Dynamics of the Local Group: the Dwarf Galaxies
  I present a dynamical analysis of the measured redshifts and distances of 64
dwarf galaxies at distances between 50 kpc and 2.6 Mpc. These dwarfs are
assumed to move as test particles in the gravitational field of 12 massive
actors---galaxies and groups of galaxies---under the mixed boundary conditions
imposed by cosmology. The model fits most of the measured dwarf distances and
redshifts. But more work, perhaps on the gravitational interaction among dwarf
galaxies, is required to account for the motions of six galaxies in the NGC
3109 association and two in the DDO 210 association. The sample of dwarfs is
large enough to constrain the halo mass run in the Milky Way. The evidence
points to a sharper break from a nearly flat inner rotation curve than
predicted by the NFW profile.
