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Water condensation zones around main sequence stars

hal.structure.identifierLaboratoire de Météorologie Dynamique (UMR 8539) [LMD]
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierObservatoire Astronomique de l'Université de Genève [ObsGE]
dc.contributor.authorTURBET, Martin
hal.structure.identifierNASA Goddard Space Flight Center [GSFC]
dc.contributor.authorFAUCHEZ, Thomas
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorLECONTE, Jeremy
hal.structure.identifierObservatoire Astronomique de l'Université de Genève [ObsGE]
dc.contributor.authorBOLMONT, Emeline
hal.structure.identifierObservatoire Astronomique de l'Université de Genève [ObsGE]
dc.contributor.authorCHAVEROT, Guillaume
hal.structure.identifierLaboratoire de Météorologie Dynamique (UMR 8539) [LMD]
dc.contributor.authorFORGET, Francois
hal.structure.identifierLaboratoire de Météorologie Dynamique (UMR 8539) [LMD]
dc.contributor.authorMILLOUR, Ehouarn
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorSELSIS, Franck
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
dc.contributor.authorCHARNAY, Benjamin
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR_7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorDUCROT, Elsa
hal.structure.identifierUniversité de Liège = University of Liège = Universiteit van Luik = Universität Lüttich [ULiège]
dc.contributor.authorGILLON, Michaël
hal.structure.identifierInstitut d'Astrophysique de Paris [IAP]
dc.contributor.authorMAUREL, Alice
hal.structure.identifierNASA Goddard Space Flight Center [GSFC]
dc.contributor.authorVILLANUEVA, Geronimo
dc.date.issued2023
dc.identifier.issn0004-6361
dc.description.abstractEnUnderstanding the set of conditions that allow rocky planets to have liquid water on their surface -- in the form of lakes, seas or oceans -- is a major scientific step to determine the fraction of planets potentially suitable for the emergence and development of life as we know it on Earth. This effort is also necessary to define and refine the so-called "Habitable Zone" (HZ) in order to guide the search for exoplanets likely to harbor remotely detectable life forms. Until now, most numerical climate studies on this topic have focused on the conditions necessary to maintain oceans, but not to form them in the first place. Here we use the three-dimensional Generic Planetary Climate Model (PCM), historically known as the LMD Generic Global Climate Model (GCM), to simulate water-dominated planetary atmospheres around different types of Main-Sequence stars. The simulations are designed to reproduce the conditions of early ocean formation on rocky planets due to the condensation of the primordial water reservoir at the end of the magma ocean phase. We show that the incoming stellar radiation (ISR) required to form oceans by condensation is always drastically lower than that required to vaporize oceans. We introduce a Water Condensation Limit, which lies at significantly lower ISR than the inner edge of the HZ calculated with three-dimensional numerical climate simulations. This difference is due to a behavior change of water clouds, from low-altitude dayside convective clouds to high-altitude nightside stratospheric clouds. Finally, we calculated transit spectra, emission spectra and thermal phase curves of TRAPPIST-1b, c and d with H2O-rich atmospheres, and compared them to CO2 atmospheres and bare rock simulations. We show using these observables that JWST has the capability to probe steam atmospheres on low-mass planets, and could possibly test the existence of nightside water clouds.
dc.description.sponsorshipSimulations et Observations de la dynamique atmosphérique d'Uranus et Neptune
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enEarth and Planetary Astrophysics (astro-ph.EP)
dc.subject.enAtmospheric and Oceanic Physics (physics.ao-ph)
dc.subject.enGeophysics (physics.geo-ph)
dc.subject.enFOS: Physical sciences
dc.title.enWater condensation zones around main sequence stars
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/202347539
dc.subject.halPlanète et Univers [physics]
dc.identifier.arxiv2308.15110
dc.description.sponsorshipEuropePlasma Circulating Tumor DNA Levels for the Monitoring of Melanoma Patients: Landscape of Available Technologi
dc.description.sponsorshipEuropeWHat next? an Integrated PLanetary Atmosphere Simulator: from Habitable worlds to Hot jupiters
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA126
bordeaux.volume679
bordeaux.peerReviewedoui
hal.identifierhal-04263315
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04263315v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Astronomy%20and%20Astrophysics%20-%20A&A&rft.date=2023&rft.volume=679&rft.spage=A126&rft.epage=A126&rft.eissn=0004-6361&rft.issn=0004-6361&rft.au=TURBET,%20Martin&FAUCHEZ,%20Thomas&LECONTE,%20Jeremy&BOLMONT,%20Emeline&CHAVEROT,%20Guillaume&rft.genre=article


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