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SUMMARY:Turning solar systems into extrasolar planetary systems - Davies\,
  M (Lund)
DTSTART:20090820T094000Z
DTEND:20090820T100000Z
UID:TALK19476@talks.cam.ac.uk
CONTACT:Mustapha Amrani
DESCRIPTION:Many stars are formed in some form of cluster or association. 
 These environments can have a much higher number density of stars than the
  field of the galaxy. Such crowded places are hostile environments: a larg
 e fraction of initially single stars will undergo close encounters with ot
 her stars or exchange into binaries. We describe how such close encounters
  and exchange encounters will affect the properties of a planetary system 
 around a single star. We define singletons as single stars which have neve
 r suffered close encounters with other stars or spent time within a binary
  system. It may be that planetary systems similar to our own solar system 
 can only survive around singletons. Close encounters or the presence of a 
 stellar companion will perturb the planetary system\, leading to strong pl
 anet-planet interactions\, often leaving planets on tighter and more eccen
 tric orbits. Thus\, planetary systems which initially resembled our own so
 lar system may later more closely resemble the observed extrasolar planeta
 ry systems.
LOCATION:Seminar Room 1 Newton Institute
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