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Estimation of Mass-loss Rates for Some Galactic Wolf Rayet Stars

Published online by Cambridge University Press:  25 April 2016

Jong Ok Woo
Jong Ok Woo*
Affiliation:
Department of Earth Science Education, Korea National University of Education, Korea
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Abstract

The absolute measurements of flux emitted in the visible continua of some Galactic Wolf-Rayet stars were carried out by means of a two-channel scanner. The measurements lead to the determination of stellar angular diameters which enable us to compute log L*/L⊙. The stellar wind terminal velocity, V∞ was obtained from the empirical relation of the effective temperatures by Underbill (1983) and V∞, adopted from the work of Willis (1982). Also, we derived the rate of mass loss for the WR stars from the formula Ṁ = є(Teff)L/(V∞c) by using the obtained effective temperatures, luminosity and V∞ in this work. The values of the rates range from 1.4 × 10−5 to 5.8 × 10−5M⊙yr−1.

Type
Galactic and Stellar
Information
Publications of the Astronomical Society of Australia , Volume 9 , Issue 2 , 1991 , pp. 275 - 276
Copyright
Copyright © Astronomical Society of Australia 1991

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