Binary-galaxy-rich clusters of galaxies

Details Binary-galaxy-rich clusters of galaxies Binary-galaxy-rich clusters of galaxies

Dec 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981apj...251..471s&link_type=abstract

Astrophysical Journal, Part 1, vol. 251, Dec. 15, 1981, p. 471-476.

Astronomy and Astrophysics

Astrophysics

19

Astronomical Catalogs, Galactic Clusters, Spatial Distribution, Galactic Evolution, Galactic Structure, Many Body Problem, Red Shift

Scientific paper

A new and rare type of galaxy cluster, containing a large number of binary galaxies among the brightest members, has been discovered. Along with photographs of three prominent examples of the type, counts within annuli of two X Abell diameters are given for 10 examples. The potential importance of such binary-rich clusters for the mass discrepancy problem, and their implications for N-body simulations, are discussed. It is suggested that the average angular separation of binaries in a cluster might be used as a distance indicator.

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