Nucleosynthesis origin of PG 1159 stars, Sakurai's object and of rare subclasses of presolar grains

Autor:	Gallino, R., Straniero, O., Zinner, E., Jadhav, M., Piersanti, L., Cristallo, S., Bisterzo, S.
Rok vydání:	2011
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Druh dokumentu:	Working Paper
Popis:	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. Comment: 5 pages, 2 figures, 1 table, conference proceeding
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1107.0562 Zobrazit plný text záznamu View this record from Arxiv