Contact Binary Variables as X-ray Sources
Astrophysics
2009-11-11 v1
Abstract
We present cross-identification of archived X-ray point sources with W UMa variable stars found in the All-Sky Automated Survey (ASAS). In a surveyed sky area of 300 square degrees of ASAS, 36 W UMa stars have been found associated with X-ray emission. We compute the distances of these W UMa systems and hence their X-ray luminosities. Our data support the "supersaturation" phenomenon seen in these fast rotators, namely that the faster a W UMa star rotates, the weaker its X-ray luminosity.
Cite
@article{arxiv.astro-ph/0508632,
title = {Contact Binary Variables as X-ray Sources},
author = {W. P. Chen and Kaushar Sanchawala and M. C. Chiou},
journal= {arXiv preprint arXiv:astro-ph/0508632},
year = {2009}
}
Comments
10 pages, 2 figures, 1 table; submitted to AJ