Witnessing the formation of a brightest cluster galaxy at z > 2

被引：2
作者：
Overzier, Roderik A.
Miley, George K.
Ford, Holland C.
机构：
[1] Johns Hopkins Univ, Baltimore, MD 21218 USA
[2] Leiden Observ, NL-2300 RA Leiden, Netherlands
来源：
NEW ASTRONOMY REVIEWS | 2007年 / 51卷 / 1-2期
关键词：
early universe; galaxies; clusters; general;
D O I：
10.1016/j.newar.2006.11.021
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present deep observations taken with the HST advanced camera for surveys of the central massive galaxy in a forming cluster at z = 2.2. The galaxy hosting the powerful radio source MRC 1138-262 is associated with one of the most extensive merger systems known in the early universe. Our HST/ACS image shows many star-forming galaxies merging within a similar to 200 kpc region that emits both diffuse line emission and continuum in the rest-frame UV. Because this galaxy lives in an overdense environment, it represents a rare view of a brightest cluster galaxy in formation at z > 2 which may serve as a testbed for predictions of massive cluster galaxy formation. (c) 2006 Published by Elsevier B.V.
引用
收藏
页码：202 / 205
页数：4
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