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On the occurrence of colliding-wind binaries in R136

Published online by Cambridge University Press:  12 May 2006

L. Norci ,
J. Hartwell  and
E. J. A. Meurs
L. Norci
Affiliation:
School of Physical Sciences, Dublin City University, Glasnevin, Dublin 9, IRL email: lno@physics.dcu.ie
J. Hartwell
Affiliation:
Dunsink Observatory, Dublin Institute for Advanced Studies, Castleknock, Dublin 15, IRL email: ejam@dunsink.dias.ie
E. J. A. Meurs
Affiliation:
Dunsink Observatory, Dublin Institute for Advanced Studies, Castleknock, Dublin 15, IRL email: ejam@dunsink.dias.ie
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Abstract

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Interpretative analyses of the X-ray emission from the giant starformation region R 136 have concluded that several colliding-wind binaries are likely to contribute to its X-ray output. Using our dedicated high-energy stellar population synthesis programme, we try to reproduce the suggested number of colliding-wind binaries. It appears that only assuming a very high binary fraction for the cluster's stellar population we can reproduce the observed X-ray luminosity distribution, if also the two most luminous sources are in fact multiple sources.

Keywords

Stars:binariesStars:X-ray
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S230: Populations of High Energy Sources in Galaxies , August 2005 , pp. 408 - 409
Copyright
2006 International Astronomical Union