ω Centauri:: Not a recent merger but self-enriched?

被引：27

作者：

Platais, I ^{[1
]}

Wyse, RFG

Hebb, L

Lee, YW

Rey, SC

机构：

[1] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

[2] Yonsei Univ, Ctr Space Astrophys, Seoul 120749, South Korea

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 591卷 / 02期

基金：

美国国家科学基金会;

关键词：

astrometry; globular clusters : individual (NGC 5139); stars : kinematics; supernovae : general;

D O I：

10.1086/377161

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The globular cluster omega Centauri shows the largest spread in chemical element abundances of known clusters. We discuss the recent proposal that the most metal-rich stars have a bulk transverse motion with respect to the other cluster members and show that this could arise as a spurious effect resulting from a residual color/magnitude-related term in the proper motions. We briefly discuss the possibility of self-enrichment for this most metal-rich component, including Type Ia supernovae ejecta.

引用

页码：L127 / L130

页数：4

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