Composition of Ices in Low-Mass Extrasolar Planets
EHRENREICH, D.
Institut d'Astrophysique de Paris [IAP]
Laboratoire d'Astrophysique de Grenoble [LAOG]
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Institut d'Astrophysique de Paris [IAP]
Laboratoire d'Astrophysique de Grenoble [LAOG]
EHRENREICH, D.
Institut d'Astrophysique de Paris [IAP]
Laboratoire d'Astrophysique de Grenoble [LAOG]
Institut d'Astrophysique de Paris [IAP]
Laboratoire d'Astrophysique de Grenoble [LAOG]
ALIBERT, Yann
Laboratoire d'astrophysique de l'observatoire de Besançon (UMR 6091) [LAOB]
Centre de Recherche Astrophysique de Lyon [CRAL]
Laboratoire d'astrophysique de l'observatoire de Besançon (UMR 6091) [LAOB]
Centre de Recherche Astrophysique de Lyon [CRAL]
WAKELAM, Valentine
Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
Observatoire aquitain des sciences de l'univers [OASU]
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
Department of Physics
Department of Physics, The Ohio State University
Department of Physics [OSU]
Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux [L3AB]
Observatoire aquitain des sciences de l'univers [OASU]
Laboratoire d'Astrophysique de Bordeaux [Pessac] [LAB]
Department of Physics
Department of Physics, The Ohio State University
Department of Physics [OSU]
BEAULIEU, J.-P.
Institut d'Astrophysique de Paris [IAP]
Natural Resources Canada [NRCan]
Institut Méditerranéen d'Ecologie et de Paléoécologie [IMEP]
< Reduce
Institut d'Astrophysique de Paris [IAP]
Natural Resources Canada [NRCan]
Institut Méditerranéen d'Ecologie et de Paléoécologie [IMEP]
Language
en
Article de revue
This item was published in
The Astrophysical Journal. 2008, vol. 681, p. 1624-1630
American Astronomical Society
English Abstract
We study the formation conditions of icy planetesimals in protoplanetary disks in order to determine the composition of ices in small and cold extrasolar planets. Assuming that ices are formed from hydrates, clathrates, ...Read more >
We study the formation conditions of icy planetesimals in protoplanetary disks in order to determine the composition of ices in small and cold extrasolar planets. Assuming that ices are formed from hydrates, clathrates, and pure condensates, we calculate their mass fractions with respect to the total quantity of ices included in planetesimals, for a grid of disk models. We find that the composition of ices weakly depends on the adopted disk thermodynamic conditions, and is rather influenced by the initial composition of the gas phase. The use of a plausible range of molecular abundance ratios and the variation of the relative elemental carbon over oxygen ratio in the gas phase of protoplanetary disks allow us to apply our model to a wide range of planetary systems. Our results can thus be used to constrain the icy/volatile phase composition of cold planets evidenced by microlensing surveys, hypothetical ocean planets, and carbon planets, which could be detected by COROT or Kepler.Read less <
English Keywords
Stars: Planetary Systems
Stars: Planetary Systems: Formation
Origin
Hal imported