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Line profile variations in WR + collapsed companion systems

Published online by Cambridge University Press:  07 August 2017

Gloria Koenigsberger
Gloria Koenigsberger*
Affiliation:
Institute de Astronomía, UNAM, Mexico

Abstract

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The existence of Wolf-Rayet binary systems containing a collapsed companion is predicted on evolutionary grounds. However, because of the absence of strong X-ray emission and the difficulty in obtaining consistent periodicities from the observed variations, none of the “classical” WR stars has been shown to be a WR+cc system. A discussion is presented of the line-profile variations which are predicted to occur on orbital timescales due to the interaction of the WR wind with the cc. We note the importance of numerical simulations of the flow structure of the WR wind in the vicinity of a collapsed companion for deriving diagnostic tools for the presence of a cc in a WR system.

Keywords

stars: Wolf-Rayetbinariesline profilesindividual: HD 50896
Type
Session VIII - Hydrodynamics and high-energy physics of winds accreting on neutrons stars and black holes
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 538 - 546
Copyright
Copyright © Kluwer 1995 

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