Clustering bias in the nearby galaxies catalog and in cold dark matter models

Details Clustering bias in the nearby galaxies catalog and in cold dark matter models Clustering bias in the nearby galaxies catalog and in cold dark matter models

Oct 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...333l..45w&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 333, Oct. 15, 1988, p. L45-L49. NSF-supported research.

Mathematics

Logic

70

Astronomical Catalogs, Cosmology, Dark Matter, Galactic Clusters, Galactic Mass, Mass To Light Ratios, Angular Velocity, Galactic Evolution, Morphology, Universe

Scientific paper

The cold dark matter theory predicts that the clustering of galaxies should be an increasing function of the circular velocity of the dark halos in which they were formed. The authors show that an effect of this kind is present in the Nearby Galaxies Catalog at about the level predicted. Galaxies with large circular velocities do indeed lie preferentially in high-density regions. This effect is closely related to the well-known dependence of galaxy clustering on morphological type. The theory predicts that galaxies with circular velocities in excess of 300 km s-1 should almost never be found in low-density regions.

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