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The radiative and dynamical impact of clouds in the atmosphere of the hot Jupiter WASP-43 b

hal.structure.identifierObservatoire de Paris
hal.structure.identifierPôle Planétologie du LESIA
dc.contributor.authorTEINTURIER, Lucas
hal.structure.identifierObservatoire de Paris
hal.structure.identifierPôle Planétologie du LESIA
dc.contributor.authorCHARNAY, Benjamin
hal.structure.identifierLaboratoire de Météorologie Dynamique (UMR 8539) [LMD]
dc.contributor.authorSPIGA, A
hal.structure.identifierLaboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics [LESIA]
dc.contributor.authorBÉZARD, B
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorLECONTE, J
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorMECHINEAU, A
hal.structure.identifierAstrophysique Interprétation Modélisation [AIM (UMR_7158 / UMR_E_9005 / UM_112)]
dc.contributor.authorDUCROT, E
hal.structure.identifierLaboratoire de Météorologie Dynamique (UMR 8539) [LMD]
dc.contributor.authorMILLOUR, E
hal.structure.identifierLaboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
dc.contributor.authorCLÉMENT, N
dc.date.issued2024-01-26
dc.identifier.issn0004-6361
dc.description.abstractEnContext. Hot Jupiters are tidally locked gaseous exoplanets that exhibit large day-night temperature contrasts. Their cooler nightsides are thought to host clouds, as has been suggested by numerous observations. However, the exact nature of these clouds, their spatial distribution, and their impact on atmospheric dynamics, thermal structure, and spectra is still unclear.Aims. We investigate the atmosphere of WASP-43 b, a short period hot Jupiter recently observed with JWST, to understand the radiative and dynamical impact of clouds on the atmospheric circulation and thermal structure. We aim to understand the impact of different kinds of condensates potentially forming in WASP-43 b, with various sizes and atmospheric metallicities. Methods. We used a 3D global climate model (GCM) with a new temperature-dependent cloud model that includes radiative feedbacks coupled with hydrodynamical integrations to study the atmospheric properties of WASP-43 b. We produced observables from our GCM simulations and compared them to spectral phase curves from various observations to derive constraints on the atmospheric properties.Results. We show that clouds have a net warming effect, meaning that the greenhouse effect caused by clouds is stronger than the albedo cooling effect. We show that the radiative effect of clouds has various impacts on the dynamical and thermal structure of WASP-43 b. Depending on the type of condensates and their sizes, the radiative-dynamical feedback will modify the horizontal and vertical temperature gradient and reduce the wind speed. For super-solar metallicity atmospheres, fewer clouds form in the atmosphere, leading to a weaker feedback. Comparisons with spectral phase curves observed with HST, Spitzer, and JWST indicate that WASP-43 b's nightside is cloudy and rule out sub-micron Mg 2 SiO 4 cloud particles as the main opacity source. Distinguishing between cloudy solar-and cloudy super-solar-metallicity atmospheres is not straightforward, and further observations of both reflected light and thermal emission are needed.
dc.language.isoen
dc.publisherEDP Sciences
dc.subject.enPlanets and satellites: atmospheres
dc.subject.enmethods: numerical
dc.subject.enInfrared: planetary systems
dc.title.enThe radiative and dynamical impact of clouds in the atmosphere of the hot Jupiter WASP-43 b
dc.typeArticle de revue
dc.identifier.doi10.1051/0004-6361/202347069
dc.subject.halPlanète et Univers [physics]
dc.identifier.arxiv2401.14083
bordeaux.journalAstronomy and Astrophysics - A&A
bordeaux.peerReviewedoui
hal.identifierhal-04467603
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04467603v1
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