Mean-Motion Resonances of High Order in Extrasolar Planetary Systems

Details Mean-Motion Resonances of High Order in Extrasolar Planetary Systems Mean-Motion Resonances of High Order in Extrasolar Planetary Systems

2009-10-23

arxiv.org/abs/0910.4546v1

EAS Publications Series, Volume 42, 2010, pp.299-302

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

To appear in Proceedings: Extrasolar Planets in Multi-body Systems: Theory and Observations; Editors K. Gozdziewski, A. Niedzi

Scientific paper

10.1051/eas/1042033

Many multi-planet systems have been discovered in recent years. Some of them are in mean-motion resonances (MMR). Planet formation theory was successful in explaining the formation of 2:1, 3:1 and other low resonances as a result of convergent migration. However, higher order resonances require high initial orbital eccentricities in order to be formed by this process and these are in general unexpected in a dissipative disk. We present a way of generating large initial eccentricities using additional planets. This procedure allows us to form high order MMRs and predict new planets using a genetic N-body code.

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