Global textures and the formation of self-bound gravitational systems

Using a Newtonian approximation we developed a quantitative criterion for t he collapse of a spherical distribution of matter under an isolated texture field. In particular, we found the evolution of an overdense region is str ongly determined by two parameters: the energy scale of symmetry breaking ( eta) and the initial radius of the system. Applying our collapse criterion to typical galaxy scales we verified the formation of 10(11)-M. objects at z less than or similar to 9 and 10(12)-M. objects at z less than or similar to 5.