Intracluster medium abundances revisited

被引：0
|
作者：
Gibson, BK [1 ]
Woolaston, EJ [1 ]
机构：
[1] Australian Natl Univ, Mt Stromlo & Siding Spring Observ, Weston, ACT 2611, Australia
来源：
ABUNDANCE PROFILES: DIAGNOSTIC TOOLS FOR GALAXY HISTORY | 1998年 / 147卷
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D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We examine the origin of heavy elements in the intracluster medium (ICM) of galaxy clusters, concentrating upon the roles played by supernovae (SNe) Types Ia and II. The most accurately determined elemental abundances, Si and Fe, imply a mild predominance of Type II SNe as the source of ICM Fe, contributing similar to 60 --> 80% of its total (and similar to 100% of alpha-elements). (Currently) intractable uncertainties in measuring X-ray alpha-element ICM abundances, the initial mass function (IMF), and stellar evolution ingredients, make a more precise determination of the Ia:II ICM iron "ratio" impossible.
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页码：308 / 312
页数：5
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