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Two Classes of Hot Jupiters

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 10 Dec 2007Embargo end date: 01 Jan 2007 English Publisher:American Astronomical SocietyJournal:The Astrophysical Journal, volume 671, pages 861-871 (issn: 0004-637X, eissn: 1538-4357,

Authors: Travis S. Barman; Brad M. S. Hansen;

doi: 10.1086/523038 , 10.48550/arxiv.0706.3052

arXiv: http://arxiv.org/abs/0706.3052

Two Classes of Hot Jupiters

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Abstract

We identify two classes of transiting planet, based on their equilibrium temperatures and Safronov numbers. We examine various possible explanations for the dichotomy. It may reflect the influence of planet or planetesimal scattering in determining when planetary migration stops. Another possibility is that some planets lose more mass to evaporation than others. If this evaporation process preferentially removes Helium from the planet, the consequent reduction in the mean molecular weight may explain why some planets have anomalously large radii.

35 pages, 16 figures in Preprint format. Submitted to ApJ

Related Organizations

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Keywords

Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics

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	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 1%