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The ROSAT view of the massive eclipsing O-type binary system 29 UW Canis Majoris

Published online by Cambridge University Press:  07 August 2017

Thomas W. Berghöfer  and
Jürgen H. M. M. Schmitt
Thomas W. Berghöfer
Affiliation:
Max-Planck-Institut für extraterrestrische Physik Postfach 1603, D-85740 Garching, B.R. Deutschland
Jürgen H. M. M. Schmitt
Affiliation:
Max-Planck-Institut für extraterrestrische Physik Postfach 1603, D-85740 Garching, B.R. Deutschland

Abstract

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We have investigated a recently obtained ROSAT X-ray observation of the massive binary 29 UW Canis Majoris (HR 2781; HD 57060). This short-period binary (4.3934 d) consists of two eclipsing O-type stars and has been observed for about 9 days with the ROSAT PSPC. We discuss the origin of the X-ray emission in the close binary system 29 CMa in the context of the traditional colliding wind scenario as well as the scenario of X-ray emission from shock heated gas in the stellar winds.

Keywords

stars: early-typebinariesX-raysstars individual: 29 UW CMa
Type
Session VII - Hydrodynamics and high-energy physics of colliding winds
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 382 - 387
Copyright
Copyright © Kluwer 1995 

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