Omega Centauri: Nucleus of a Milky Way Dwarf Spheroidal? - A technical article from the Los Alamos E-print archive that discusses the possibility that Omega Centauri could be the remains (nucleus) of a once larger satellite dwarf galaxy that has been substantially reduced by tidal stripping caused by the Milky Wa - http://arxiv.org/abs/astro-ph/9910278