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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 

References

Belloni, T., Mereghetti, S. 1994, A&A 286, 935 Google Scholar
Castor, J., McCray, R., Weaver, R. 1975, ApJ (Letters) 200, L107 Google Scholar
Caswell, J.L., Haynes, R.F. 1987, A&A 171, 261 Google Scholar
Chu, Y.-H., Treffers, R.R., Kwitter, K.B. 1983, ApJ Suppl. 53, 937 Google Scholar
Goldwurm, A., Caraveo, P.A., Bignami, G.F. 1987, ApJ 332, 349 Google Scholar
Mereghetti, S., Belloni, T., Shara, M.M., Drissen, L. 1994, ApJ 424, 943 Google Scholar
Moffat, A.F.J., Shara, M.M., Potter, M. 1991, AJ 102, 642 CrossRefGoogle Scholar
Moffat, A.F.J., Vogt, N. 1975, A&A Suppl. 20, 125 Google Scholar
Rodgers, A.W., Campbell, C.T., Whiteoak, J.B. 1960, MNRAS 121, 103 CrossRefGoogle Scholar
Shara, M.M., Moffat, A.F.J., Smith, L.F., Potter, M. 1991, AJ 102, 716 Google Scholar