Migration-driven diversity of super-Earth compositions
dc.contributor.author | Raymond, Sean N. | |
dc.contributor.author | Boulet, Thibault | |
dc.contributor.author | Izidoro, Andre [UNESP] | |
dc.contributor.author | Esteves, Leandro [UNESP] | |
dc.contributor.author | Bitsch, Bertram | |
dc.contributor.institution | CNRS and Université de Bordeaux | |
dc.contributor.institution | Institut d'Astrophysique et de Géophysique | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Max-Planck-Institut für Astronomie | |
dc.date.accessioned | 2019-10-06T15:18:33Z | |
dc.date.available | 2019-10-06T15:18:33Z | |
dc.date.issued | 2018-01-01 | |
dc.description.abstract | A 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.affiliation | Laboratoire d'Astrophysique de Bordeaux CNRS and Université de Bordeaux, Allée Geoffroy St. Hilaire | |
dc.description.affiliation | Laboratoire d'Imagerie de systèmes Stellaires et Planétaires Institut d'Astrophysique et de Géophysique | |
dc.description.affiliation | UNESP Univ. Estadual Paulista - Grupo de Dinàmica Orbital Planetologia | |
dc.description.affiliation | Max-Planck-Institut für Astronomie, Königstuhl 17 | |
dc.description.affiliationUnesp | UNESP Univ. Estadual Paulista - Grupo de Dinàmica Orbital Planetologia | |
dc.description.sponsorship | European Research Council | |
dc.description.sponsorshipId | European Research Council: 757448-PAMDORA | |
dc.format.extent | L81-L85 | |
dc.identifier | http://dx.doi.org/10.1093/mnrasl/sly100 | |
dc.identifier.citation | Monthly Notices of the Royal Astronomical Society: Letters, v. 479, n. 1, p. L81-L85, 2018. | |
dc.identifier.doi | 10.1093/mnrasl/sly100 | |
dc.identifier.issn | 1745-3933 | |
dc.identifier.issn | 1745-3925 | |
dc.identifier.scopus | 2-s2.0-85053111383 | |
dc.identifier.uri | http://hdl.handle.net/11449/186878 | |
dc.language.iso | eng | |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society: Letters | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Scopus | |
dc.subject | Planet-disc interactions | |
dc.subject | Planets and satellites: composition | |
dc.subject | Planets and satellites: dynamical evolution and stability | |
dc.subject | Planets and satellites: formation | |
dc.subject | Protoplanetary discs | |
dc.title | Migration-driven diversity of super-Earth compositions | en |
dc.type | Artigo |