The First Stars: Evolution and Nucleosynthesis

We have computed stellar models of metal-free (Z=0) intermediate mass stars (4-8 M^sub odot^). We have found, for the first time, that these stars do experience the thermal pulse phase and enrich the envelope with He, C, primary N and some O and Li. Adopting an IMF obtained for Z=0stars, we show tha...

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Bibliographic Details
Published in:Astrophysics and space science 2001-05, Vol.277 (1), p.161-164
Main Authors: Domínguez, Inma, Abia, Carlos, Straniero, Oscar, Chieffi, Alessandro, Limongi, Marco
Format: Article
Language:English
Subjects:
Astrophysics
Evolution
Stars
Stars & galaxies
Online Access:Get full text
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Summary:We have computed stellar models of metal-free (Z=0) intermediate mass stars (4-8 M^sub odot^). We have found, for the first time, that these stars do experience the thermal pulse phase and enrich the envelope with He, C, primary N and some O and Li. Adopting an IMF obtained for Z=0stars, we show that Pop. III intermediate mass stars could have contributed significantly to the early nitrogen and carbon galactic enrichment. Furthermore, local contaminations would be very relevant.[PUBLICATION ABSTRACT]
ISSN:0004-640X
1572-946X
DOI:10.1023/A:1012793425129