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Title: ANDROMEDA DWARFS IN LIGHT OF MOND. II. TESTING PRIOR PREDICTIONS

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 modified Newtonian dynamics (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 ΛCDM.
Authors:
 [1] ;  [2]
  1. Department of Astronomy, Case Western Reserve University, Cleveland, OH 44106 (United States)
  2. Department of Particle Physics and Astrophysics, Weizmann Institute of Science, Rehovot 76100 (Israel)
Publication Date:
OSTI Identifier:
22270879
Resource Type:
Journal Article
Resource Relation:
Journal Name: Astrophysical Journal; Journal Volume: 775; Journal Issue: 2; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; ASTROPHYSICS; COSMOLOGICAL CONSTANT; COSMOLOGY; GALAXIES; MASS; NONLUMINOUS MATTER; VELOCITY; VISIBLE RADIATION