Hello ! I want to modelize a Dsph, stellar and dark matter distributions. In particular, I'm interested in the new discovered dSphs in the Local group, as Ursa Minor, Willman, Draco.. The aim of my study is to predict the gamma ray flux due to the annihilation of dark matter particles in these objects. (Dsph are the most dominated DM dominated systems in the universe -for now) so, just to start.. What are the data we have ? velocities ? velocity dispersions? I hope a rich debate will be engaged. Thanks.