Statistics – Computation
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...328..381m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 328, May 15, 1988, p. 381-394.
Statistics
Computation
14
Astronomical Catalogs, Cosmology, Galactic Clusters, Red Shift, Algorithms, Computational Astrophysics, Mass To Light Ratios, Stellar Luminosity
Scientific paper
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 the 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 the 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.
Hartwick David A. F.
Morgan Christopher G.
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