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Migration-driven diversity of super-Earth compositions

dc.contributor.authorRaymond, Sean N.
dc.contributor.authorBoulet, Thibault
dc.contributor.authorIzidoro, Andre [UNESP]
dc.contributor.authorEsteves, Leandro [UNESP]
dc.contributor.authorBitsch, Bertram
dc.contributor.institutionCNRS and Université de Bordeaux
dc.contributor.institutionInstitut d'Astrophysique et de Géophysique
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionMax-Planck-Institut für Astronomie
dc.date.accessioned2019-10-06T15:18:33Z
dc.date.available2019-10-06T15:18:33Z
dc.date.issued2018-01-01
dc.description.abstractA leading model for the origin of super-Earths proposes that planetary embryos migrate inward and pile up on close-in orbits. As large embryos are thought to preferentially form beyond the snowline, this naively predicts that most super-Earths should be very water-rich. Here we show that the shortest period planets formed in the migration model are often purely rocky. The inward migration of icy embryos through the terrestrial zone accelerates the growth of rocky planets via resonant shepherding. We illustrate this process with a simulation that provided a match to the Kepler-36 system of two planets on close orbits with very different densities. In the simulation, two super-Earths formed in a Kepler-36-like configuration; the inner planet was pure rock while the outer one was ice-rich. We conclude from a suite of simulations that the feeding zones of close-in super-Earths are likely to be broad and disconnected from their final orbital radii.en
dc.description.affiliationLaboratoire d'Astrophysique de Bordeaux CNRS and Université de Bordeaux, Allée Geoffroy St. Hilaire
dc.description.affiliationLaboratoire d'Imagerie de systèmes Stellaires et Planétaires Institut d'Astrophysique et de Géophysique
dc.description.affiliationUNESP Univ. Estadual Paulista - Grupo de Dinàmica Orbital Planetologia
dc.description.affiliationMax-Planck-Institut für Astronomie, Königstuhl 17
dc.description.affiliationUnespUNESP Univ. Estadual Paulista - Grupo de Dinàmica Orbital Planetologia
dc.description.sponsorshipEuropean Research Council
dc.description.sponsorshipIdEuropean Research Council: 757448-PAMDORA
dc.format.extentL81-L85
dc.identifierhttp://dx.doi.org/10.1093/mnrasl/sly100
dc.identifier.citationMonthly Notices of the Royal Astronomical Society: Letters, v. 479, n. 1, p. L81-L85, 2018.
dc.identifier.doi10.1093/mnrasl/sly100
dc.identifier.issn1745-3933
dc.identifier.issn1745-3925
dc.identifier.scopus2-s2.0-85053111383
dc.identifier.urihttp://hdl.handle.net/11449/186878
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society: Letters
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectPlanet-disc interactions
dc.subjectPlanets and satellites: composition
dc.subjectPlanets and satellites: dynamical evolution and stability
dc.subjectPlanets and satellites: formation
dc.subjectProtoplanetary discs
dc.titleMigration-driven diversity of super-Earth compositionsen
dc.typeArtigo

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