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Early Evolution of Super-Earths: From Magma Ocean to Temperate Surface Conditions

hal.structure.identifierGéosciences Paris Sud [GEOPS]
dc.contributor.authorSALVADOR, Arnaud
hal.structure.identifierGéosciences Paris Sud [GEOPS]
dc.contributor.authorMASSOL, Hélène
hal.structure.identifierFluides, automatique, systèmes thermiques [FAST]
dc.contributor.authorDAVAILLE, A.
hal.structure.identifierPLANETO - LATMOS
dc.contributor.authorMARCQ, Emmanuel
hal.structure.identifierGéosciences Paris Sud [GEOPS]
dc.contributor.authorSARDA, Philippe
hal.structure.identifierGéosciences Paris Sud [GEOPS]
dc.contributor.authorCHASSEFIÈRE, Eric
hal.structure.identifierECLIPSE 2018
dc.contributor.authorPLURIEL, William
dc.date.conference2018-12
dc.description.abstractEnRecent discoveries of potentially temperate rocky planets motivate the better characterization of their surface conditions to predict where life could be detected in the universe. Early habitability of rocky planets is determined by the cooling and solidification of the magma ocean (MO) stage. Indeed, the initial volatile content in the MO and the distance from the host star appear to play key-roles in the solidification of the MO, the extraction of the atmosphere, the existence of clouds and the formation (or not) of a primitive water ocean. However, the atmospheric properties strongly influence the planetary albedo, and therefore the amount of sunlight reaching the planet surface. This in turn acts on the cooling rate of the planet and its atmosphere degassing. Using a coupled 1-D MO-atmosphere model, we systematically studied how the feedback between albedo, atmospheric composition, planetary surface temperature and clouds, influences the formation of a water ocean at the end of the initial rapid cooling stage of the planet. Here we extend this approach to different MO scenarios for super-Earths (ratio of planetary to core radius, volatile delivery) and discuss their potential habitability at the end of the rapid cooling stage.
dc.language.isoen
dc.title.enEarly Evolution of Super-Earths: From Magma Ocean to Temperate Surface Conditions
dc.typeCommunication dans un congrès
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]
dc.subject.halPlanète et Univers [physics]/Astrophysique [astro-ph]/Planétologie et astrophysique de la terre [astro-ph.EP]
bordeaux.pageabstract #P42A-07
bordeaux.conference.titleAmerican Geophysical Union, Fall Meeting 2018
bordeaux.countryUS
bordeaux.conference.cityWashington
bordeaux.peerReviewedoui
hal.identifierinsu-02054363
hal.version1
hal.invitednon
hal.proceedingsnon
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//insu-02054363v1
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