http://arxiv.org/abs/1708.04542
A model for the mass in and around the Local Group previously used to fit redshifts of dwarf galaxies to their distances between 50 kpc and 2.6 Mpc under the condition of small and growing primeval departures from homogeneity is shown to allow fits to distances and redshifts of twelve galactic globular clusters at galactocentric distances greater than 30 kpc. The solutions also fit three sets of measured globular cluster proper motions and the orientation of one observation of tidal tails. In some solutions these outer globular clusters have circled the Milky Way several times, losing information about their initial conditions. In other trajectories globular clusters are approaching the Milky Way for the first time from formation in mass concentrations modest enough to have small internal velocities and initially moving away from the proto–Milky Way galaxy at close to the general rate of expansion of the universe.
P. Peebles
Wed, 16 Aug 17
27/46
Comments: 19 pages, 11 figures