Planetary dynamics in stellar clusters

Ian Alexander Bonnell, Kester W Smith, Melvyn B Davies, Keith Douglas Horne

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74 Citations (Scopus)

Abstract

We investigate how the formation and evolution of extrasolar planetary systems can be affected by stellar encounters that occur in the crowded conditions of a stellar cluster. Using plausible estimates of cluster evolution, we show how planet formation may be suppressed in globular clusters while planets wider than greater than or similar to0.1 au that do form in such environments can be ejected from their stellar system. Less crowded systems such as open clusters have a much reduced effect on any planetary system. Planet formation is unaffected in open clusters and only the wider planetary systems will be disrupted during the cluster's lifetime. The potential for free-floating planets in these environments is also discussed.

Original languageEnglish
Pages (from-to)pp.859-865.
Number of pages7
JournalMonthly Notices of the Royal Astronomical Society
Volume322
Issue number4
Publication statusPublished - 21 Apr 2001

Keywords

  • stellar dynamics
  • stars : formation
  • planetary systems
  • ORION NEBULA CLUSTER
  • GLOBULAR-CLUSTERS
  • STAR
  • EVOLUTION
  • ENCOUNTERS

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