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Revised Wolf-Rayet binary orbits and new binaries

Published online by Cambridge University Press:  07 August 2017

V.S. Niemela
V.S. Niemela*
Affiliation:
Instituto de Astronomía y Física del Espacio, Buenos Aires, Argentina

Abstract

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Revised orbits are presented for the double-lined binary WR+O systems HD 63099 (WR9) and HDE 320102 (WR97). The orbit derived for WR9 from OVI emission and HeII absorptions is considerably different from that previously published based on the CIVΛ4658 emission line velocities. WR97 is found to have a period of 12.6 days and small minimum masses, probably due to a low orbital inclination. Two stars in our Galaxy, WR30a and WR70, and two in the Magellanic Clouds, Brey44 and AB7, show radial velocity variations of emission and absorption lines in opposite sense. Although no periods are yet available, preliminary values of the mass ratios can be estimated from the velocity variations.

Keywords

stars: binariesstars: Wolf-Rayet
Type
Session IV - Properties of Wolf-Rayet binaries
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 223 - 230
Copyright
Copyright © Kluwer 1995 

References

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