Kinematic Disturbances in Optical Rotation Curves among 89 Virgo Disk Galaxies

Vera C. Rubin, Andrew H. Waterman, Jeffrey D. P. Kenney

For 89 galaxies, mostly spirals, in the Virgo cluster region, we have obtained optical long-slit major axis spectra of the ionized gas. We find: (1) One-half of the Virgo galaxies…