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Formation of Giant Planets- An Attempt in Matching Observational Constraints

Alibert, Yann ; Mordasini, Christoph ; Mousis, Olivier ; Benz, Willy

In: Space Science Reviews, 2005, vol. 116, no. 1-2, p. 77-95

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    Titre
    • Formation of Giant Planets- An Attempt in Matching Observational Constraints
    Auteur
    • Alibert, Yann. Physikalisches Institut, University of Bern, CH-3012, Bern, Switzerland
    • Mordasini, Christoph. Physikalisches Institut, University of Bern, CH-3012, Bern, Switzerland
    • Mousis, Olivier. Physikalisches Institut, University of Bern, CH-3012, Bern, Switzerland
    • Benz, Willy. Physikalisches Institut, University of Bern, CH-3012, Bern, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Space Science Reviews, 2005, vol. 116, no. 1-2, p. 77-95. Kluwer Academic Publishers
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:312543
    Summary
    We present models of giant planet formation, taking into account migration and disk viscous evolution. We show that migration can significantly reduce the formation timescale bringing it in good agreement with typical observed disk lifetimes. We then present a model that produces a planet whose current location, core mass and total mass are comparable with the one of Jupiter. For this model, we calculate the enrichments in volatiles and compare them with the one measured by the Galileo probe. We show that our models can reproduce both the measured atmosphere enrichments and the constraints derived by Guillot et al. (2004), if we assume the accretion of planetesimals with ices/rocks ratio equal to 4, and that a substantial amount of CO2 was present in vapor phase in the solar nebula, in agreement with ISM measurements