Searching for Tidal Tails in Galactic Dwarf Spheroidal Satellites
  We present preliminary results of a long-term project to investigate the process of accretion and tidal disruption of dSph satellites in the Galactic halo and, in particular, to search for new tidal tails in a sample of nearby dSph satellites of the Milky Way. Here we present our finding of extra-tidal debris in the Ursa Minor dS ph and discuss the detection by the Sloan Digitized Sky Survey team of what could be a tidal stream associated to the Sagittarius dSph. 
D. Martinez-Delgado, A. Aparicio & M.A. Gomez-Flechoso