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19 April 2024

» arxiv » 1107.0562

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Nucleosynthesis origin of PG 1159 stars, Sakurai's object and of rare subclasses of presolar grains
R. Gallino ; O. Straniero ; E. Zinner ; M. Jadhav ; L. Piersanti ; S. Cristallo ; S. Bisterzo ;
Date:	4 Jul 2011
Abstract:	We discuss theoretical AGB predictions for hydrogen-deficient PG 1159 stars and Sakurai’s object, which show peculiar enhancements in He, C and O, and how these enhancements may be understood in the framework of a very late thermal pulse nucleosynthetic event. We then discuss the nucleosynthesis origin of rare subclasses of presolar grains extracted from carbonaceous meteorites, the SiC AB grains showing low 12C/13C in the range 2 to 10 and the very few high-density graphite grains with 12C/13C around 10.
Source:	arXiv, 1107.0562
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