X-rays from old star clusters
Astrophysics
2007-05-23 v1
Abstract
A brief overview is given of X-ray observations of old clusters. Most X-ray sources in old open clusters are interacting binaries, formed via evolution of a primordial binary, and emitting X-rays because of magnetic activity; however, a sizable fraction of the cluster sources is not well understood, including some of the most luminous ones. Globular clusters appear to contain fewer magnetically active X-ray sources than expected if one scales from old open clusters by mass.
Keywords
Cite
@article{arxiv.astro-ph/9907202,
title = {X-rays from old star clusters},
author = {Frank Verbunt},
journal= {arXiv preprint arXiv:astro-ph/9907202},
year = {2007}
}
Comments
10 pages, 6 figures, to be published in: Stellar clusters and associations: Convection, Rotation, and Dynamos, ed. R. Pallavicini, ASP Conf. Ser