The Lumpy Cluster Abell 1185

Details The Lumpy Cluster Abell 1185 The Lumpy Cluster Abell 1185

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aj....111...64m&link_type=abstract

Astronomical Journal v.111, p.64

Astronomy and Astrophysics

Astronomy

11

Galaxies: Clusters: Individual: Abell 1185

Scientific paper

Abell 1185, a richness class 1 cluster of galaxies (cz = 9800 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 1.4 h^-1^ Mpc of the cluster center. The sample has a depth of m_R_ ~ 15.8, and no substantial spatial bias. In addition to the optical data we reanalyze a deep (11459 s) Einstein x-ray observation. Clumps in the velocity distribution of A1185 are localized on the sky. The Dressler- Shectman test confirms the existence of subclumps with >99% confidence. X-ray emission from the cluster also appears complex; contributions from individual galaxies within A1185 are detectable. The brightest unresolved x-ray source coincides with an elliptical galaxy which contains an active LINER nucleus. Throughout the paper we define H_0_= 100 h km s^-1^ Mpc^- -1^, and unless otherwise indicated, we assume h = 1.

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