Co-production of light p-, s- and r-process isotopes in the high-entropy wind of core-collapse supernovae

Khalil Farouqi, Oliver Hallmann, Ulrich Ott, Karl Ludwig Kratz

Research output: Conference article

Abstract

We have performed a large-scale nucleosynthesis parameter study within the high-entropy-wind (HEW) scenario of core-collapse supernovae with the primary aim to obtain indications for the production conditions of the classical 'p-only' isotopes of the light trans-Fe elements in the Solar System (SS). We find that in moderately neutron-rich winds, sizeable abundances of p-, s- and r-process nuclei between 64Zn and 104Ru are co-produced. Taking the peculiar compositions of the 7 stable Mo isotopes in (i) the SS and (ii) in specific presolar SiC X-grains as particularly challenging examples, our results show that the HEW ejecta can reproduce both, (i) the SS-ratio of 92Mo/94Mo with isotopic yields per SN event in the 10-8 M⊙ range, and (ii) the puzzling grain data of the Argonne / Chicago group. These results are in principal agreement with earlier studies, and may provide further means to revise the abundance estimates in the historical "lightp", "weak-s" and "weak-r" process regions.

Original languageEnglish
JournalProceedings of Science
Publication statusPublished - dec. 1 2010
Event11th Symposium on Nuclei in the Cosmos, NIC 2010 - Heidelberg, Germany
Duration: júl. 19 2010júl. 23 2010

ASJC Scopus subject areas

  • General

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