Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985azh....62..491r&link_type=abstract
(Astronomicheskii Zhurnal, vol. 62, May-June 1985, p. 491-499) Soviet Astronomy (ISSN 0038-5301), vol. 29, May-June 1985, p. 285
Astronomy and Astrophysics
Astronomy
2
Celestial Mechanics, Interstellar Gas, Star Clusters, Stellar Evolution, Stellar Motions, Inelastic Scattering, Mass Ratios, Radii, Rotating Disks, Systems Stability
Scientific paper
The dynamics of a gas-star disk embedded in a dense, mildly oblate (flattening epsilon is less than about 0.3) star cluster is investigated at the stage when inelastic, contact collisions have come into play. The time variation of the disk radius within the evolving cluster is calculated. As the cluster contracts, the disk will shrink, contracting faster than the cluster throughout most of the system's evolution. The disk parameters at the threshold of Ostriker-Peebles instability are determined. If epsilon is less than about 0.1, the ratio of the disk mass at instability to the total cluster mass will be equal to about 0.6 epsilon exp 3.4; for larger epsilon the mass ratio will be equal to about epsilon, and if epsilon is greater than about 0.2-0.3 the stable disk will survive for at least half the cluster evolution time. The possibility of a thin disk of stars existing inside a dense star cluster is considered. For small epsilon and for disk member stars having greater than about 0.04 the mass of the cluster members, collisions between cluster and disk stars will have no effect on the disk evolution prior to instability.
No associations
LandOfFree
The evolution of rotating star clusters at the inelastic-collision stage. II - Dynamics of a disk of gas and stars does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The evolution of rotating star clusters at the inelastic-collision stage. II - Dynamics of a disk of gas and stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The evolution of rotating star clusters at the inelastic-collision stage. II - Dynamics of a disk of gas and stars will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1664001