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Discrepancies between observational and theoretical parameters for three O-type binaries

Published online by Cambridge University Press:  25 May 2016

Laura R. Penny ,
Douglas R. Gies  and
W.G. Bagnuolo Jr
Laura R. Penny
Affiliation:
Department of Physics and Astronomy, College of Charleston, Charleston, SC 29424, USA
Douglas R. Gies
Affiliation:
CHARA and Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30303, USA
W.G. Bagnuolo Jr
Affiliation:
CHARA and Department of Physics and Astronomy, Georgia State University, Atlanta, GA 30303, USA

Abstract

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Here we present fundamental parameters (masses, spectral classifications, rotational velocities) obtained from a combination of spectroscopic and photometric orbital solutions for the O-type binary systems HD 152248, HD 149404, and HD 135240. We also present estimated masses derived from theoretical single star evolutionary tracks for these same stars. In all cases the evolutionary masses are larger than those derived from observations.

Type
Part 1. Basic observational properties of Wolf-Rayet stars and other hot massive stars
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 86 - 87
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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