Andromeda Dwarfs in Light of MOND. II. Testing Prior Predictions
Cosmology and Nongalactic Astrophysics
2013-09-19 v1 General Relativity and Quantum Cosmology
Abstract
We employ recently published measurements of the velocity dispersions in the newly discovered dwarf satellite galaxies of Andromeda to test our previously published predictions of this quantity. The data are in good agreement with our specific predictions for each dwarf made a priori with MOND, with reasonable stellar mass-to-light ratios, and no dark matter, while Newtonian dynamics point to quite large mass discrepancies in these systems. MOND distinguishes between regimes where the internal field of the dwarf, or the external field of the host, dominates. The data appear to recognize this distinction, which is a unique feature of MOND not explicable in LCDM.
Keywords
Cite
@article{arxiv.1308.5894,
title = {Andromeda Dwarfs in Light of MOND. II. Testing Prior Predictions},
author = {Stacy McGaugh and Moti Milgrom},
journal= {arXiv preprint arXiv:1308.5894},
year = {2013}
}
Comments
6 pages, 1 figure. Accepted for publication in the Astrophysical Journal