Photochemically produced SO2 in the atmosphere of WASP-39b

Tsai, Shang‐Min; Lee, Elspeth K. H.; Powell, Diana; Gao, Peter; Zhang, Xi; Moses, Julianne I.; Hébrard, Éric; Vénot, Olivia; Parmentier, Vivien; Jordan, Sean; Hu, Renyu; Alam, Munazza K.; Alderson, Lili; Batalha, Natalie M.; Bean, Jacob L.; Benneke, Björn; Bierson, C. J.; Brady, Ryan P.; Carone, L.; Carter, Aarynn L.; Chubb, K. L.; Inglis, Julie; Leconte, Jérémy; Line, Michael; López‐Morales, Mercedes; Miguel, Yamila; Molaverdikhani, Karan; Rustamkulov, Zafar; Sing, David K.; Stevenson, Kevin B.; Wakeford, Hannah R.; Yang, Jeehyun; Aggarwal, Keshav; Baeyens, Robin; Barat, Saugata; Val-Borro, M. de; Daylan, Tansu; Fortney, Jonathan J.; France, Kevin; Goyal, Jayesh; Grant, David; Kirk, James; Kreidberg, Laura; Louca, Amy; Moran, Sarah E.; Mukherjee, Sagnick; Nasedkin, E.; Ohno, Kazumasa; Rackham, Benjamin V.; Redfield, Seth; Taylor, Jake; Tremblin, Pascal; Visscher, Channon; Wallack, Nicole L.; Welbanks, Luis; Youngblood, Allison; Ahrer, Eva-Maria; Batalha, Natasha E.; Behr, Patrick; Berta-Thompson, Zachory K.; Blecic, Jasmina; Casewell, S. L.; Crossfield, Ian J. M.; Crouzet, Nicolas; Cubillos, Patricio E.; Decin, L.; Désert, Jean-Michel; Feinstein, Adina D.; Gibson, Neale P.; Harrington, Joseph; Heng, Kevin; Henning, Thomas; Kempton, Eliza M.-R.; Krick, Jessica; Lagage, Pierre-Olivier; Lendl, M.; Lothringer, Joshua D.; Mansfield, Megan; Mayne, N. J.; Evans, T. M.; Πάλλη, Ε.; Schlawin, Everett; Shorttle, Oliver; Wheatley, P. J.; Yurchenko, S. N.

doi:10.1038/s41586-023-05902-2

articleNatureApr 26, 2023HYBRID OA

Photochemically produced SO2 in the atmosphere of WASP-39b

STShang‐Min Tsai EKElspeth K. H. Lee DPDiana Powell PGPeter Gao XZXi Zhang

University of California, Riverside · NOAA Oceanic and Atmospheric Research · +71 more institutions

PubMed

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Abstract

Abstract Photochemistry is a fundamental process of planetary atmospheres that regulates the atmospheric composition and stability 1 . However, no unambiguous photochemical products have been detected in exoplanet atmospheres so far. Recent observations from the JWST Transiting Exoplanet Community Early Release Science Program 2,3 found a spectral absorption feature at 4.05 μm arising from sulfur dioxide (SO 2 ) in the atmosphere of WASP-39b. WASP-39b is a 1.27-Jupiter-radii, Saturn-mass (0.28 M J ) gas giant exoplanet orbiting a Sun-like star with an equilibrium temperature of around 1,100 K (ref. 4 ). The most plausible way of generating SO 2 in such an atmosphere is through photochemical processes 5,6 .…

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Keywords

Exoplanet
Atmosphere (unit)
Astrophysics
Metallicity
Planet
Giant planet
Physics
Chemistry

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