Residual velocities of small magellanic cloud star clusters

We analyzed the largest Small Magellanic Cloud (SMC) cluster sample (32) with proper motions and radial velocity measurements, from which we obtained their space components. By adopting as a reference recent best-fitted rotating disc of SMC star clusters function position angle, computed residual vectors, compared magnitudes ($\Delta$V) that components equal to dispersions along three independent axes motion ($\Delta$V = 60 km/s). found belong tidally induced structures have $\Delta$V > 50 km/s, suggests velocities in process escaping kinematics, are measurably different. Studied pertaining northern branch Bridge, main Counter-Bridge West halo give support these findings. NGC 121, oldest known cluster, does not any tidal feature, has 64 slightly above boundary between bound kinematically perturbed clusters.