Dynamical relaxation and the orbits of low-mass extrasolar planets

Details Dynamical relaxation and the orbits of low-mass extrasolar planets Dynamical relaxation and the orbits of low-mass extrasolar planets

2002-03-12

arxiv.org/abs/astro-ph/0203187v1

Mon.Not.Roy.Astron.Soc. 332 (2002) L39

Astronomy and Astrophysics

Astrophysics

6 pages including 6 figures, Latex in the MN style - Accepted by MNRAS Letters

Scientific paper

10.1046/j.1365-8711.2002.05493.x

We consider the evolution of a system containing a population of massive planets formed rapidly through a fragmentation process occurring on a scale on the order of 100 au and a lower mass planet that assembles in a disc on a much longer timescale. During the formation phase, the inner planet is kept on a circular orbit due to tidal interaction with the disc, while the outer planets undergo dynamical relaxation. Interaction with the massive planets left in the system after the inner planet forms may increase the eccentricity of the inner orbit to high values, producing systems similar to those observed.

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