Contact Binary Variables as X-ray Sources

Details Contact Binary Variables as X-ray Sources Contact Binary Variables as X-ray Sources

2005-08-30

arxiv.org/abs/astro-ph/0508632v1

Astronomy and Astrophysics

Astrophysics

10 pages, 2 figures, 1 table; submitted to AJ

Scientific paper

10.1086/499206

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.

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