Radio observations of W Ursae Majoris stars

Details Radio observations of W Ursae Majoris stars Radio observations of W Ursae Majoris stars

Mar 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984apj...278..716h&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 278, March 15, 1984, p. 716-720. Research supported by the Natural Sciences

Astronomy and Astrophysics

Astronomy

24

Eclipsing Binary Stars, Radio Astronomy, Radio Stars, Stellar Radiation, Chromosphere, Flux Density, Giant Stars, Radio Bursts, Stellar Coronas, Stellar Flares, Ultraviolet Astronomy, X Ray Astronomy

Scientific paper

Radio observations, principally with the VLA at lambda = 6 cm, were made of 12 W UMa stars consisting of eight W-type and four A-type systems. On January 6, 1983, VW Cep was recorded at approximately 0.5 mJy; it subsequently increased to approximately 5 mJy over a two hour period. On January 13, the radio flux level had returned to approximately 0.5 mJy. The flare on VW Cep was at least 100 times less intense than has been observed from RS CVn stars, and injection of material into the chromosphere and corona is proposed as effecting the low-level enhanced background emission. During August, 1982, V502 Oph appeared to consist of two sources, which is suggested as indicating a mass loss from a red giant interacting with its companion, though no companion has been observed.

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