Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-29T11:36:45.027Z Has data issue: false hasContentIssue false
  • English
  • Français

Observed Abundance Features and their Implications for Chemical Evolution

Published online by Cambridge University Press:  05 March 2013

Takuji Tsujimoto  and
Toshikazu Shigeyama
Takuji Tsujimoto*
Affiliation:
National Astronomical Observatory, 2-21-1 Osawa, Mitaka-shi, Tokyo 181-8588, Japan
Toshikazu Shigeyama
Affiliation:
Research Center for the Early Universe, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
*
3E-mail: taku.tsujimoto@nao.ac.jp
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 describe the star formation histories of the Milky Way dwarf spheroidal galaxy and the globular cluster ω Centauri in terms of an inhomogeneous chemical evolution model developed for the Galactic halo. The observed abundance trends seen in neutron-capture elements together with α-elements constrain our models to shed light on the histories of these nearby galaxies and ω Cen. The origin of low-α stars and a new picture of the globular cluster formation scenario induced by cloud–cloud collisions are also presented.

Keywords

globular clusters: generalglobular clusters: individual (ω Centauri)stars: abundancesgalaxies: dwarfplanetary systems
Type
Research Article
Information
Publications of the Astronomical Society of Australia , Volume 21 , Issue 2: The Fifth Workshop on Galactic Chemodynamics , 2004 , pp. 242 - 247
Copyright
Copyright © Astronomical Society of Australia 2004

References

Freeman, K. C. 1993, in ASP Conf. Ser. 48, The Globular Cluster-Galaxy Connection, eds. G. H. Smith, & J. P. Brodie (San Francisco: ASP), 608 Google Scholar
Guillot, T. 1999, Planet Space Sci., 47, 1183 Google Scholar
McWilliam, A., Preston, G. W., Sneden, C., & Searle, L. 1995, AJ, 109, 2757 Google Scholar
McWilliam, A. 1997, ARA&A, 35, 503 Google Scholar
McWilliam, A. 1998, AJ, 115, 1640 CrossRefGoogle Scholar
Norris, J. E., & Da Costa, G. S. 1995, ApJ, 447, 680 Google Scholar
Norris, J. E., Freeman, K. C., & Mighell, K. J. 1996, ApJ, 462, 241 Google Scholar
Pancino, E., Ferraro, F. R., Bellazzini, M., Piotto, G., & Zoccali, M. 2000, ApJ, 534, L83 Google Scholar
Pancino, E., Pasquini, L., Hill, V., Ferraro, F. R., & Bellazzini, M. 2002, ApJ, 568, L101 CrossRefGoogle Scholar
Pettini, M., Ellison, S. L., Steidel, C. C., Shapley, A. E., & Bowen, D. V. 2000, ApJ, 532, 65 Google Scholar
Prochaska, J. X., & Wolfe, A. M. 2002, ApJ, 566, 68 Google Scholar
Ryan, S. G., Norris, J. E., & Beers, T. C. 1996, ApJ, 471, 254 Google Scholar
Shetrone, M. D., Côté, P., & Sargent, W. L. 2001, ApJ, 548, 592 CrossRefGoogle Scholar
Shetrone, M. D., Ven, K. A., Tolstoy, E., Primas, F., Hill, V., & Kaufer, A. 2003, AJ, 125, 684 Google Scholar
Shigeyama, T., & Tsujimoto, T. 1998, ApJ, 507, L135 Google Scholar
Smith, V. V., Suntzeff, N. B., Cunha, K., Gallino, R., Busso, M., Lambert, D. L., & Straniero, O. 2000, AJ, 119, 1239 Google Scholar
Suntzeff, N. B., & Kraft, R. P. 1996, AJ, 111, 1913 Google Scholar
Timmes, F. X., Woosley, S. E., & Weaver, T. A. 1995, ApJS, 98, 617 CrossRefGoogle Scholar
Tinsley, B. M. 1980, Fund. Cosmic Phys., 5, 287 Google Scholar
Tsujimoto, T., Nomoto, K., Yoshii, Y., Hashimoto, M., Yanagida, S., & Thielemann, F.-K. 1995, MNRAS, 277, 945 Google Scholar
Tsujimoto, T., & Shigeyama, T. 1998, ApJ, 508, L151 Google Scholar
Tsujimoto, T., Shigeyama, T., & Yoshii, Y. 1999, ApJ, 519, L63 CrossRefGoogle Scholar
Tsujimoto, T., Shigeyama, T., & Yoshii, Y. 2000, ApJ, 531, L33 Google Scholar
Tsujimoto, T., & Shigeyama, T. 2001, ApJ, 561, L97 Google Scholar
Tsujimoto, T., & Shigeyama, T. 2002, ApJ, 571, L93 Google Scholar
Tsujimoto, T., & Shigeyama, T. 2003a, Carnegie Observatories Astrophysics Series, Vol. 4: Origin and Evolution of the Elements, eds. A. McWilliam, & M. Rauch (Pasadena: Carnegie Observatories)Google Scholar
Tsujimoto, T., & Shigeyama, T. 2003b, ApJ, 590, 803 Google Scholar
Welty, D. E., Lauroesch, J. T., Blades, C., Hobbs, L. M., & York, D. G. 2001, ApJ, 554, L75 Google Scholar
Wheeler, J. C., Sneden, C., & Truran, J. W. 1989, ARA&A, 27, 279 Google Scholar