Nine X-ray sources in the globular cluster 47 Tucanae

被引：0
作者：
Verbunt, F
Hasinger, G
机构：
[1] Astron Inst, NL-3508 TA Utrecht, Netherlands
[2] Inst Astrophys, D-14482 Potsdam, Germany
来源：
ASTRONOMY & ASTROPHYSICS | 1998年 / 336卷 / 03期
关键词：
globular clusters : individual : 47 Tuc; X-rays : stars;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We analyze ROSAT HRI observations obtained from 1992 to 1996 of the globular cluster 47 Tuc. Identifications of two X-ray sources with HD 2072 and with a galaxy, respectively, are used to obtain accurate (< 2") positions of the X-ray sources in the cluster. We find possible optical counterparts, including the blue objects V 1 and V 2, for three X-ray sources in the core of 47 Tuc, but note that the probability of chance positional coincidence is significant. One of the five sources previously reported by us to reside in the cluster core is found to be an artefact of misalignment between subsequent satellite pointings.
引用
收藏
页码：895 / 901
页数：7
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