Redshifts of four southern Abell clusters

Details Redshifts of four southern Abell clusters Redshifts of four southern Abell clusters

Dec 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pasp...99.1261k&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 99, Dec. 1987, p. 1261-1263.

Astronomy and Astrophysics

Astronomy

5

Galactic Clusters, Red Shift, Southern Sky, Astronomical Spectroscopy, Mass Distribution, Spatial Distribution

Scientific paper

Redshifts have been measured for galaxies in four southern Abell clusters: A266, A2361, A2362, and A2661. Their average heliocentric values are: 28473, 18418, 18127, and 19060 km/s, respectively. A2361 and A2362 have a projected separation of just 1.3/h Mpc, which would make them among the tightest known binary clusters. Unless the single galaxy measured is in the foreground, A2661 is much closer than its D = 6 classification suggests. This casts further doubt on the reality of the putative association of distant rich clusters of which it was thought to be a member.

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