2013/02/27 by P. J. E. Peebles, R. Brent Tully, Peebles, P. J. E. +1 · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Galaxies: Formation, Evolution, Phenomena #History and Developments in Astronomy #astro-ph.CO
paper · pdf · doi:10.48550/arxiv.1302.6982
21 pages, 12 figures, to be submitted to the Astrophysical Journal
arxiv created 2013/02/27 · arxiv updated 2013/02/28
This exploration of solutions for the orbits of Local Group galaxies under the cosmological initial condition of growing peculiar velocities and fitted to measured distances, redshifts, and proper motions reveals a considerable variety of histories allowed by present constraints. The solutions also point to computations and measurements at the current level of precision that may lead to a more accurate picture of Local Group dynamics, or perhaps point to adjustments of our simple picture of the arrangement of mass within the Local Group.