A search for radio emission from late-type supergiant stars

Astronomy and Astrophysics – Astronomy

Scientific paper

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Late Stars, Microwave Emission, Radio Astronomy, Stellar Radiation, Supergiant Stars, Radio Stars, Stellar Luminosity, Variable Stars

Scientific paper

Radio continuum observations at 10.5 GHz have been made of 29 high-luminosity F0-K5 supergiant stars. Two sources were detected (at the 3-sigma confidence level) in this survey. One corresponds to the unusual spectrum-variable star HR 8752=HD 217476 (G0 Ia). The other is located approximately one arc minute southwest of the star HD 18391 (G0 Ia), with a positional error box containing no obvious optical candidate(s).

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