THE LUMPY CLUSTER ABELL-1185

Abell 1185, a richness class 1 cluster of galaxies (<c(z)over bar> = 9 800 km s(-1)), has kinematic and x-ray substructure. We measure 39 new velocities in its field, bringing the known cluster population to 82 galaxies within 1.4h(-1) Mpc of the cluster center. The sample has a d epth of m(R) similar or equal to 15.8, and no substantial spatial bias . In addition to the optical data we reanalyze a deep (11 459 s) Einst ein x-ray observation. Clumps in the velocity distribution of A1185 ar e localized on the sky. The Dressler-Shectman test confirms the existe nce of subclumps with >99% confidence. X-ray emission from the cluster also appears complex; contributions from individual galaxies within A 1185 are detectable. The brightest unresolved x-ray source coincides w ith an elliptical galaxy which contains an active LINER nucleus. Throu ghout the paper we define H-0 = 100h km s(-1) Mpc(-1), and unless othe rwise indicated, we assume h = 1. (C) 1996 American Astronomical Socie ty.