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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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References

Abbott, D.C., 1982, Astrophys. J., 259, 282.Google Scholar
Abbott, D.C. and Conti, P. S., 1987, Annu. Rev. Astron. Astrophys., 25, 113.Google Scholar
Barlow, M. J., Smith, L. J. and Willis, A. J., 1981, Mon. Not. R. Astr. Soc., 196, 101.Google Scholar
Castor, J. I., Abbott, D. C., and Klein, R. I., 1975, Astrophys. J., 195, 157.CrossRefGoogle Scholar
Chiosi, C., 1982, IAU Symp. 99, Wolf-Rayet Stars, (eds. De Loore, C. W. H. and Willis, A. J.), p. 323.Google Scholar
Kurucz, R. L., 1979, Astrophys. J. Suppl. Ser., 40, 1.Google Scholar
Maeder, A., 1982, Astron. Astrophys., 105, 149.Google Scholar
Nussbaumer, H., Schmutz, W., Smith, L. J. and Willis, A. J., 1982, Astron. Astrophys. Suppl. Ser., 47, 257.Google Scholar
Underhill, A. B., 1980, Astrophys. J., 239, 220.Google Scholar
Underhill, A. B., 1983, Astrophys. J., 266, 718.CrossRefGoogle Scholar
Van der Hucht, K. A., Cassinelii, J. P., Wesselius, P. R. and Wu, C. C., 1979, Astron. Astrophys. Suppl. Ser., 38, 279.Google Scholar
Willis, A. J., 1982, IAU Symp. 99, Wolf-Rayet Stars, (eds. De Loore, C. W. H. and Willis, A. J.), p. 27.Google Scholar
Willis, A. J. and Wilson, R., 1978, Mon. Not. R. Astr. Soc., 182, 559.Google Scholar
Woo, J. O., 1987, Observational Astrophysics with High Precision Data, Institut d’Astrophysique, Université de Liège, Belgium, p. 273.Google Scholar