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Chemical Evolution of Heavy Elements in the Early Galaxy: Implications for Stellar Sources

Published online by Cambridge University Press:  05 March 2013

Yong-Zhong Qian
Yong-Zhong Qian*
Affiliation:
School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, USA. Email: [email protected]
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Abstract

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An overview of the sources for heavy elements in the early Galaxy is given. It is shown that observations of abundances in metal-poor stars can be used along with a basic understanding of stellar models to guide the search for the source of the heavy r-process nuclei (r-nuclei). Observations show that this source produces very little of the elements from C through Zn, including Fe. This strongly suggests that O–Ne–Mg core-collapse supernovae (SNe) from progenitors of ∼8–11 M⊙ are the source for the heavy r-nuclei. It is shown that a two-component model based on the abundances of Fe (from Fe core-collapse SNe) and Eu (from O–Ne–Mg core-collapse SNe) gives very good quantitative predictions for the abundances of all the other elements in metal-poor stars.

Keywords

Galaxy: evolutionnuclear reactions, nucleosynthesis, abundancesstars: Population IIsupernovae: general
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 25 , Issue 1 , 2008 , pp. 36 - 43
Copyright
Copyright © Astronomical Society of Australia 2008

References

Aoki, W. et al., 2005, ApJ, 632, 611 Google Scholar
Argast, D., Samland, M., Thielemann, F.-K. & Qian, Y.-Z., 2004, A&A, 416, 997 Google Scholar
Arlandini, C., Käppeler, F., Wisshak, K., Gallino, R., Lugaro, M., Busso, M. & Straniero, O., 1999, ApJ, 525, 886 Google Scholar
Barklem, P. S. et al., 2005, A&A, 439, 129 Google Scholar
Cayrel, R. et al., 2004, A&A, 416, 1117 Google Scholar
Chieffi, A. & Limongi, M., 2004, ApJ, 608, 405 Google Scholar
Cowan, J. J. et al., 2002, ApJ, 572, 861 Google Scholar
Cowan, J. J. et al., 2005, ApJ, 627, 238 Google Scholar
Crawford, J. L., Sneden, C., King, J. R., Boesgaard, A. M. & Deliyannis, C. P., 1998, AJ, 116, 2489 Google Scholar
Freiburghaus, C., Rosswog, S. & Thielemann, F.-K., 1999, ApJ, 525, L121 Google Scholar
Freiburghaus, C. et al., 1999, ApJ, 516, 381 Google Scholar
Fröhlich, C. et al., 2006a, ApJ, 637, 415 Google Scholar
Fröhlich, C. et al., 2006b, PhRvL, 96, 142502Google Scholar
Fuller, G. M. & Meyer, B. S., 1995, ApJ, 453, 792 Google Scholar
Hill, V. et al., 2002, A&A, 387, 560 Google Scholar
Hoffman, R. D., Woosley, S. E. & Qian, Y.-Z., 1997, ApJ, 482, 951 Google Scholar
Honda, S., Aoki, W., Ishimaru, Y., Wanajo, S. & Ryan, S. G., 2006, ApJ, 643, 1180 Google Scholar
Ishimaru, Y. & Wanajo, S., 1999, ApJ, 511, L33 Google Scholar
Ivans, I. I., Simmerer, J., Sneden, C., Lawler, J. E., Cowan, J. J., Gallino, R. & Bisterzo, S., 2006, ApJ, 645, 613 Google Scholar
