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HST-WFPC2 observations of Galactic Wolf-Rayet stars, preliminary results

Published online by Cambridge University Press:  25 May 2016

Debra J. Wallace
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Michael M. Shara
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA
Anthony F.J. Moffat
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. Centre-Ville, Montréal H3C 3J7, Canada
Virpi S. Niemela
Affiliation:
Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional, Paseo del Bosque s/n, 1900 La Plata, Argentina

Extract

We present preliminary results of our HST-WFPC2 pc-survey of Wolf-Rayet stars. Initiated in 1996, the goal was to discover new companions to, and cluster/association memberships of, known Galactic WR stars. From these results, Niemela et al. (1998) have already established a firm link between non-thermal radio emission and the location of binary wind-collision zones for WR 146 (confirming radio data of Dougherty et al. 1996) and WR 147 (confirming radio and IR data of Williams et al. 1997; see also Williams, these Proceedings), and confirmed the presence of a binary companion for WR 86 (listed by Jeffers et al. 1963). Here, for the first time, we present new information on WR38, WR38a, and WR 104.

Type
Part 1. Basic observational properties of Wolf-Rayet stars and other hot massive stars
Copyright
Copyright © Astronomical Society of the Pacific 1999 

References

Dougherty, S.M., Williams, P.M., van der Hucht, K.A., Bode, M.F., Davis, R.J. 1996, MNRAS 280, 963 CrossRefGoogle Scholar
Jeffers, H.M., van den Bos, W.H., Greeby, F.M. 1963, Index Catalog of Visual Double Stars, Publ. Lick. Obs., No. 21 Google Scholar
van der Hucht, K.A., Conti, P.S., Lundström, I., Stenholm, B. 1981, SSR 28, 227 CrossRefGoogle Scholar
Niemela, V.S., Shara, M.M., Wallace, D.J., Zurek, D.R., Moffat, A.F.J. 1998, AJ 115, 2047 CrossRefGoogle Scholar
Shara, M.M., Smith, L.F., Potter, M., Moffat, A.F.J. 1991, AJ 102, 716 CrossRefGoogle Scholar
Williams, P.M., Dougherty, S.M., Davis, R.J., van der Hucht, K.A., Bode, M.F., Setia Gunawan, D.Y.A. 1997, MNRAS 289, 10 CrossRefGoogle Scholar
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