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Photochemically produced SO2 in the atmosphere of WASP-39b

dc.contributor.authorTSAI, Shangmin
dc.contributor.authorLEE, Elspeth K.H.
dc.contributor.authorPOWELL, Diana K.
dc.contributor.authorGAO, Peter
dc.contributor.authorZHANG, Xi
dc.contributor.authorMOSES, Julianne I.
dc.contributor.authorHÉBRARD, Éric
hal.structure.identifierLaboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
dc.contributor.authorVENOT, Olivia
dc.contributor.authorPARMENTIER, Vivien
dc.contributor.authorJORDAN, Sean
dc.contributor.authorHU, Renyu
dc.contributor.authorALAM, Munazza K.
dc.contributor.authorALDERSON, Lili
dc.contributor.authorBATALHA, Natalie M.
dc.contributor.authorBEAN, Jacob L.
dc.contributor.authorBENNEKE, Björn
dc.contributor.authorBIERSON, Carver J.
dc.contributor.authorBRADY, Ryan P.
dc.contributor.authorCARONE, Ludmila
dc.contributor.authorCARTER, Aarynn L.
dc.contributor.authorCHUBB, Katy L.
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorLECONTE, Jérémy
dc.contributor.authorLINE, Michael R.
dc.contributor.authorINGLIS, Julie
dc.contributor.authorLÓPEZ-MORALES, Mercedes
dc.contributor.authorMIGUEL, Yamila
dc.contributor.authorMOLAVERDIKHANI, Karan
dc.contributor.authorRUSTAMKULOV, Zafar
dc.contributor.authorSING, David K.
dc.contributor.authorSTEVENSON, Kevin B.
dc.contributor.authorWAKEFORD, Hannah R.
dc.contributor.authorYANG, Jeehyun
dc.contributor.authorAGGARWAL, Keshav
dc.contributor.authorBAEYENS, Robin
dc.contributor.authorBARAT, Saugata
dc.contributor.authorDE VAL-BORRO, Miguel
dc.contributor.authorDAYLAN, Tansu
dc.contributor.authorFORTNEY, Jonathan J.
dc.contributor.authorFRANCE, Kevin C.
dc.contributor.authorGOYAL, Jayesh M.
dc.contributor.authorGRANT, David
dc.contributor.authorKIRK, James
dc.contributor.authorKREIDBERG, Laura
dc.contributor.authorLOUCA, Amy J.
dc.contributor.authorMORAN, Sarah E.
dc.contributor.authorMUKHERJEE, Sagnick
dc.contributor.authorNASEDKIN, Evert
dc.contributor.authorOHNO, Kazumasa
dc.contributor.authorRACKHAM, Benjamin V.
dc.contributor.authorREDFIELD, Seth L.
dc.contributor.authorTAYLOR, Jake
hal.structure.identifierMaison de la Simulation [MDLS]
dc.contributor.authorTREMBLIN, Pascal
dc.contributor.authorVISSCHER, Channon
dc.contributor.authorWALLACK, Nicole L.
dc.contributor.authorWELBANKS, Luis
dc.contributor.authorYOUNGBLOOD, Allison A.
dc.contributor.authorAHRER, Eva Maria
dc.contributor.authorBATALHA, Natasha E.
dc.contributor.authorBEHR, Patrick R.
dc.contributor.authorBERTA-THOMPSON, Zachory K.
dc.contributor.authorBLECIC, Jasmina
dc.contributor.authorCASEWELL, Sarah L.
dc.contributor.authorCROSSFIELD, Ian J.M.
dc.contributor.authorCROUZET, Nicolas
dc.contributor.authorCUBILLOS, Patricio E.
dc.contributor.authorDECIN, Leen
dc.contributor.authorDÉSERT, Jean Michel
dc.contributor.authorFEINSTEIN, Adina D.
dc.contributor.authorGIBSON, Neale P.
dc.contributor.authorHARRINGTON, Joseph A.
dc.contributor.authorHENG, Kevin
dc.contributor.authorMANSFIELD, Megan
dc.contributor.authorHENNING, Th K.
dc.contributor.authorKEMPTON, Eliza Miller Ricci
dc.contributor.authorKRICK, Jessica E.
hal.structure.identifierUniversité de Versailles Saint-Quentin-en-Yvelines [UVSQ]
dc.contributor.authorLAGAGE, Pierre Olivier
dc.contributor.authorLENDL, Monika A.
dc.contributor.authorLOTHRINGER, Joshua D.
dc.contributor.authorMAYNE, Nathan J.
dc.contributor.authorMIKAL-EVANS, Thomas
dc.contributor.authorSCHLAWIN, Everett A.
dc.contributor.authorPALLE, Enric B.
dc.contributor.authorSHORTTLE, Oliver
dc.contributor.authorYURCHENKO, Sergey N.
dc.contributor.authorWHEATLEY, Peter J.
dc.date.issued2023
dc.identifier.issn0028-0836
dc.description.abstractEnPhotochemistry is a fundamental process of planetary atmospheres that regulates the atmospheric composition and stability1. However, no unambiguous photochemical products have been detected in exoplanet atmospheres so far. Recent observations from the JWST Transiting Exoplanet Community Early Release Science Program2,3 found a spectral absorption feature at 4.05 μm arising from sulfur dioxide (SO2) in the atmosphere of WASP-39b. WASP-39b is a 1.27-Jupiter-radii, Saturn-mass (0.28 MJ) 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 SO2 in such an atmosphere is through photochemical processes5,6. Here we show that the SO2 distribution computed by a suite of photochemical models robustly explains the 4.05-μm spectral feature identified by JWST transmission observations7 with NIRSpec PRISM (2.7σ)8 and G395H (4.5σ)9. SO2 is produced by successive oxidation of sulfur radicals freed when hydrogen sulfide (H2S) is destroyed. The sensitivity of the SO2 feature to the enrichment of the atmosphere by heavy elements (metallicity) suggests that it can be used as a tracer of atmospheric properties, with WASP-39b exhibiting an inferred metallicity of about 10× solar. We further point out that SO2 also shows observable features at ultraviolet and thermal infrared wavelengths not available from the existing observations.
dc.description.sponsorshipChimie Atmosphérique EXoplanétaire à haute Temperature
dc.language.isoen
dc.publisherNature Publishing Group
dc.title.enPhotochemically produced SO2 in the atmosphere of WASP-39b
dc.typeArticle de revue
dc.identifier.doi10.1038/s41586-023-05902-2
dc.subject.halSciences du Vivant [q-bio]
dc.identifier.arxiv2211.10490
bordeaux.journalNature
bordeaux.page483-487
bordeaux.volume617
bordeaux.issue7961
bordeaux.peerReviewedoui
hal.identifierhal-04233255
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04233255v1
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