Hostname: page-component-857557d7f7-ksgrx Total loading time: 0 Render date: 2025-11-22T19:17:56.221Z Has data issue: false hasContentIssue false
  • English
  • Français

Pulsation-Driven Winds from High Luminosity Stars

Published online by Cambridge University Press:  15 August 2009

M. Goupil ,
Z. Kolláth ,
N. Nardetto ,
P. Kervella  and
E.A. Dorfi
E.A. Dorfi*
Affiliation:
Institut für Astronomie, Türkenschanzstr. 17, 1180 Wien, Austria
Get access

Abstract

Based on 1-dimensional numerical simulations including the rotational acceleration in a quasi-spherical approximation we present pulsation-driven mass loss from luminous stars. In particular, forour model WN8 with M = 60 M๏, L = 8×105 L๏ and Teff = 25 000 Kwith a rotation rate of v sin i = 160 km s-1 given at the stellar photosphere of Rp = 47.6 R๏ and a stellar pulsation of P = 4.144 days we compute a time-dependent mass loss with an averaged rate of1.28×10-4 M๏/yr. Further implications of such theoreticalmodels are briefly discussed for observations of variable stars with large amplitudes.

Information

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 38: Nonlinear Pulsations and Hydrodynamics of Cepheids , 2009 , pp. 157 - 162
Copyright
© EAS, EDP Sciences, 2009

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

Bohannan, B., 1997, In Luminous Blue Variables: Massive Stars in Transition, ed. A. Nota and H.J.G.L.M. Lamers, ASP, 120, 3
Crowther, P.A., 1997, In Luminous Blue Variables: Massive Stars in Transition, ed. A. Nota and H.J.G.L.M. Lamers, ASP, 120, 51
Dorfi, E.A., & Gautschy, A., 2000, ApJ, 545, 982 CrossRef
Dorfi, E.A., Pikall, H., Stökl, A., & Gautschy, A., 2006, Comp. Phys. Comm., 174, 771 CrossRef
Glatzel, W., & Kiriakidis, M., 1998, MNRAS, 295, 251 CrossRef
Kippenhahn, R., Meyer-Hofmeister, E., & Thomas, H.C., 1970, A&A, 5, 155
Ledoux, P., 1945, ApJ, 102, 143 CrossRef
Leitherer, C., 1997, In Luminous Blue Variables: Massive Stars in Transition, ed. A. Nota and H.J.G.L.M. Lamers, ASP, 120, 58
Mihalas, D., & Mihalas, B.W., 1984, In Foundations of Radiation Hydrodynamics (Oxford University Press, New York)
Nota, A., Lamers, H.J.G.L.M. (eds.), 1997, In Luminous Blue Variables: Massive Stars in Transition, ASP, 120, San Francisco
Schaller, G., Schaerer, D., Meynet, G., & Maeder, A., 1992, A&AS, 96, 266 PubMed
Stothers, R.B., & Chin, C.-W., 1993, ApJ, 408, L85 CrossRef
Stothers, R.B., & Chin, C.-W., 1994, ApJ, 426, L43 CrossRef