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ROSAT observation of the HII region RCW 49 Possible discovery of a new Wolf-Rayet ring nebula

Published online by Cambridge University Press:  07 August 2017

S. Mereghetti  and
T. Belloni
S. Mereghetti
Affiliation:
Istituto di Fisica Cosmica, Milano, Italy
T. Belloni
Affiliation:
Astronomical Institute Anton Pannekoek, Amsterdam, The Netherlands

Abstract

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We have observed the southern HII region RCW 49 with the ROSAT PSPC instrument. Part of the diffuse X-ray and optical emission present in this region might be associated with the X-ray selected WR star Th35-42 (WR20c). The young star cluster Westerlund 2 (which contains WR20a) is seen in X-rays as a centrally peaked, resolved source, surrounded by fainter diffuse emission.

Type
Session I - Basic parameters, properties of single Wolf-Ray et stars
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 76 - 77
Copyright
Copyright © Kluwer 1995 

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