TY - JOUR
T1 - Evolution and nucleosynthesis of primordial low-mass stars
AU - Picardi, Ilenia
AU - Chieffi, Alessandro
AU - Limongi, Marco
AU - Pisanti, Ofelia
AU - Miele, Gennaro
AU - Mangano, Gainpiero
AU - Imbriani, Gianluca
PY - 2004
Y1 - 2004
N2 - We discuss in detail the evolutionary properties of low-mass stars (M less than or equal to 1 M-.) having metallicity lower than Z = 10(-6) from the pre - main sequence up to (almost) the end of the early asymptotic giant branch phase. We also discuss the possibility that the large [C/Fe], [N/Fe] observed on the surface of the most iron-poor star currently known, HE 0107 - 5240, could be attributed to the autopollution induced by the penetration of the He convective shell into the H-rich mantle during the He core flash of a low-mass, very low metallicity star. On the basis of a quite detailed analysis, we conclude that the autopollution scenario cannot be responsible for the observed chemical composition of HE 0107 - 5240.
AB - We discuss in detail the evolutionary properties of low-mass stars (M less than or equal to 1 M-.) having metallicity lower than Z = 10(-6) from the pre - main sequence up to (almost) the end of the early asymptotic giant branch phase. We also discuss the possibility that the large [C/Fe], [N/Fe] observed on the surface of the most iron-poor star currently known, HE 0107 - 5240, could be attributed to the autopollution induced by the penetration of the He convective shell into the H-rich mantle during the He core flash of a low-mass, very low metallicity star. On the basis of a quite detailed analysis, we conclude that the autopollution scenario cannot be responsible for the observed chemical composition of HE 0107 - 5240.
UR - http://iopscience.iop.org/0004-637X/609/2/1035/pdf/59323.web.pdf?ejredirect=migration
M3 - Article
VL - 609
SP - 1035
EP - 1044
JO - The Astrophysical Journal
JF - The Astrophysical Journal
SN - 1538-4357
IS - 2
ER -