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2001MNRAS.325..449S - Mon. Not. R. Astron. Soc., 325, 449-456 (2001/August-1)
Destruction of protoplanetary discs in the Orion Nebula Cluster.
SCALLY A. and CLARKE C.
Abstract (from CDS):
We also present statistics on the distribution of minimum stellar encounter separations. This peaks at 1000au, with only about 4 per cent of stars having had an encounter closer than 100au at the cluster's present age, and less than 10 per cent after 107yr. We conclude that stellar encounters are unlikely to play a significant role in destroying protoplanetary discs. In the absence of any disruption mechanism other than those considered here, we would thus predict planetary systems like our own to be common amongst stars forming in ONC-like environments.
Also, although almost all stars will have experienced an encounter at the radius of the Oort cloud in our own system, this only places a firm constraint on the possible birthplace of the Sun if the Oort cloud formed in situ, rather than through the secular ejection of matter from the planetary zone.
Abstract Copyright: The Royal Astronomical Society
Journal keyword(s): accretion, accretion discs - stellar dynamics - Solar system: formation - planetary systems - open clusters and associations: individual: Orion Nebula Cluster
Simbad objects: 3
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