The chemical evolution of globular clusters

被引：4

作者：

Kas'yanova, MV ^{[1
]}

Shchekinov, YA ^{[1
]}

机构：

[1] Rostov State Univ, Rostov Na Donu 344006, Russia

来源：

ASTRONOMY REPORTS | 2005年 / 49卷 / 11期

关键词：

D O I：

10.1134/1.2127990

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The sequence of events determining the initial stages of star formation is analyzed in framework of the self-enrichment scenario. The computations are based on a single-zone chemo-dynamical model. It is shown that the first episode of star formation was characterized by an initial mass function shifted toward massive stars (M >= 8 M-circle dot). We argue that the transition to a star formation with a normal (Salpeter) initial mass function was due to more efficient radiative cooling of the proto-globular cluster gas after its enrichment to a metallicity of Z similar to 0.02 Z(circle dot) in agreement with those observed in globular clusters. (c) 2005 Pleiades Publishing, Inc.

引用

页码：863 / 870

页数：8

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