The self-enrichment scenario in intermediate metallicity globular clusters

被引：0

作者：

Ventura, P. ^{[1
]}

D'Antona, F. ^{[1
]}

机构：

[1] INAF, Observatory of Rome, via Frascati 33, 00040 MontePorzio Catone (RM), Italy

来源：

Astronomy and Astrophysics | 2008年 / 479卷 / 03期

关键词：

Context: We present stellar yields computed from detailed models of intermediate mass asymptotic giant branch stars of low metallicity. In this work; all the main microphysics inputs have been updated; and in particular α-enhancement is explicitly taken into account in both the opacities and equation of state.Aims: The target of this work is to provide a basis for testing the reliability of the AGB self-enrichment scenario for globular clusters of intermediate metallicity. These globular clusters exhibit well-defined abundance patterns; which have often been interpreted as the consequence of the pollution of the interstellar medium by the ejecta of massive AGBs. Methods: We calculated a grid of intermediate-mass models with metallicity; the evolutionary sequences are followed from the pre-main sequence throughout the whole AGB phase. We focus our attention on those elements widely studied in the spectroscopic investigations of globular clusters stars; i.e; oxygen; sodium; aluminium; magnesium; and fluorine. Results: The predictions of our models show an encouraging agreement with the demand of the self-enrichment scenario for what concerns the abundances of oxygen; fluorine; and magnesium. The question of sodium is more tricky; due to the large uncertainties of the cross-sections of the Ne-Na cycle. The present results show that only a relatively narrow range of initial masses ( ) can be responsible for the self enrichment.. © 2008 ESO;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Journal article (JA)

引用

页码：805 / 816

共 50 条

[1] The self-enrichment scenario in intermediate metallicity globular clusters
Ventura, P.
D'Antona, F.
NINTH TORINO WORKSHOP ON EVOLUTION AND NUCLEOSYNTHESIS IN AGB STARS AND THE SECOND PERUGIA WORKSHOP ON NUCLEAR ASTROPHYSICS, 2008, : 49 - 55
[2] The self-enrichment scenario in intermediate metallicity globular clusters
Ventura, P.
D'Antona, F.
ASTRONOMY & ASTROPHYSICS, 2008, 479 (03) : 805 - 816
[3] On the self-enrichment scenario of galactic globular clusters: constraints on the IMF
Prantzos, N.
Charbonnel, C.
ASTRONOMY & ASTROPHYSICS, 2006, 458 (01) : 135 - 149
[4] On the self-enrichment scenario of galactic globular clusters: Constraints on the IMF
Prantzos, N.
Charbonnel, C.
Astronomy and Astrophysics, 1600, 458 (01): : 135 - 149
[5] Massive AGB models of low metallicity: the implications for the self-enrichment scenario in metal-poor globular clusters
Ventura, P.
D'Antona, F.
ASTRONOMY & ASTROPHYSICS, 2009, 499 (03): : 835 - 846
[6] The self-enrichment of galactic halo globular clusters - The mass-metallicity relation
Parmentier, G
Gilmore, G
ASTRONOMY & ASTROPHYSICS, 2001, 378 (01) : 97 - 101
[7] THE SELF-ENRICHMENT OF GLOBULAR-CLUSTERS
MORGAN, S
LAKE, G
ASTROPHYSICAL JOURNAL, 1989, 339 (01): : 171 - 177
[8] Self-enrichment of galactic halo globular clusters
Parmentier, G
Noels, A
Gilmore, GF
NEW HORIZONS IN GLOBULAR CLUSTER ASTRONOMY, 2003, 296 : 228 - 229
[9] A Model for Clumpy Self-enrichment in Globular Clusters
Bailin, Jeremy
ASTROPHYSICAL JOURNAL, 2018, 863 (01):
[10] Light nuclei in galactic globular clusters: constraints on the self-enrichment scenario from nucleosynthesis
Prantzos, N.
Charbonnel, C.
Iliadis, C.
ASTRONOMY & ASTROPHYSICS, 2007, 470 (01) : 179 - 190

← 1 2 3 4 5 →