The rotation of the globular cluster 47 Tucanae in the plane of the sky

被引：82

作者：

Anderson, J

King, IR

机构：

[1] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[2] Univ Washington, Dept Astron, Seattle, WA 98195 USA

来源：

ASTRONOMICAL JOURNAL | 2003年 / 126卷 / 02期

关键词：

astrometry; globular clusters : individual (NGC 104=47 Tucanae); stellar dynamics;

D O I：

10.1086/376480

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have used the Hubble Space Telescope (HST) to measure the component of rotation of 47 Tuc in the plane of the sky, using background stars of the SMC as a reference. The rotation is comparable to that in the line of sight, showing that the axis of rotation of the cluster is considerably inclined. We also give an improved value of the absolute proper motion of 47 Tuc.

引用

页码：772 / 777

页数：6

共 8 条

[1] Toward high-precision astrometry with WFPC2. I. Deriving an accurate point-spread function [J].