Hostname: page-component-586b7cd67f-2plfb Total loading time: 0 Render date: 2024-11-28T22:52:21.031Z Has data issue: false hasContentIssue false
  • English
  • Français

New Radiation Driven Wind Solutions Including Stellar Rotation: Applicability to Be stars

Published online by Cambridge University Press:  12 April 2016

Michel Curé
Michel Curé*
Affiliation:
Departamento de Física y Meteorologia, Universidad de Valparaíso, Chile

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.

The theory of radiative-line driven wind including stellar rotation is re-examined. After a suitable change of variables, new analytical equations for the mass loss rate and position of the critical point are derived. A non-linear equation for the position of the critical point is obtained, in order to solve it, a β-field is used, and in addition to the standard CAK critical point two other critical points as function of star’s rotational speed (Vϕ) are founded. When the stellar rotation velocity is approximate or greater than 0.8 × Vbreak–up, the CAK critical point is located far away in the wind (r > 4R*) and there we have again only one critical point. Numerical solutions from this new critical point are obtained, they have very low terminal velocities (approx. 400 km/sec). The applicability of this new solution in the frame of Be stars are discussed.

Type
6. Disks
Information
International Astronomical Union Colloquium , Volume 175: The Be Phenomenon in Early-Type Stars , 2000 , pp. 636 - 639
Copyright
Copyright © Astronomical Society of the Pacific 2000

References

Castor, J.I., Abbott, D.C., Klein, R. 1975, ApJ 195, 157 CrossRefGoogle Scholar
Friend, D., Abbott, D.C. 1986, ApJ 311, 701 CrossRefGoogle Scholar
Curé, M. 1999, ApJ submittedGoogle Scholar
Kudritzki, R.P., Pauldrach, A., Puls, J., Abbott, D.C. 1989, A&A 219, 205 Google Scholar
Pauldrach, A., Puls, J., Kudritzki, R.P.: 1986, A&A 164, 86 Google Scholar
Poe, C., Friend, D. 1986, ApJ 311, 317 Google Scholar