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Thresholds for the Dust Driven Mass Loss from C-rich AGB Stars

  • Lars Mattsson (a1), Rurik Wahlin (a1) and Susanne Höfner (a1)
Abstract
Abstract

It is well established that mass loss from AGB stars due to dust driven winds cannot be arbitrarily low. We model the mass loss from carbon rich AGB stars using detailed frequency-dependent radiation hydrodynamics including dust formation. We present a study of the thresholds for the mass loss rate as a function of stellar parameters based on a subset of a larger grid of such models and compare these results to previous theoretical work. Furthermore, we demonstrate the impact of the pulsation mechanism and dust formation for the creation of a stellar wind and how it affects these thresholds and briefly discuss the consequences for stellar evolution.

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References
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Arndt T.U., Fleischer A.J. & Sedlmayr E. 1997, A&A, 297, 727
Dominik C., Gail H.-P., Sedlmayr E. & Winters J.M., 1990, A&A, 240, 365
Gail H.-P. & Sedlmayr E., 1987, A&A, 177, 186
Höfner S., Gautschy-Loidl R., Aringer B. & Jørgensen U.G., 2003, A&A, 399, 589
Mattsson L., 2006, Ph. Lic. Thesis, Uppsala University
Wachter A., Schröder K.-P., Winters J.M., Arndt T.U. & Sedlmayr E., 2002, A&A, 384, 452
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Proceedings of the International Astronomical Union
  • ISSN: 1743-9213
  • EISSN: 1743-9221
  • URL: /core/journals/proceedings-of-the-international-astronomical-union
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