The dynamical evolution of young clusters and galactic implications
天体物理学
2007-05-23 v1
摘要
Star clusters are observed to form in a highly compact state and with low star-formation efficiencies. If the residual gas is expelled on a dynamical time the clusters disrupt thereby (i) feeding a hot kinematical stellar component into their host-galaxy's field population, and (ii) if the gas-evacuation time-scale depends on cluster mass, then a power-law embedded-cluster mass function transforms within ten to a few dozen Myr to a mass function with a turnover near 10^5 M_sun, thereby possibly explaining this universal empirical feature.
引用
@article{arxiv.astro-ph/0605072,
title = {The dynamical evolution of young clusters and galactic implications},
author = {Pavel Kroupa},
journal= {arXiv preprint arXiv:astro-ph/0605072},
year = {2007}
}
备注
4 pages, to appear in the proceedings of "Globular Clusters: Guides to Galaxies", Concepcion, Chile, March 6th-10th, 2006, eds Tom Richtler et al. (Springer)