STELLAR DYNAMICS IN E-741(E PAIRS OF GALAXIES .1. NGC)742, NGC-1587/88 AND NGC-2672/73 - THE DATA/

We present a kinematic study of three E+E galaxy pairs, NGC 741/742, 1 587/1588 (CPG 99) and 2672/2673 (CPG 175). All three pairs show a simi lar morphological distortion (i.e. the off-centering of inner versus o uter isophotes; Davoust and Prugniel 1988) which is ascribed to the on going interaction. The data was obtained at the CFHT equipped with the Herzberg Spectrograph at a resolution of 0.88 Angstrom px(-1). NGC 74 1 and 2673 show significant rotation along the apparent minor axis. Bo th components of CPG 99 rotate very fast (with no evidence for rotatio n along the minor axis of either component). None of the galaxies show abnormally high central velocity dispersion. We report some of the fi rst clear detections of well defined velocity dispersion curves for in teracting pairs. They show a systematic decrease with distance from th e center, as expected for normal ellipticals. They do not show obvious heating in the outer parts as was previously reported. NGC 741 and 26 72 show, respectively, possible U and inverse U-shaped structure in th eir velocity profiles.