Hostname: page-component-78c5997874-g7gxr Total loading time: 0 Render date: 2024-11-19T11:45:00.292Z Has data issue: false hasContentIssue false
  • English
  • Français

An X-ray survey of Wolf-Rayet stars in the Magellanic Clouds

Published online by Cambridge University Press:  26 May 2016

Martín A. Guerrero Roncel  and
You-Hua Chu
Martín A. Guerrero Roncel
Affiliation:
Department of Astronomy, University of Illinois at Champaign-Urbana, 1002 West Green Street, Urbana, IL 61801, USA
You-Hua Chu
Affiliation:
Department of Astronomy, University of Illinois at Champaign-Urbana, 1002 West Green Street, Urbana, IL 61801, USA

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We have used archival Chandra-acis observations to search for X-ray emission from WR stars in the Magellanic Clouds (MCs), where the low interstellar absorption and known distances make it easy to compare X-ray luminosities with spectral types and binary status of WR stars. We have detected X-ray emission from ~20 WR stars in the MCs with X-ray luminosities of 6.6×1032-1.4×1035 ergs s–1. The analysis of the X-ray spectra of the brightest sources indicates that the X-ray emitting gas has temperatures ≥ 1.0×107 K, as expected in colliding winds. We will compare these results with the binary status of the WR stars to determine the amounts of the X-ray emission produced in the colliding winds for WR stars in binary systems and to assess the X-ray emission from single WR stars.

Type
Part 4. Feedback from Massive Stars
Information
Symposium - International Astronomical Union , Volume 212: A Massive Star Odyssey: From Main Sequence to Supernova , 2003 , pp. 718 - 719
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Breysacher, J., Azzopardi, M., Testor, G. 1999, A&AS 137, 117.Google Scholar
Foellmi, C., Moffat, A.F.J., Guererro, M.A. 2003a, MNRAS 338, 360.CrossRefGoogle Scholar
Foellmi, C., Moffat, A.F.J., Guererro, M.A. 2003b, MNRAS 338, 1025.CrossRefGoogle Scholar
Massey, P., Duffy, A.S. 2001, ApJ 550, 713.CrossRefGoogle Scholar