The role of cluster evolution in disrupting planetary systems and disks: the Kozai mechanism

Details The role of cluster evolution in disrupting planetary systems and disks: the Kozai mechanism The role of cluster evolution in disrupting planetary systems and disks: the Kozai mechanism

2009-05-06

arxiv.org/abs/0905.0815v2

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

5 pages, 4 figures, accepted for publication in MNRAS. References updated

Scientific paper

We examine the effects of dynamical evolution in clusters on planetary systems or protoplanetary disks orbiting the components of binary stars. In particular, we look for evidence that the companions of host stars of planetary systems or disks could have their inclination angles raised from zero to between the threshold angles (39.23 degrees and 140.77 degrees) that can induce the Kozai mechanism. We find that up to 20 per cent of binary systems have their inclination angles increased to within the threshold range. Given that half of all extrasolar planets could be in binary systems, we suggest that up to 10 per cent of extrasolar planets could be affected by this mechanism.

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