Proper Motions of the Satellites of M31

Hodkinson, Ben; Scholtz, Jakub

Abstract

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 are 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.

Citation

Hodkinson, B., & Scholtz, J. (2019). Proper Motions of the Satellites of M31. Monthly Notices of the Royal Astronomical Society, 488(3), 3231-3237. https://doi.org/10.1093/mnras/stz1893

• Journal Article Type: Article
• Acceptance Date: Jul 8, 2019
• Online Publication Date: Jul 10, 2019
• Publication Date: Sep 30, 2019
• Deposit Date: Oct 8, 2019
• Publicly Available Date: Oct 8, 2019
• Journal: Monthly Notices of the Royal Astronomical Society
• Print ISSN: 0035-8711
• Electronic ISSN: 1365-2966
• Publisher: Royal Astronomical Society
• Peer Reviewed: Peer Reviewed
• Volume: 488
• Issue: 3
• Pages: 3231-3237
• DOI: https://doi.org/10.1093/mnras/stz1893
• Public URL: https://durham-repository.worktribe.com/output/1283978