Proper motions of the satellites of M31

被引：6

作者：

Hodkinson, Ben ^{[1
]}

Scholtz, Jakub ^{[2
]}

机构：

[1] Univ Durham, Dept Phys, Durham DH1 3LE, England

[2] Univ Durham, IPPP, Durham DH1 3LE, England

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2019年 / 488卷 / 03期

关键词：

proper motions; local group; MILKY-WAY SATELLITES; DARK-MATTER; THIN PLANE; GALAXIES; VPOS;

D O I：

10.1093/mnras/stz1893

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We predict the range of proper motions of 19 satellite galaxies of M31 that would rotationally stabilize the M31 plane of satellites consisting of 15-20 members as identified by Ibata et al. Our prediction is based purely on the current positions and line-of-sight velocities of these satellites and the assumption that the plane is not a transient feature. These predictions arc therefore independent of the current debate about the formation history of this plane. We further comment on the feasibility of measuring these proper motions with future observations by the THEIA satellite mission as well as the currently planned observations by HST and JWST.

引用

收藏

页码：3231 / 3237

页数：7

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