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Non-thermal radio emission in Wolf-Rayet stars: is binarity a pre-requisite?

Published online by Cambridge University Press:  25 May 2016

Sean M. Dougherty
Sean M. Dougherty*
Affiliation:
University of Calgary/Dominion Radio Astrophysical Observatory NRC, P.O. Box 248, Penticton, B.C., Canada V2A 6K3

Abstract

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Radio observations of Wolf-Rayet stars currently available in the literature are examined to determine whether binarity is a common feature of WR systems with non-thermal emission. Among 24 stars with observed spectral index values, seven are definite non-thermal emitters, and six others possibly have composite thermal/non-thermal spectra. Stellar companions have been identified in 71% of the non-thermal emitters, strongly supporting a link between non-thermal emission and binarity.

Type
Part 3. Interaction of Wolf-Rayet stars and other hot massive stars with their environment: colliding winds and ring nebulae
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 348 - 349
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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