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X-ray emission from Wolf-Rayet stars: Pointed ROSAT PSPC observations of nine single WN stars

Published online by Cambridge University Press:  07 August 2017

U. Wessolowski ,
W.-R. Hamann ,
L. Koesterke ,
D. J. Hillier  and
J. Puls
U. Wessolowski
Affiliation:
Institut für Theoretische Physik und Sternwarte der Universität Olshausenstraße 40, D-24098 Kiel, B.R. Deutschland
W.-R. Hamann
Affiliation:
Institut für Theoretische Physik und Sternwarte der Universität Olshausenstraße 40, D-24098 Kiel, B.R. Deutschland
L. Koesterke
Affiliation:
Institut für Theoretische Physik und Sternwarte der Universität Olshausenstraße 40, D-24098 Kiel, B.R. Deutschland
D. J. Hillier
Affiliation:
Department of Physics & Astronomy, University of Pittsburgh, PA, U.S.A.
J. Puls
Affiliation:
Institut für Astronomie & Astrophysik, Universitätssternwarte München, B.R.D.

Abstract

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Results from pointed ROSAT PSPC observations of nine single WN-type Wolf-Rayet stars are presented. Spectra of sufficient quality were obtained for two of them (WR1, WR110). The long exposure (35.5 ksec) X-ray spectrum of WR1 is more closely investigated with a semi-empirical model developed by Baum et al. (1992).

Type
Session II - Model atmospheres for single Wolf-Rayet stars
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 174 - 175
Copyright
Copyright © Kluwer 1995 

References

Baum, E., Hamann, W.-R., Koesterke, L., Wessolowski, U. 1992, A&A 266, 402 Google Scholar
Pollock, A.M.T. 1987, ApJ 320, 283 Google Scholar