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Titolo:
The stellar origin of Li-7 - Do AGB stars contribute a substantial fraction of the local Galactic lithium abundance?
Autore:
Romano, D; Matteucci, F; Ventura, P; DAntona, F;
Indirizzi:
SISSA, ISAS, Int Sch Adv Studies, I-34014 Trieste, Italy SISSA Trieste Italy I-34014 Int Sch Adv Studies, I-34014 Trieste, Italy Univ Trieste, Dipartimento Astron, I-34131 Trieste, Italy Univ Trieste Trieste Italy I-34131 imento Astron, I-34131 Trieste, Italy Osserv Astron Roma, I-00040 Monte Porzio Catone, Italy Osserv Astron RomaMonte Porzio Catone Italy I-00040 orzio Catone, Italy
Titolo Testata:
ASTRONOMY & ASTROPHYSICS
fascicolo: 2, volume: 374, anno: 2001,
pagine: 646 - 655
SICI:
1432-0746(200108)374:2<646:TSOOL->2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
GIANT BRANCH STARS; BIG-BANG NUCLEOSYNTHESIS; X-RAY TRANSIENTS; PRIMORDIAL LITHIUM; HALO STARS; K-GIANT; CLASSICAL NOVAE; ISOTOPE RATIOS; LIGHT-ELEMENTS; COSMIC-RAYS;
Keywords:
galaxy : abundances; galaxy : evolution; galaxy : solar neighbourhood;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
88
Recensione:
Indirizzi per estratti:
Indirizzo: Romano, D SISSA, ISAS, Int Sch Adv Studies, Via Beirut 2-4, I-34014 Trieste, Italy SISSA Via Beirut 2-4 Trieste Italy I-34014 34014 Trieste, Italy
Citazione:
D. Romano et al., "The stellar origin of Li-7 - Do AGB stars contribute a substantial fraction of the local Galactic lithium abundance?", ASTRON ASTR, 374(2), 2001, pp. 646-655

Abstract

We adopt up-to-date Li-7 yields from asymptotic giant branch stars in order to study the temporal evolution of Li-7 in the solar neighbourhood in thecontext of a revised version of the two-infall model for the chemical evolution of our galaxy. We consider several lithium stellar sources besides the asymptotic giant branch stars such as type II supernovae, novae, low-massgiants as well as Galactic cosmic rays and low-mass X-ray binaries. We conclude that asymptotic giant branch stars cannot be considered as important Li-7 producers as believed so far and that the contribution of low-mass giants and novae is necessary to reproduce the steep rise of the Li-7 abundance in disk stars as well as the meteoritic Li-7 abundance. Lithium production in low-mass X-ray binaries hardly affects the temporal evolution of Li-7 in the solar neighbourhood.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 16:03:49