Dark Matter in Globular Clusters
天体物理学
2007-05-23 v1
摘要
We first review reasons why dark matter is an interesting issue in connection with star clusters. Next we consider to what extent the presence of dark matter is consistent with their dynamics and structure. We review various model-dependent and model-independent methods which have been applied to two well studied clusters, NGC 6397 and 47 Tuc. We suggest that about half of the mass in each object is still unobserved, possibly in the form of a mixture of low-mass stars and white dwarfs.
引用
@article{arxiv.astro-ph/9511115,
title = {Dark Matter in Globular Clusters},
author = {Douglas C. Heggie and Piet Hut},
journal= {arXiv preprint arXiv:astro-ph/9511115},
year = {2007}
}
备注
10 pages in uuencoded compressed postscript; to appear in P. Hut and J. Makino, eds, Dynamical Evolution of Star Clusters - Confrontation of Theory and Observations, Proc. IAU Symposium 174