Andromeda Dwarfs in Light of MOND

Abstract

We compare the recently published velocity dispersions for seventeen Andromeda dwarf spheroidals with estimates of the MOND predictions, based on the luminosities of these dwarfs, with reasonable stellar M/L values, and no dark matter. We find that the two are consistent within the uncertainties. We further predict the velocity dispersions of another ten dwarfs for which only photometric data are currently available.

8 pages, 1 Figure, submitted to Astrophys. J. Changes in response to referee's comments. In particular, the range of stellar M/L values used in the MOND predictions narrowed from 1-6 to 1-4 (M/L)(sun). References added

References in corpus (10)

• Too big to fail? The puzzling darkness of massive Milky Way subhaloes
• A Vast Thin Plane of Co-rotating Dwarf Galaxies Orbiting the Andromeda Galaxy
• The kinematic status and mass content of the Sculptor dwarf spheroidal galaxy
• The DART imaging and CaT survey of the Fornax Dwarf Spheroidal Galaxy
• Velocity Dispersion Profiles of Seven Dwarf Spheroidal Galaxies
• Tidal dwarf galaxies as a test of fundamental physics
• Dwarf Spheroidals in MOND
• Cores and Cusps in the Dwarf Spheroidals
• MOND and the mass discrepancies in tidal dwarf galaxies
• Global Deep-MOND Parameter as a Theory Discriminant