INTERACTING BINARY GALAXIES .7. KINEMATIC DATA FOR 12 DISTURBED ELLIPTICALS

We have analyzed long-slit spectroscopic data for a sample of 12 tidal ly disturbed elliptical galaxies. The spectra were obtained with the K PNO 4 m RC spectrograph. Rotation curves and velocity dispersion profi les have been measured at a variety of position angles in these galaxi es and have been used to analyze the dynamical response and internal k inematics of stellar systems involved in strong gravitational encounte rs. We have confirmed with these data our previous observation that su ch galaxies often reveal U-shaped ''rotation'' profiles, indicative of a strong resonant tidal effect among those stars that are moving prog rade with respect to the galactic encounter. Additional kinematic pecu liarities, including U-shaped and W-shaped velocity dispersion profile s, are also revealed in these data. The observed morphologies of the t idal features seen in some of the sample galaxies are consistent with the idea that elliptical galaxies often contain an embedded disk compo nent. Our velocity profiles along new position angles confirm the vali dity of tidal interaction models that we previously derived for specif ic pairs in our sample using only a single slit position angle per gal axy. Additional insight into possible refinements of those collision m odels has also resulted from this study.