Johnson, J. A. & Bolte, M., 2002, ApJ, 579, 616 Google Scholar
Kitaura, F. S., Janka, H.-T. & Hillebrandt, W., 2006, A&A, 450, 345 Google Scholar
Mathews, G. J., Bazan, G. & Cowan, J. J., 1992, ApJ, 391, 719 Google Scholar
Mayle, R. & Wilson, J. R., 1988, ApJ, 334, 909 Google Scholar
McLaughlin, G. C. & Surman, R., 2005, NuPhA, 758, 189 Google Scholar
Meyer, B. S. & Brown, J. S., 1997, ApJS, 112, 199 Google Scholar
Meyer, B. S., Mathews, G. J., Howard, W. M., Woosley, S. E. & Hoffman, R. D., 1992, ApJ, 399, 656 Google Scholar
Meynet, G., Ekström, S. & Maeder, A., 2006, A&A, 447, 623 Google Scholar
Ning, H., Qian, Y.-Z. & Meyer, B. S., 2007, ApJ, 667, L159 Google Scholar
Nomoto, K., 1984, ApJ, 277, 791 Google Scholar
Nomoto, K., 1987, ApJ, 322, 206 Google Scholar
Otsuki, K., Honda, S., Aoki, W., Kajino, T. & Mathews, G. J., 2006, ApJ, 641, L117 Google Scholar
Pruet, J., Woosley, S. E. & Hoffman, R. D., 2003, ApJ, 586, 1254 Google Scholar
Pruet, J., Woosley, S. E., Buras, R., Janka, H. T. & Hoffman, R. D., 2005, ApJ, 623, 325 Google Scholar
Pruet, J., Hoffman, R. D., Woosley, S. E., Janka, H. T. & Buras, R., 2006, ApJ, 644, 1028 Google Scholar
Qian, Y.-Z., 2000, ApJ, 534, L67 Google Scholar
Qian, Y.-Z. & Wasserburg, G. J., 2002, ApJ, 567, 515 Google Scholar
Qian, Y.-Z. & Wasserburg, G. J., 2003, ApJ, 588, 1099 Google Scholar
Qian, Y.-Z. & Wasserburg, G. J., 2007, PhR, 442, 237 Google Scholar
Qian, Y.-Z. & Woosley, S. E., 1996, ApJ, 471, 331 Google Scholar
Qian, Y.-Z., Fuller, G. M., Mathews, G. J., Mayle, R. W., Wilson, J. R. & Woosley, S. E., 1993, PhRvL, 71, 1965 Google Scholar
Ritossa, C., García-Berro, E. & Iben, I Jr., 1999, ApJ, 515, 381 Google Scholar
Sneden, C. et al., 2003, ApJ, 591, 936 Google Scholar
Takahashi, K., Witti, J. & Janka, H.-T., 1994, A&A, 286, 857 Google Scholar
Thompson, T. A., 2003, ApJ, 585, L33 Google Scholar
Thompson, T. A., Burrows, A. & Meyer, B. S., 2001, ApJ, 562, 887 Google Scholar
Tominaga, N., Umeda, H. & Nomoto, K., 2007, ApJ, 660, 516 Google Scholar
Wanajo, S., 2006, ApJ, 647, 1323 Google Scholar
Wanajo, S. & Ishimaru, Y., 2006, NuPhA, 777, 676 Google Scholar
Wanajo, S., Tamamura, M., Itoh, N., Nomoto, K., Ishimaru, Y., Beers, T. C. & Nozawa, S., 2003, ApJ, 593, 968 Google Scholar
Westin, J., Sneden, C., Gustafsson, B. & Cowan, J. J., 2000, ApJ, 530, 783 Google Scholar
Wheeler, J. C., Cowan, J. J. & Hillebrandt, W., 1998, ApJ, 493, L101 Google Scholar
Witti, J., Janka, H.-T. & Takahashi, K., 1994, A&A, 286, 841 Google Scholar
Woosley, S. E. & Baron, E., 1992, ApJ, 391, 228 Google Scholar
Woosley, S. E. & Hoffman, R. D., 1992, ApJ, 395, 202 Google Scholar
Woosley, S. E. & Weaver, T. A., 1995, ApJS, 101, 181 Google Scholar
Woosley, S. E., Wilson, J. R., Mathews, G. J., Hoffman, R. D. & Meyer, B. S., 1994, ApJ, 433, 229 Google Scholar