A 6 centimeter radio survey of short-period active binary stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Binary Stars, Centimeter Waves, Radio Stars, Stellar Activity, Astronomical Catalogs, Flux Quantization, Stellar Luminosity

Scientific paper

Thirteen binaries with periods in the range of 0.2-2.0 days have been observed at 6 cm wavelength with the VLA. Eight out of these thirteen systems were detected, of which seven are RS Canum Venaticorum systems and one is an Algol system, with observed fluxes in the range of 0.3-5.0 mJy. The individual characteristics of the detected sources are briefly discussed. As a group, relative to active binaries of longer orbital periods, the short-period active binaries have a slightly lower mean radio luminosity. There is also a clear correlation of high radio luminosity with high X-ray luminosity evident in these short-period systems, although a functional dependence cannot be determined from noncontemporary data.

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