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Observations of Wolf-Rayet Binaries

Published online by Cambridge University Press:  14 August 2015

Virpi S. Niemela
Virpi S. Niemela*
Affiliation:
51 esq. 11, Villa Elisa, Buenos Aires, Argentina

Extract

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In many recent papers dealing with computations of evolutionary sequences for massive stars with mass loss, the evolutionary status of Wolf- Rayet stars has been discussed. When one whishes to compare these theoretical computations with observations, it is of great importance to know the masses of Wolf-Rayet stars, which unfortunately are well determined only in a few cases. Estimates of the masses are provided by binaries with WR type components. I will report here preliminary results of spectrographic observations for 4 WN+OB systems, with new information about the masses of their components.

Type
IV. Massive Binary Systems
Information
Symposium - International Astronomical Union , Volume 88: Close Binary Stars: Observations and Interpretation , 1980 , pp. 177 - 180
Copyright
Copyright © Reidel 1980 

References

Moffat, A.F.J. and Seggewiss, W.: 1979, in IAU Symp. No. 83, eds. Conti, P.S. and de Loore, C.W.H., p.447.CrossRefGoogle Scholar
Munch, G.: 1950, Astrophys.J. 112, p. 226.CrossRefGoogle Scholar
Niemela, V.S.: 1976, Astrophys. and Space Sci. 45, p. 191.CrossRefGoogle Scholar