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Keplerian masses for the most massive stars: the very luminous, hydrogen-rich Wolf-Rayet stars

Published online by Cambridge University Press:  01 August 2006

Anthony F. J. Moffat ,
Olivier Schnurr ,
André-Nicolas Chené ,
Jules Casoli ,
Nicole St-Louis  and
Alfredo Villar-Sbaffi
Anthony F. J. Moffat
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. C-V, Montréal, QC, H3C 3J7, Canada email: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
Olivier Schnurr
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. C-V, Montréal, QC, H3C 3J7, Canada email: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
André-Nicolas Chené
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. C-V, Montréal, QC, H3C 3J7, Canada email: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
Jules Casoli
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. C-V, Montréal, QC, H3C 3J7, Canada email: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
Nicole St-Louis
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. C-V, Montréal, QC, H3C 3J7, Canada email: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
Alfredo Villar-Sbaffi
Affiliation:
Département de physique, Université de Montréal, C.P. 6128, Succ. C-V, Montréal, QC, H3C 3J7, Canada email: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected]
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Abstract

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We propose that the most massive stars in the local Universe start out on the main sequence being extremely luminous and already exhibiting wind-like emission lines. Such stars can probably be identified as hydrogen-rich WN5-7 stars. Masses are now being determined for these stars using the least model-dependent technique of binary orbits.

Keywords

Binaries: spectroscopicstars: early-typefundamental parametersstars: Wolf-Rayet
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Highlights of Astronomy 14: Highlights of Astronomy , August 2006 , pp. 197
Copyright
Copyright © International Astronomical Union 2007

References

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