Hostname: page-component-77c89778f8-vsgnj Total loading time: 0 Render date: 2024-07-21T23:19:21.087Z Has data issue: false hasContentIssue false
  • English
  • Français

The dynamics of Wolf-Rayet winds

Published online by Cambridge University Press:  07 August 2017

Stanley P. Owocki  and
Kenneth G. Gayley
Stanley P. Owocki
Affiliation:
Bartol Research Institute, University of Delaware, Newark, DE 19716, U.S.A.
Kenneth G. Gayley
Affiliation:
Bartol Research Institute, University of Delaware, Newark, DE 19716, U.S.A.

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We review the dynamics of Wolf-Rayet stellar winds, with emphasis on how multi-line scattering can lead to mass loss rates for which the wind's radial momentum flux Ṁv∞ greatly exceeds the limit for single-scattering of the star's radiative momentum L*/c. The geometrical considerations that allow this to occur are illuminated through connections to multiple scattering in an effectively gray medium. The so-called “WR wind momentum problem” would be better characterized as an “opacity problem” of simply identifying a sufficiently dense ensemble of optically thick lines.

Keywords

stars: Wolf-Rayetwindsmodel atmosphere
Type
Session II - Model atmospheres for single Wolf-Rayet stars
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 138 - 146
Copyright
Copyright © Kluwer 1995 

References

Abbott, D.C., Lucy, L.B. 1985, ApJ 679, 693 Google Scholar
Castor, J.I., Abbott, D.C., Klein, R.I. 1975, ApJ 195, 157 (CAK) Google Scholar
Friend, D.B., Castor, J.I. 1983, ApJ 272, 259 (FC) Google Scholar
Gayley, K.G., Owocki, S.P., Cranmer, S.R. 1994, ApJ in press Google Scholar
Gayley, K.G., Owocki, S.P. 1994, ApJ submitted Google Scholar
Hamann, W.-R., Koesterke, L., Wesselowski, U. 1993, A&A 274, 397 Google Scholar
Kato, M., Iben, I. 1992, ApJ 394, 305 Google Scholar
Lucy, L.B., Abbott, D.C. 1993, ApJ 405, 738 (LA) Google Scholar
Moffat, A.F.J., Lepine, S., Henriksen, R.N., Robert, C. 1994, in: Kinematics and Dynamics of Diffuse Astrophysical Media, Ap. & Sp. Sc. in press Google Scholar
Netzer, N., Elitzur, M. 1993, ApJ 410, 701 Google Scholar
Panagia, N. and Macchetto, F. 1982, A&A 106, 266 Google Scholar
Robert, C. 1991, Ph.D. Thesis, Univ. de Montreal Google Scholar
Schmutz, W., Hamann, W.-R., Wessolowski, U. 1989, A&A 210, 236 Google Scholar
Springmann, U. 1994, A&A in press Google Scholar
Willis, A.J. 1991, in: van der Hucht, K.A. & Hidayat, B. (eds.), Wolf-Rayet Stars and Interrelations with Other Massive Stars in Galaxies, Proc. IAU Symp. No. 143 (Dordrecht: Kluwer), p. 265 Google Scholar