Proper Motions of the Satellites of M31

Hodkinson, Ben; Scholtz, Jakub

doi:10.1093/mnras/stz1893

Proper Motions of the Satellites of M31

Hodkinson, Ben; Scholtz, Jakub

Authors

Ben Hodkinson

Jakub Scholtz

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

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This article has been accepted for publication in the Monthly notices of the Royal Astronomical Society ©: 2019 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.