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The difficult early stages of embedded star clusters and the importance of the pre-gas expulsion virial ratio
- Publication Year :
- 2015
-
Abstract
- We examine the effects of gas-expulsion on initially substructured distributions of stars. We perform N-body simulations of the evolution of these distributions in a static background potential to mimic the gas. We remove the static potential instantaneously to model gas-expulsion. We find that the exact dynamical state of the cluster plays a very strong role in affecting a cluster's survival, especially at early times: they may be entirely destroyed or only weakly affected. We show that knowing both detailed dynamics and relative star-gas distributions can provide a good estimate of the post-gas expulsion state of the cluster, but even knowing these is not an absolute way of determining the survival or otherwise of the cluster.<br />Comment: 9 pages, 4 figures. Accepted for publication in MNRAS
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1504.02474
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1093/mnras/stv790