Statistics of matter distribution from halo dynamics

Details Statistics of matter distribution from halo dynamics Statistics of matter distribution from halo dynamics

Jun 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...356..350b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 356, June 20, 1990, p. 350-358.

Statistics

Computation

9

Dark Matter, Galactic Structure, Spatial Distribution, Spiral Galaxies, Computational Astrophysics, Galactic Clusters, Velocity Distribution

Scientific paper

The galaxy-background correlation function at short distances is explored by means of the observed disk dynamics of spiral galaxies. Using both the sample of galaxies and the analytical method for dark-to-luminous mass decomposition from optical rotation curves presented by Persic and Salucci (1988, 1990), individual sizes and mean densities are worked out for 42 extended halos as functions of both the intensity and the gradient of the central velocity field. The statistics for the expected density enhancements within given distances from galactic centers shows simple properties which strongly tie galaxy-background and galaxy-galaxy correlation functions.

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