Journal Article

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

Richard J. Parker and Simon P. Goodwin

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 397, issue 2, pages 1041-1045
Published in print August 2009 | ISSN: 0035-8711
Published online July 2009 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2009.15037.x
The role of cluster evolution in disrupting planetary systems and discs: the Kozai mechanism

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We examine the effects of dynamical evolution in clusters on planetary systems or protoplanetary discs orbiting the components of binary stars. In particular, we look for evidence that the companions of host stars of planetary systems or discs could have their inclination angles raised from zero to between the threshold angles (39.23° and 140.77°) 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.

Keywords: methods: N-body simulations; stars: formation; planetary systems; open clusters and associations: general

Journal Article.  3398 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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