The dynamical evolution of young clusters and galactic implications

Details The dynamical evolution of young clusters and galactic implications The dynamical evolution of young clusters and galactic implications

2006-05-02

arxiv.org/abs/astro-ph/0605072v1

Astronomy and Astrophysics

Astrophysics

4 pages, to appear in the proceedings of "Globular Clusters: Guides to Galaxies", Concepcion, Chile, March 6th-10th, 2006, eds

Scientific paper

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.

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