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Populations of WC and WN stars in Wolf-Rayet galaxies: new constraints on starburst parameters

Published online by Cambridge University Press:  25 May 2016

Thierry Contini ,
Daniel Schaerer  and
Daniel Kunth
Thierry Contini
Affiliation:
European Southern Observatory, Garching, Germany
Daniel Schaerer
Affiliation:
Observatoire Midi-Pyrénées, Toulouse, France
Daniel Kunth
Affiliation:
Institut d'Astrophysique de Paris, France

Abstract

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Detection and analysis of Wolf-Rayet star populations in young starbursts is a powerful tool to reveal the properties of the star-forming events. We present new high S/N optical spectra of a sample of well-known WR galaxies, in which we detected for the first time the spectral signature of WC stars. The detailed comparison of WN and WC star populations derived in these galaxies, with the most recent model predictions, allows us to put tight constraints on starburst parameters, such as the age and duration of the burts, and the IMF.

Type
Part 5. Wolf-Rayet stars and other massive stars in starburst galaxies: the case of Wolf-Rayet galaxies (integrated spectra)
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 578 - 586
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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