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Early Release Science of the exoplanet WASP-39b with JWST NIRSpec PRISM.
Rustamkulov, Z; Sing, D K; Mukherjee, S; May, E M; Kirk, J; Schlawin, E; Line, M R; Piaulet, C; Carter, A L; Batalha, N E; Goyal, J M; López-Morales, M; Lothringer, J D; MacDonald, R J; Moran, S E; Stevenson, K B; Wakeford, H R; Espinoza, N; Bean, J L; Batalha, N M; Benneke, B; Berta-Thompson, Z K; Crossfield, I J M; Gao, P; Kreidberg, L; Powell, D K; Cubillos, P E; Gibson, N P; Leconte, J; Molaverdikhani, K; Nikolov, N K; Parmentier, V; Roy, P; Taylor, J; Turner, J D; Wheatley, P J; Aggarwal, K; Ahrer, E; Alam, M K; Alderson, L; Allen, N H; Banerjee, A; Barat, S; Barrado, D; Barstow, J K; Bell, T J; Blecic, J; Brande, J; Casewell, S; Changeat, Q.
Afiliação
  • Rustamkulov Z; Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD, USA. zafar@jhu.edu.
  • Sing DK; Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD, USA.
  • Mukherjee S; Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD, USA.
  • May EM; Department of Astronomy and Astrophysics, University of California, Santa Cruz, Santa Cruz, CA, USA.
  • Kirk J; Johns Hopkins APL, Laurel, MD, USA.
  • Schlawin E; Center for Astrophysics, Harvard and Smithsonian, Cambridge, MA, USA.
  • Line MR; Department of Physics, Imperial College London, London, UK.
  • Piaulet C; Steward Observatory, University of Arizona, Tucson, AZ, USA.
  • Carter AL; School of Earth and Space Exploration, Arizona State University, Tempe, AZ, USA.
  • Batalha NE; Institute of Research on Exoplanets, Department of Physics, University of Montreal, Montreal, Québec, Canada.
  • Goyal JM; Department of Astronomy and Astrophysics, University of California, Santa Cruz, Santa Cruz, CA, USA.
  • López-Morales M; NASA Ames Research Center, Moffett Field, CA, USA.
  • Lothringer JD; School of Earth and Planetary Sciences, National Institute of Science Education and Research (NISER), HBNI, Jatani, India.
  • MacDonald RJ; Center for Astrophysics, Harvard and Smithsonian, Cambridge, MA, USA.
  • Moran SE; Department of Physics, Utah Valley University, Orem, UT, USA.
  • Stevenson KB; Department of Astronomy, University of Michigan, Ann Arbor, MI, USA.
  • Wakeford HR; Department of Astronomy and Carl Sagan Institute, Cornell University, Ithaca, NY, USA.
  • Espinoza N; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Bean JL; Johns Hopkins APL, Laurel, MD, USA.
  • Batalha NM; School of Physics, University of Bristol, HH Wills Physics Laboratory, Bristol, UK.
  • Benneke B; Space Telescope Science Institute, Baltimore, MD, USA.
  • Berta-Thompson ZK; Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL, USA.
  • Crossfield IJM; Department of Astronomy and Astrophysics, University of California, Santa Cruz, Santa Cruz, CA, USA.
  • Gao P; Institute of Research on Exoplanets, Department of Physics, University of Montreal, Montreal, Québec, Canada.
  • Kreidberg L; Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO, USA.
  • Powell DK; Department of Physics and Astronomy, University of Kansas, Lawrence, KS, USA.
  • Cubillos PE; Earth and Planets Laboratory, Carnegie Institution of Washington, Washington, DC, USA.
  • Gibson NP; Max Planck Institute for Astronomy, Heidelberg, Germany.
  • Leconte J; Harvard and Smithsonian, Center for Astrophysics, Cambridge, MA, USA.
  • Molaverdikhani K; INAF - Astrophysics Observatory at Turin, Turin, Italy.
  • Nikolov NK; School of Physics, Trinity College Dublin, Dublin, Ireland.
  • Parmentier V; Laboratoire d'Astrophysique de Bordeaux, CNRS, Université de Bordeaux, Pessac, France.
  • Roy P; University Observatory Munich, Ludwig Maximilian University, Munich, Germany.
  • Taylor J; Exzellenzcluster Origins, Garching, Germany.
  • Turner JD; Space Telescope Science Institute, Baltimore, MD, USA.
  • Wheatley PJ; Université Côte d'Azur, Observatoire de la Côte d'Azur, CNRS, Laboratoire Lagrange, Nice, France.
  • Aggarwal K; Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, Oxford, UK.
  • Ahrer E; Institute of Research on Exoplanets, Department of Physics, University of Montreal, Montreal, Québec, Canada.
  • Alam MK; Department of Physics, University of Oxford, Oxford, UK.
  • Alderson L; Department of Astronomy and Carl Sagan Institute, Cornell University, Ithaca, NY, USA.
  • Allen NH; Centre for Exoplanets and Habitability, University of Warwick, Coventry, UK.
  • Banerjee A; Department of Physics, University of Warwick, Coventry, UK.
  • Barat S; Indian Institute of Technology, Indore, Indore, India.
  • Barrado D; Centre for Exoplanets and Habitability, University of Warwick, Coventry, UK.
  • Barstow JK; Department of Physics, University of Warwick, Coventry, UK.
  • Bell TJ; Earth and Planets Laboratory, Carnegie Institution of Washington, Washington, DC, USA.
  • Blecic J; School of Physics, University of Bristol, HH Wills Physics Laboratory, Bristol, UK.
  • Brande J; Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD, USA.
  • Casewell S; School of Physical Sciences, The Open University, Milton Keynes, UK.
  • Changeat Q; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Amsterdam, the Netherlands.
Nature ; 614(7949): 659-663, 2023 02.
Article em En | MEDLINE | ID: mdl-36623548
ABSTRACT
Transmission spectroscopy1-3 of exoplanets has revealed signatures of water vapour, aerosols and alkali metals in a few dozen exoplanet atmospheres4,5. However, these previous inferences with the Hubble and Spitzer Space Telescopes were hindered by the observations' relatively narrow wavelength range and spectral resolving power, which precluded the unambiguous identification of other chemical species-in particular the primary carbon-bearing molecules6,7. Here we report a broad-wavelength 0.5-5.5 µm atmospheric transmission spectrum of WASP-39b8, a 1,200 K, roughly Saturn-mass, Jupiter-radius exoplanet, measured with the JWST NIRSpec's PRISM mode9 as part of the JWST Transiting Exoplanet Community Early Release Science Team Program10-12. We robustly detect several chemical species at high significance, including Na (19σ), H2O (33σ), CO2 (28σ) and CO (7σ). The non-detection of CH4, combined with a strong CO2 feature, favours atmospheric models with a super-solar atmospheric metallicity. An unanticipated absorption feature at 4 µm is best explained by SO2 (2.7σ), which could be a tracer of atmospheric photochemistry. These observations demonstrate JWST's sensitivity to a rich diversity of exoplanet compositions and chemical processes.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article
Texto completo
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article