HD 193793, a radio-emitting Wolf-Rayet binary star

Astronomy and Astrophysics – Astronomy

Scientific paper

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Binary Stars, Hot Stars, Radio Emission, Stellar Models, Wolf-Rayet Stars, Centimeter Waves, Decimeter Waves, Infrared Astronomy, Mass Flow, Radio Astronomy, Time Lag

Scientific paper

The Wolf-Rayet binary HD 193793 has been observed as a weak unresolved radio source. The observed flux densities do not agree with the predictions of the constant-mass-flow model of Wright and Barlow (1975) and Panagia and Felli (1975). A variable-mass-flow model is suggested and an observational test is proposed. A comparison with Gamma-2 Vel is made, and the parameters affecting radio emission from Wolf-Rayet stars are briefly discussed.

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