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The Light Elements Be and B as Stellar Chronometers in the Early Galaxy

Published online by Cambridge University Press:  25 May 2016

Timothy C. Beers ,
Takeru K. Suzuki  and
Yuzuru Yoshii
Timothy C. Beers
Affiliation:
Michigan State University, Dept. of Physics & Astronomy, E. Lansing, MI 48824 USA
Takeru K. Suzuki
Affiliation:
University of Tokyo, Dept. of Astronomy, School of Science, University of Tokyo; Theoretical Astrophysics Division, National Astronomical Observatory, Mitaka, Tokyo, 181-8588 Japan
Yuzuru Yoshii
Affiliation:
University of Tokyo, Institute of Astronomy, School of Science, University of Tokyo, Mitaka, Tokyo, 181-8588 Japan; Research Center for the Early Universe, School of Science, University of Tokyo Japan

Abstract

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Recent detailed simulations of Galactic Chemical Evolution have shown that the heavy elements, in particular [Fe/H], are expected to exhibit a weak, or absent, correlation with stellar ages in the early Galaxy due to the lack of efficient mixing of interstellar material enriched by individual Type II supernovae. A promising alternative ‘chronometer’ of stellar ages is suggested, based on the expectation that the light elements Be and B are formed primarily as spallation products of Galactic Cosmic Rays.

Type
5. Abundance of Beryllium and Boron
Information
Symposium - International Astronomical Union , Volume 198: The Light Elements and their Evolution , 2000 , pp. 425 - 431
Copyright
Copyright © Astronomical Society of the Pacific 2000 

References

Argast, D., Samlund, M., Gerhard, O.E., & Thielemann, F.-K. 2000, A&A, in press Google Scholar
Audouze, J., & Silk, J. 1995, ApJ, 451, L49 CrossRefGoogle Scholar
Beers, T.C. 1999, in Third Stromlo Symposium: The Galactic Halo, eds. Gibson, B., Axelrod, T., & Putman, M., (ASP, San Francisco), 165, p. 206 Google Scholar
Boesgaard, A.M., Deliyannis, C.P., King, J.R., Ryan, S.G., Vogt, S.S., & Beers, T.C. 1999, AJ, 117, 1549 Google Scholar
Fuhrmann, K. 2000, in The First Stars, Proceedings of the Second MPA/ESO Workshop, eds. Weiss, A., Abel, T., & Hill, V. (Springer, Heidelberg), in press Google Scholar
Laird, J.B., Carney, B.W., Rupen, M.P., & Latham, D.W. 1988, AJ, 96, 1908 Google Scholar
McWilliam, A., Preston, W., Sneden, C., & Searle, L. 1995, AJ, 109, 2757 Google Scholar
Ryan, S.G., Norris, J.E., & Beers, T.C. 1996, ApJ, 471, 254 Google Scholar
Ryan, S.G., Norris, J.E., & Beers, T.C. 1999, ApJ, 523, 654 CrossRefGoogle Scholar
Ryan, S.G., & Norris, J.E. 1991, AJ, 101, 1865 CrossRefGoogle Scholar
Suzuki, T.K., Yoshii, Y., & Kajino, T. 1999, ApJ, 522, L125 (SYK) Google Scholar
Suzuki, T.K., Yoshii, Y., & Beers, T.C. 2000, ApJ, submitted Google Scholar
Tsujimoto, T., Shigeyama, T., & Yoshii, Y. 1999, ApJ, 519, L63 (TSY) Google Scholar
Yoshii, Y., Mathews, G.J., & Kajino, T. 1995, ApJ, 447, 184 Google Scholar