Detecting the transition from Pop III to Pop II stars

被引：1

作者：

Venkatesan, A

机构：

[1] NSF Astronomy and Astrophysics, Center for Astrophysics and Space Astronomy, University of Colorado, Boulder

来源：

NEW ASTRONOMY REVIEWS | 2006年 / 50卷 / 1-3期

基金：

美国国家科学基金会;

关键词：

cosmology; theory; population III stars; cosmic microwave background; reionization; intergalactic medium; gamma-ray burst;

D O I：

10.1016/j.newar.2005.11.013

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss the cosmological significance of the transition from the Pop III to Pop II mode of star formation in the early universe, and when and how it may occur in primordial galaxies. Observations that could detect this transition include those of element abundances in metal-poor Galactic halo stars, and of the helium reionization and associated heating of the intergalactic medium. We suggest that gamma-ray bursts may be a better probe of the end of the first-stars epoch than of Pop III stars. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：108 / 112

页数：5

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