Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The difficult early stages of embedded star clusters and the importance
  of the pre-gas expulsion virial ratio   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.

0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
21
The categories of this paper are: adap-org
23
The categories of this paper are: solv-int
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol