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Formation of Massive Stars by Growing Accretion

Published online by Cambridge University Press:  30 March 2016

André Maeder
André Maeder*
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland

Abstract

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We calculate pre-Main Sequence evolutionary tracks with accretion rates growing with the actual stellar masses. We show that accretion rates growing at least as M1.5 are necessary to fit the constraints on the lifetimes and HR diagram. Most interestingly, such accretion rates growing with the stellar mass well correspond to those derived from observations of mass outflows (Churchwell 2000; Henning et al. 2000). These rates also lie in the permitted region of the dynamical models.

Type
II. Joint Discussions
Information
Highlights of Astronomy , Volume 12: Highlights of Astronomy. As presented at the XXIVth General Assembly of the IAU, 2000 , 2002 , pp. 170 - 172
Copyright
Copyright © Astronomical Society of Pacific 2002

References

Beech, M, Mitalas, R. 1994, ApJS, 95, 517 Google Scholar
Bernasconi, P.A., Maeder, A. 1996, A&A, 307, 829 Google Scholar
Bonnell, I.A., Bate, M.R., Zinnecker, H. 1998, MNRAS, 298, 93 Google Scholar
Caselli, R, Myers, P.C. 1995, ApJ, 446, 665 Google Scholar
Churchwell, E. 2000 in Unsolved Problems in Stellar Evolution, Space Telescope. Sci. Inst. Symp. Ser., vol 12, Ed. Livio, M., Cambridge Univ. Press, 41.Google Scholar
Elmegreen, B. 2000, astro-ph/0005189Google Scholar
Henning, Th., Schreyer, K., Launhardt, R., et al. 2000, A&A, 353, 211 Google Scholar
Nakano, T. 1989, ApJ, 345, 464 Google Scholar
Norberg, P., Maeder, A. 2000, A&A, 359, 1025 Google Scholar
Wolfire, M.G., Cassinelli, J.P. 1987, ApJ, 319, 850 Google Scholar