On the collapse and violent relaxation of protoglobular clusters

Details On the collapse and violent relaxation of protoglobular clusters On the collapse and violent relaxation of protoglobular clusters

Jan 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...324..288a&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 324, Jan. 1, 1988, p. 288-310. NASA-supported research.

Statistics

Computation

46

Computational Astrophysics, Globular Clusters, Gravitational Collapse, Molecular Relaxation, Star Formation, Stellar Evolution, Many Body Problem, Stellar Magnitude, Stellar Mass, Stellar Structure, Velocity Distribution

Scientific paper

During the formation of stellar systems such as globular clusters, low-mass subcondensations which eventually form stars must retain a geometric size throughout the collapse process that is small compared to the characteristic distance separating them. If the local velocity dispersion of the subcondensations is small, the overall dimension of the system can decrease substantially before reaching a dynamical equilibrium state. The maximum collapse factor is deduced by examining the growth of the velocity dispersion and the spread in arrival times at the origin caused by local and global fluctuations. It is shown, analytically as well as in a series of N-body simulations, that the maximum reduction in the characteristic dimension of a system of N fragments with an initial homogeneous distribution subject to N exp 1/2 fluctuations is proportional to N exp 1/3. Direct physical collisions between low-mass subcondensations are therefore unlikely to occur in protoglobular clusters. The results are discussed in the context of fragmentation and violent relaxation.

Affiliated with

Also associated with

No associations

Rating

On the collapse and violent relaxation of protoglobular clusters 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 On the collapse and violent relaxation of protoglobular clusters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the collapse and violent relaxation of protoglobular clusters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1044833