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WSRT 21-cm continuum field in Cygnus OB2: in search of more Wolf-Rayet stars

Published online by Cambridge University Press:  25 May 2016

Diah Y.A. Setia Gunawan
Affiliation:
Kapteyn Astronomical Institute, RU Groningen, the Netherlands Space Research Organization Netherlands, Utrecht, the Netherlands
Karel A. van der Hucht
Affiliation:
Space Research Organization Netherlands, Utrecht, the Netherlands
A. Ger de Bruyn
Affiliation:
Kapteyn Astronomical Institute, RU Groningen, the Netherlands Netherlands Foundation for Research in Astronomy, Dwingeloo, the Netherlands
Peredur M. Williams
Affiliation:
Royal Observatory, Edinburgh, United Kingdom

Abstract

We present a deep look into the Cygnus OB2 region using the WSRT. A 2° x 2° map of the optically highly-obscured region was obtained at 1400 MHz, with a noise level down to 0.2 mJy and an angular resolution of 1″. We will compare the resulting radio point source list with optical and near-IR catalogues, in order to identify stellar wind sources like WR and OB stars.

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
Niemela, V.S., Shara, M.M., Wallace, D.J., Zurek, D.R., Moffat, A.F.J. 1998, AJ 115, 2047 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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WSRT 21-cm continuum field in Cygnus OB2: in search of more Wolf-Rayet stars
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