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For refcode 1988ApJ...328..381M:
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1988ApJ...328..381M COSMOLOGY FROM A GALAXY GROUP CATALOG. I. BINARIES C. G. MORGAN AND F. D. A. HARTWICK University of Victoria Received 1987 August 27; accepted 1987 November 2 ABSTRACT A new, completely objective group-finding algorithm is described and applied to the CfA redshift catalog. The binary galaxies are isolated for analysis. The assumptions underlying our analysis are (1) that light traces mass, (2) that our binary galaxy subsets are representative light tracers, and (3) that the binary orbits are circular. The primary result of our work is that the resulting bias-free binary catalogs are a function of the assumed cosmological model. For virtually any input value of {OMEGA}_0_ in the range 0.01-5.00 there is a reasonably consistent interpretation of the CfA survey such that the specified value of {OMEGA}_0_ can be derived from the binary sample obtained under that interpretation. A secondary result is that the higher the input value of {OMEGA}_0_, the broader the intrinsic distribution in M/L, and hence the less valid the assumption that light traces mass. Subject headings: cosmology - galaxies: clustering
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