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Early Release Science of the exoplanet WASP-39b with JWST NIRSpec G395H.
Alderson, Lili; Wakeford, Hannah R; Alam, Munazza K; Batalha, Natasha E; Lothringer, Joshua D; Adams Redai, Jea; Barat, Saugata; Brande, Jonathan; Damiano, Mario; Daylan, Tansu; Espinoza, Néstor; Flagg, Laura; Goyal, Jayesh M; Grant, David; Hu, Renyu; Inglis, Julie; Lee, Elspeth K H; Mikal-Evans, Thomas; Ramos-Rosado, Lakeisha; Roy, Pierre-Alexis; Wallack, Nicole L; Batalha, Natalie M; Bean, Jacob L; Benneke, Björn; Berta-Thompson, Zachory K; Carter, Aarynn L; Changeat, Quentin; Colón, Knicole D; Crossfield, Ian J M; Désert, Jean-Michel; Foreman-Mackey, Daniel; Gibson, Neale P; Kreidberg, Laura; Line, Michael R; López-Morales, Mercedes; Molaverdikhani, Karan; Moran, Sarah E; Morello, Giuseppe; Moses, Julianne I; Mukherjee, Sagnick; Schlawin, Everett; Sing, David K; Stevenson, Kevin B; Taylor, Jake; Aggarwal, Keshav; Ahrer, Eva-Maria; Allen, Natalie H; Barstow, Joanna K; Bell, Taylor J; Blecic, Jasmina.
Afiliação
  • Alderson L; School of Physics, HH Wills Physics Laboratory, University of Bristol, Bristol, UK. lili.alderson@bristol.ac.uk.
  • Wakeford HR; School of Physics, HH Wills Physics Laboratory, University of Bristol, Bristol, UK. hannah.wakeford@bristol.ac.uk.
  • Alam MK; Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC, USA.
  • Batalha NE; NASA Ames Research Center, Moffett Field, CA, USA.
  • Lothringer JD; Department of Physics, Utah Valley University, Orem, UT, USA.
  • Adams Redai J; Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA, USA.
  • Barat S; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Amsterdam, The Netherlands.
  • Brande J; Department of Physics & Astronomy, University of Kansas, Lawrence, KS, USA.
  • Damiano M; Astrophysics Section, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
  • Daylan T; Department of Astrophysical Sciences, Princeton University, Princeton, NJ, USA.
  • Espinoza N; Space Telescope Science Institute, Baltimore, MD, USA.
  • Flagg L; Department of Physics & Astronomy, Johns Hopkins University, Baltimore, MD, USA.
  • Goyal JM; Department of Astronomy, Cornell University, Ithaca, NY, USA.
  • Grant D; Carl Sagan Institute, Cornell University, Ithaca, NY, USA.
  • Hu R; School of Earth and Planetary Sciences (SEPS), National Institute of Science Education and Research (NISER), Homi Bhabha National Institute (HBNI), Jatani, India.
  • Inglis J; School of Physics, HH Wills Physics Laboratory, University of Bristol, Bristol, UK.
  • Lee EKH; Astrophysics Section, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, USA.
  • Mikal-Evans T; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.
  • Ramos-Rosado L; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.
  • Roy PA; Center for Space and Habitability, University of Bern, Bern, Switzerland.
  • Wallack NL; Max Planck Institute for Astronomy, Heidelberg, Germany.
  • Batalha NM; Department of Physics & Astronomy, Johns Hopkins University, Baltimore, MD, USA.
  • Bean JL; Department of Physics, Université de Montréal, Montreal, Quebec, Canada.
  • Benneke B; Institute for Research on Exoplanets, Université de Montréal, Montreal, Quebec, Canada.
  • Berta-Thompson ZK; Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC, USA.
  • Carter AL; Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, USA.
  • Changeat Q; Department of Astronomy and Astrophysics, University of California, Santa Cruz, Santa Cruz, CA, USA.
  • Colón KD; Department of Astronomy and Astrophysics, University of Chicago, Chicago, IL, USA.
  • Crossfield IJM; Department of Physics, Université de Montréal, Montreal, Quebec, Canada.
  • Désert JM; Institute for Research on Exoplanets, Université de Montréal, Montreal, Quebec, Canada.
  • Foreman-Mackey D; Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO, USA.
  • Gibson NP; Department of Astronomy and Astrophysics, University of California, Santa Cruz, Santa Cruz, CA, USA.
  • Kreidberg L; European Space Agency, Space Telescope Science Institute, Baltimore, MD, USA.
  • Line MR; Department of Physics and Astronomy, University College London, London, UK.
  • López-Morales M; NASA Goddard Space Flight Center, Greenbelt, MD, USA.
  • Molaverdikhani K; Department of Physics & Astronomy, University of Kansas, Lawrence, KS, USA.
  • Moran SE; Anton Pannekoek Institute for Astronomy, University of Amsterdam, Amsterdam, The Netherlands.
  • Morello G; Center for Computational Astrophysics, Flatiron Institute, New York, NY, USA.
  • Moses JI; School of Physics, Trinity College Dublin, Dublin, Ireland.
  • Mukherjee S; Max Planck Institute for Astronomy, Heidelberg, Germany.
  • Schlawin E; School of Earth and Space Exploration, Arizona State University, Tempe, AZ, USA.
  • Sing DK; Center for Astrophysics | Harvard & Smithsonian, Cambridge, MA, USA.
  • Stevenson KB; University Observatory Munich, Ludwig Maximilian University of Munich, Munich, Germany.
  • Taylor J; Exzellenzcluster Origins, Garching, Germany.
  • Aggarwal K; Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, USA.
  • Ahrer EM; Instituto de Astrofísica de Canarias (IAC), Tenerife, Spain.
  • Allen NH; Departamento de Astrofísica, Universidad de La Laguna (ULL), Tenerife, Spain.
  • Barstow JK; INAF - Palermo Astronomical Observatory, Palermo, Italy.
  • Bell TJ; Space Science Institute, Boulder, CO, USA.
  • Blecic J; Department of Astronomy and Astrophysics, University of California, Santa Cruz, Santa Cruz, CA, USA.
Nature ; 614(7949): 664-669, 2023 02.
Article em En | MEDLINE | ID: mdl-36623549
ABSTRACT
Measuring the abundances of carbon and oxygen in exoplanet atmospheres is considered a crucial avenue for unlocking the formation and evolution of exoplanetary systems1,2. Access to the chemical inventory of an exoplanet requires high-precision observations, often inferred from individual molecular detections with low-resolution space-based3-5 and high-resolution ground-based6-8 facilities. Here we report the medium-resolution (R ≈ 600) transmission spectrum of an exoplanet atmosphere between 3 and 5 µm covering several absorption features for the Saturn-mass exoplanet WASP-39b (ref. 9), obtained with the Near Infrared Spectrograph (NIRSpec) G395H grating of JWST. Our observations achieve 1.46 times photon precision, providing an average transit depth uncertainty of 221 ppm per spectroscopic bin, and present minimal impacts from systematic effects. We detect significant absorption from CO2 (28.5σ) and H2O (21.5σ), and identify SO2 as the source of absorption at 4.1 µm (4.8σ). Best-fit atmospheric models range between 3 and 10 times solar metallicity, with sub-solar to solar C/O ratios. These results, including the detection of SO2, underscore the importance of characterizing the chemistry in exoplanet atmospheres and showcase NIRSpec G395H as an excellent mode for time-series observations over this critical wavelength range10.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Nature Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Reino Unido
Texto completo
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Nature Ano de publicação: 2023 Tipo de documento: Article País de afiliação: Reino Unido