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dc.contributor.authorMahapatra, G.
dc.contributor.authorHelling, Ch.
dc.contributor.authorMiguel, Y.
dc.date.accessioned2018-10-29T14:30:09Z
dc.date.available2018-10-29T14:30:09Z
dc.date.issued2017-11-21
dc.identifier.citationMahapatra , G , Helling , C & Miguel , Y 2017 , ' Cloud formation in metal-rich atmospheres of hot super-Earths like 55 Cnc e and CoRoT7b ' , Monthly Notices of the Royal Astronomical Society , vol. 472 , no. 1 , pp. 447-464 . https://doi.org/10.1093/mnras/stx1666en
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 256369682
dc.identifier.otherPURE UUID: f1e3cfaa-cccb-4499-90b7-c6bf9a397d85
dc.identifier.otherRIS: urn:69BABDA4EB3D78AD41DBFDB30D0F5BD9
dc.identifier.otherScopus: 85042075807
dc.identifier.otherWOS: 000413765800036
dc.identifier.urihttps://hdl.handle.net/10023/16351
dc.descriptionGM acknowledges an ERASMUS studentship from the TU Delft. ChH highlights financial support of the European Community under the FP7 by an ERC starting grant number 257431. YM greatly appreciates the CNES travel funding and post-doctoral fellowship programme.en
dc.description.abstractClouds form in the atmospheres of planets where they can determine the observable spectra, the albedo and phase curves. Cloud properties are determined by the local thermodynamical and chemical conditions of an atmospheric gas. A retrieval of gas abundances requires a comprehension of the cloud formation mechanisms under varying chemical conditions. With the aim of studying cloud formation in metal-rich atmospheres, we explore the possibility of clouds in evaporating exoplanets like CoRoT-7b and 55 Cancri e (55 Cnc e) in comparison to a generic set of solar abundances and the metal-rich gas giant HD 149026b. We assess the impact of metal-rich, non-solar element abundances on the gas-phase chemistry, and apply our kinetic, non-equilibrium cloud formation model to study cloud structures and their details. We provide an overview of global cloud properties in terms of material compositions, maximum particle formation rates and average cloud particle sizes for various sets of rocky element abundances. Our results suggest that the conditions on 55 Cnc e and HD 149026b should allow the formation of mineral clouds in their atmosphere. The high temperatures on some hot rocky super-Earths (e.g. the day side of CoRoT-7b) result in an ionized atmospheric gas, and they prevent gas condensation, making cloud formation unlikely on its day side.
dc.format.extent18
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rightsCopyright © 2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://doi.org/10.1093/mnras/stx1666en
dc.subjectAstrochemistryen
dc.subjectSolid state: refractoryen
dc.subjectSolid state: volatileen
dc.subjectMethods: numericalen
dc.subjectPlanets and satellites: atmospheresen
dc.subjectQB Astronomyen
dc.subjectQD Chemistryen
dc.subjectNDASen
dc.subject.lccQBen
dc.subject.lccQDen
dc.titleCloud formation in metal-rich atmospheres of hot super-Earths like 55 Cnc e and CoRoT7ben
dc.typeJournal articleen
dc.contributor.sponsorEuropean Research Councilen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. St Andrews Centre for Exoplanet Scienceen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doihttps://doi.org/10.1093/mnras/stx1666
dc.description.statusPeer revieweden
dc.identifier.urlhttps://arxiv.org/abs/1706.07219en
dc.identifier.grantnumber257431 257431en


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