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Is Gliese 581d habitable? Some constraints from radiative-convective climate modeling

hal.structure.identifierDepartment of Atmospheric, Oceanic and Planetary Physics [Oxford] [AOPP]
dc.contributor.authorWORDSWORTH, R.
hal.structure.identifierLaboratoire de Météorologie Dynamique (UMR 8539) [LMD]
dc.contributor.authorFORGET, F.
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
hal.structure.identifierObservatoire aquitain des sciences de l'univers [OASU]
hal.structure.identifierUniversité Sciences et Technologies - Bordeaux 1 [UB]
hal.structure.identifierLaboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
dc.contributor.authorSELSIS, Franck
dc.contributor.authorMADELEINE, J. -B.
hal.structure.identifierLaboratoire de Météorologie Dynamique (UMR 8539) [LMD]
dc.contributor.authorMILLOUR, E.
dc.contributor.authorEYMET, Vincent
dc.date.created2010-05-27
dc.date.issued2010
dc.identifier.issn0004-6361
dc.description.abstractEnThe recently discovered exoplanet Gl581d is extremely close to the outer edge of its system's habitable zone, which has led to much speculation on its possible climate. We have performed a range of simulations to assess whether, given simple combinations of chemically stable greenhouse gases, the planet could sustain liquid water on its surface. For best estimates of the surface gravity, surface albedo and cloud coverage, we find that less than 10 bars of CO2 is sufficient to maintain a global mean temperature above the melting point of water. Furthermore, even with the most conservative choices of these parameters, we calculate temperatures above the water melting point for CO2 partial pressures greater than about 30 bar. However, we note that as Gl581d is probably in a tidally resonant orbit, further simulations in 3D are required to test whether such atmospheric conditions are stable against the collapse of CO2 on the surface.
dc.language.isoen
dc.publisherEDP Sciences
dc.title.enIs Gliese 581d habitable? Some constraints from radiative-convective climate modeling
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/201015053
dc.subject.halPhysique [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
dc.identifier.arxiv1005.5098
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.pageA22
bordeaux.volume522
bordeaux.peerReviewedoui
hal.identifierhal-00522246
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-00522246v1
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