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Preliminary results from XMM-Newton observations of the massive Wolf-Rayet binary WR 22 (WN7H+O9III-V)

Published online by Cambridge University Press:  26 May 2016

Eric Gosset ,
Gregor Rauw ,
Jean-Marie Vreux ,
Yaël Nazé ,
Igor I. Antokhin  and
Hugues Sana
Eric Gosset
Affiliation:
Institut d'Astrophysique et de Géophysique, Université de Liège, 17 Allée du 6 août, B-4000 Liège 1 (Sart-Tilman), la Belgique
Gregor Rauw
Affiliation:
Institut d'Astrophysique et de Géophysique, Université de Liège, 17 Allée du 6 août, B-4000 Liège 1 (Sart-Tilman), la Belgique
Jean-Marie Vreux
Affiliation:
Institut d'Astrophysique et de Géophysique, Université de Liège, 17 Allée du 6 août, B-4000 Liège 1 (Sart-Tilman), la Belgique
Yaël Nazé
Affiliation:
Institut d'Astrophysique et de Géophysique, Université de Liège, 17 Allée du 6 août, B-4000 Liège 1 (Sart-Tilman), la Belgique
Igor I. Antokhin
Affiliation:
Institut d'Astrophysique et de Géophysique, Université de Liège, 17 Allée du 6 août, B-4000 Liège 1 (Sart-Tilman), la Belgique
Hugues Sana
Affiliation:
Institut d'Astrophysique et de Géophysique, Université de Liège, 17 Allée du 6 août, B-4000 Liège 1 (Sart-Tilman), la Belgique

Abstract

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We present preliminary results from observations of the massive WR+O binary WR 22 performed with the XMM-Newton observatory. The star is brighter in the X-ray domain near apastron and fainter at periastron. The change in brightness is very progressive and mainly corresponds to a lowering of the soft part of the spectrum.

Type
Part 1. Atmospheres of Massive Stars
Information
Symposium - International Astronomical Union , Volume 212: A Massive Star Odyssey: From Main Sequence to Supernova , 2003 , pp. 188 - 189
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

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