Nonminimal global monopoles and bound orbits

We perform a numerical analysis of the gravitational field of a global mono pole coupled nonminimally to gravity and find that, for some given nonminim al couplings (in contrast with the minimal coupling case), there is an attr active region where bound orbits exist. We exhibit the behavior of the freq uency shifts that would be associated with "rotation curves" of stars in ci rcular orbits in the spacetimes of such global monopoles.