emission spectra strongly suggest the presence of nightside clouds that become optically thick to thermal emission at pressures greater than ~100 mbar. The dayside is consistent with a cloudless atmosphere above the mid-infrared photosphere. Contrary to expectations from equilibrium chemistry but consistent with disequilibrium kinetics models, methane is not detected on the nightside (2σ upper limit of 1–6 ppm, depending on model assumptions). Our results provide strong evidence that the atmosphere of WASP-43b is shaped by disequilibrium processes and provide new insights into the properties of the planet’s nightside clouds. However, the remaining discrepancies between our observations and our predictive atmospheric models emphasize the importance of further exploring the effects of clouds and disequilibrium chemistry in numerical models.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

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By the author/editor
Bell, Taylor
Crouzet, N.
Cubillos, P. E.
Kreidberg, L.
Piette, Anjali A ...
Roman, Michael T ...
show more...
Barstow, J.
Blecic, Jasmina
Carone, L.
Coulombe, Louis ...
Ducrot, E.
Hammond, Mark
Mendonça, João M ...
Moses, Julianne ...
Parmentier, Vivi ...
Stevenson, Kevin ...
Teinturier, Luca ...
Zhang, Michael
Batalha, Natalie
Bean, Jacob L.
Benneke, B.
Charnay, Bejamin
Chubb, Katy L.
Demory, B.O.
Gao, Peter
Lee, Elspeth K.H ...
López-Morales, M ...
Morello, Giusepp ...
Rauscher, Emily
Sing, David K.
Tan, Xianyu
Venot, Olivia
Wakeford, Hannah ...
Aggarwal, Keshav
Ahrer, Eva Maria
Alam, Munazza K.
Baeyens, Robin
Barrado, D.
Caceres, Claudio
Carter, Aarynn L ...
Casewell, Sarah
Challener, Ryan ...
Crossfield, I. J ...
Decin, L.
Desert, J. M.
Dobbs-Dixon, Ian
Dyrek, A.
Espinoza, Néstor
Feinstein, A. D.
Gibson, Neale P.
Harrington, Jose ...
Helling, Ch.
Hu, Renyu
Iro, Nicolas
Kempton, Eliza M ...
Kendrew, S.
Komacek, Thaddeu ...
Krick, Jessica
Lagage, P. O.
Leconte, J.
Lendl, M.
Lewis, Neil T.
Lothringer, Josh ...
Malsky, Isaac
Mancini, Luigi
Mansfield, Megan
Mayne, Nathan J.
Evans-Soma, Thom ...
Molaverdikhani, ...
Nikolov, Nikolay ...
Nixon, M. C.
Palle, Enric
Petit dit de la ...
Piaulet, Carolin ...
Powell, Diana
Rackham, Benjami ...
Schneider, Aaron ...
Steinrueck, Mari ...
Taylor, Jake
Welbanks, Luis
Yurchenko, Serge ...
Zhang, Xi
Zieba, Sebastian
show less...
About the subject
NATURAL SCIENCES
NATURAL SCIENCES
and Physical Science ...
and Astronomy Astrop ...
Articles in the publication
Nature Astronomy
By the university
Chalmers University of Technology

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