The binary second sequence in cluster colour-magnitude diagrams

被引：79

作者：

Hurley, J ^{[1
]}

Tout, CA ^{[1
]}

机构：

[1] Cambridge Observ, Inst Astron, Cambridge CB3 0HA, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1998年 / 300卷 / 04期

关键词：

binaries : general; galaxies : star clusters;

D O I：

10.1046/j.1365-8711.1998.01981.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show how the second sequence seen lying above the main sequence in cluster colour-magnitude diagrams results from binaries with a large range of mass ratios and not just from those with equal masses. We conclude that the presence of a densely populated second sequence, with only sparse filling in between it and the single star main sequence, does not necessarily imply that binary mass ratios are close to unity.

引用

页码：977 / 980

页数：4

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