Variable radio emission from the 4 Draconis system

Details Variable radio emission from the 4 Draconis system Variable radio emission from the 4 Draconis system

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...312l..51b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor (ISSN 0004-637X), vol. 312, Jan. 15, 1987, p. L51-L53.

Astronomy and Astrophysics

Astrophysics

5

Binary Stars, Cataclysmic Variables, Radio Stars, Red Giant Stars, Stellar Radiation, Radio Emission, Stellar Winds

Scientific paper

The 4 Dra system, which contains an M3 giant and a cataclysmic binary, has been detected as a 6 cm radio source with the VLA. This radio emission is variable on time scales of weeks to months. A number of possible sources of the radio emission within the 4 Dra system are considered, and the observed time variability probably rules out optically thick free-free emission from the wind of the M3 giant as the dominant source. The major source of the observed radio emission is likely to be either the cataclysmic binary or shocked regions due to the interaction between the cataclysmic binary and the red giant wind.

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