Numerical simulations of the metallicity distribution in dwarf spheroidal galaxies

被引：4

作者：

Ripamonti, E. ^{[1
]}

Tolstoy, E. ^{[1
]}

Helmi, A. ^{[1
]}

Battaglia, G. ^{[1
]}

Abel, T. ^{[2
]}

机构：

[1] Univ Groningen, Kapteyn Astron Inst, NL-9700 AB Groningen, Netherlands

[2] Kavli Inst Particle Astrophys & Cosmol, Stanford Linear Accelerator Ctr, Menlo Pk, CA 94025 USA

来源：

CRAL-2006 CHEMODYNAMICS: FROM FIRST STARS TO LOCAL GALAXIES | 2007年 / 24卷

关键词：

D O I：

10.1051/eas:2007051

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Recent observations show that the number of stars with very low metallicities in the dwarf spheroidal satellites of the Milky Way is low, despite the low average metallicities of stars in these systems. We undertake numerical simulations of star formation and metal enrichment of dwarf galaxies in order to verify whether this result can be reproduced with "standard" assumptions. The answer is likely to be negative, unless some selection bias against very low metallicity stars is present in the observations.

引用

页码：15 / +

页数：2

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