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Astron. Astrophys. 358, 462-470 (2000)
Hard X-rays emitted by starbursts as predicted by population synthesis models including a realistic fraction of interacting binaries
J. Van Bever and
D. Vanbeveren
Vrije Universiteit Brussel, Astrophysical Institute, Pleinlaan 2, 1050 Brussels, Belgium (jvbever@vub.ac.be; dvbevere@vub.ac.be)
Received 27 August 1999 / Accepted 15 December 1999
Abstract
We combine our close binary population number synthesis code with the formation mechanism of X-radiation in young supernova remnants and in high mass X-ray binaries, to predict the hard X-ray luminosity emitted by starbursts. We demonstrate that the impact of interacting binaries is substantial. Therefore, observations of hard X-rays with energies larger than 2 keV of starburst regions may highlight the importance of close binary evolution in understanding properties of active starformation regions.
Key words: stars: binaries:
close 
ISM: supernova
remnants
galaxies:
starburst
galaxies: stellar
content
X-rays: stars
Send offprint requests to: J. Van Bever
Contents
- 1. Introduction
- 2. The population synthesis model
- 3. The population of hard X-ray emitters
- 4. Results and discussion
- 5. Application: the WR galaxy Henize 2-10
- Acknowledgements
- References
© European Southern Observatory (ESO) 2000
Online publication: June 8, 2000
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