Hostname: page-component-8448b6f56d-m8qmq Total loading time: 0 Render date: 2024-04-24T05:01:57.803Z Has data issue: false hasContentIssue false
  • English
  • Français

Can Pulsational Instabilities Impact a Massive Star's Rotational Evolution?

Published online by Cambridge University Press:  01 December 2007

Rich Townsend  and
Jim MacDonald
Rich Townsend
Affiliation:
Bartol Research Institute, University of Delaware, Newark, DE 19716, USA email : rhdt@bartol.udel.edu Department of Physics & Astronomy, University of Delaware, Newark, DE 19716, USA email : jimmacd@udel.edu
Jim MacDonald
Affiliation:
Department of Physics & Astronomy, University of Delaware, Newark, DE 19716, USA email : jimmacd@udel.edu
Rights & Permissions [Opens in a new window]

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 investigate whether angular momentum transport due to unstable pulsation modes can play a significant role in the rotational evolution of massive stars. We find that these modes can redistribute appreciable angular momentum, and moreover trigger shear-instability mixing in the molecular weight gradient zone adjacent to stellar cores, with significant evolutionary impact.

Keywords

stars: early-type – stars: rotation – stars: oscillations – stars: variables: other – instabilities – waves – methods: numerical
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S250: Massive Stars as Cosmic Engines , December 2007 , pp. 161 - 166
Copyright
Copyright © International Astronomical Union 2008

References

Ando, H. 1986, A&A, 163, 97Google Scholar
Baglin, A., Michel, E., Auvergne, M., & The COROT Team, 2006, in: Thompson, M. (ed.), SOHO 18/GONG 2006/HELAS I: Beyond the spherical Sun, p. 34Google Scholar
Balona, L. A. & Dziembowski, W. A. 1999, MNRAS, 309, 221CrossRefGoogle Scholar
Dziembowski, W. A., Moskalik, P., & Pamyatnykh, A. A. 1993, MNRAS, 265, 588CrossRefGoogle Scholar
Dziembowski, W. A. & Pamyatnykh, A. A. 1993, MNRAS, 262, 204Google Scholar
Eddington, A. S. 1926, The Internal Constitution of the Stars (Cambridge: CUP)Google Scholar
Fullerton, A. W., Gies, D. R., & Bolton, C. T. 1996, ApJS, 103, 475CrossRefGoogle Scholar
Fullerton, A. W., Massa, D. L., Prinja, R. K., et al. 1997, A&A, 327, 699Google Scholar
Kaufer, A., Stahl, O., Prinja, R. K., & Witherick, D. 2006, A&A, 447, 325Google Scholar
Maeder, A. & Meynet, G. 1996 A&A, 313, 140Google Scholar
Maeder, A. & Meynet, G. 2000, ARA&A, 38, 143Google Scholar
Massa, D., Fullerton, A. W., Nichols, J. S., et al. 1995, ApJ, 452, L53Google Scholar
Pamyatnykh, A. A. 1999, Acta Astronomica, 49, 119Google Scholar
Talon, S. & Charbonnel, C. 2003, A&A, 405, 1025Google Scholar
Talon, S. & Charbonnel, C. 2005, A&A, 440, 981Google Scholar
Townsend, R. H. D. 2005, MNRAS, 360, 465Google Scholar
Waelkens, C., Aerts, C., Kestens, E., et al. 1998, A&A, 330, 215Google Scholar
Walker, G., Matthews, J., Kuschnig, R., et al. 2003, PASP, 115, 1023CrossRefGoogle Scholar
Zahn, J.-P., 1992, A&A, 265, 115Google Scholar