SIMBAD references

2006AJ....131..990C - Astron. J., 131, 990-993 (2006/February-0)

W Ursae Majoris contact binary variables as X-ray sources.

CHEN W.P., SANCHAWALA K. and CHIU M.C.

Abstract (from CDS):

We present cross-identification of archived ROSAT X-ray point sources with W UMa variable stars found in the All-Sky Automated Survey. A total of 34 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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Journal keyword(s): Stars: Binaries: Close - Stars: Activity - Stars: General - Stars: Rotation - X-Rays: Binaries

Nomenclature: Table 1: [CSC2006] NN (Nos 1-34).

Simbad objects: 42

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