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We present VLT observations of the interacting system AM 1353-272. Using theFORS2 instrument, we studied the kinematics of the ionized gas along itsprominent tidal tails and discovered strikingly large velocity gradientsassociated with seven luminous tidal knots. These kinematical structures cannotbe caused by streaming motion and most likely do not result from projectioneffects. More probably, instabilities in the tidal tails have lead to theformation of kinematically decoupled objects which could be the progenitors ofself-gravitating Tidal Dwarf Galaxies.Comment: 3 color figures, to appear 10. Nov. 2002 in ApJ

Large Velocity Gradients in the Tidal Tails of the Interacting Galaxy AM 1353−272 (“The Dentist’s Chair”)