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| Paper: |
Gas Expulsion from Star Forming Regions and the Formation of Globular Clusters |
| Volume: |
230, Galaxy Disks and Disk Galaxies |
| Page: |
311 |
| Authors: |
Geyer, M. P.; Burkert, A. |
| Abstract: |
The effect of gas ejection on the structure and binding energy of newly formed stellar clusters is investigated using numerical N-body and combined N-body and smoothed particle hydrodynamics (SPH) simulations. If the system is in virial equilibrium initially, bound clusters only form in regions where the local star formation efficiency (SFE) is high, or where the gas expulsion timescale is long compared to the dynamical timescale. A small initial velocity dispersion of the stars leads to a compaction of the cluster and reduces the SFE needed to form bound clusters to less than 10%. |
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