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Contrasting copper evolution in omega Centauri and the Milky Way

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Title:
Contrasting copper evolution in omega Centauri and the Milky Way Authors:
Romano, Donatella; Matteucci, Francesca Affiliation:
AA(INAF-Osservatorio Astronomico di Bologna, Via Ranzani 1, I-40127 Bologna, Italy), AB(Dipartimento di Astronomia, Università di Trieste, Via Tiepolo 11, I-34131 Trieste, Italy) Publication:
Monthly Notices of the Royal Astronomical Society: Letters, Volume 378, Issue 1, pp. L59-L63. (MNRAS Homepage) Publication Date:
06/2007 Origin:
MNRAS Astronomy Keywords:
nuclear reactions, nucleosynthesis, abundances, stars: abundances, Galaxy: evolution, globular clusters: individual: omega Centauri DOI:
10.1111/j.1745-3933.2007.00320.x Bibliographic Code:
2007MNRAS.378L..59R

Abstract

Despite the many studies on stellar nucleosynthesis published so far, the scenario for the production of copper in stars remains elusive. In particular, it is still debated whether copper originates mostly in massive stars or in Type Ia supernovae. To answer this question, we compute self-consistent chemical evolution models taking into account the results of updated stellar nucleosynthesis. By contrasting copper evolution in omega Cen and the Milky Way, we end up with a picture where massive stars are the major factor responsible for the production of copper in omega Cen as well as the Galactic disc.

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