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SUMMARY:Effects of crowdedness on planetary systems containing planets on 
 wide orbits - Davies\, M (Lund)
DTSTART:20091110T151000Z
DTEND:20091110T153000Z
UID:TALK21409@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:We consider the effects of high stellar number densities on pl
 anetary systems containing planets on relatively wide orbits. In crowded p
 laces such as young stellar clusters\, a large fraction of stars will expe
 rience close encounters with passing stars\, or exchange into binaries. Fl
 y-bys can induce instabilities within planetary systems\, whilst companion
  stars can change the eccentricity of planetary orbits via the Kozai mecha
 nism. Planets on wider orbits will generally be more vulnerable to such ef
 fects. Here we consider the survival chances of wide planetary systems as 
 a function of stellar cluster properties (mass and radius of cluster).
LOCATION:Satellite
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