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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 

References

Leitherer, C., Chapman, J.S., Koribalski, B. 1995, ApJ 450, 289 Google Scholar
Leitherer, C., Chapman, J.S., Koribalski, B. 1997, ApJ 481, 898 Google Scholar
Neimela, V.S., Shara, M.M., Wallace, D.J., Zurek, D.R., Moffat, A.F.J. 1998, AJ 115, 2047 CrossRefGoogle Scholar
van der Hucht, K.A. 1999, The 7th Catalogue of Galactic Wolf-Rayet Stars, in preparation Google Scholar
Williams, P.M., van der Hucht, K.A., Pollock, A.M.T., Florkowski, D.R., van der Woerd, H., Wamsteker, W.M. 1990a, MNRAS 243, 662 Google Scholar
Williams, P.M., van der Hucht, K.A., Sandell, G., The, P.S., 1990b, MNRAS 244, 101 Google Scholar
Williams, P.M., Dougherty, S.M., Davis, R.J. van der Hucht, K.A., Bode, M.F., Setia Gunawan, D.Y.A. 1997, MNRAS 289, 10 Google Scholar