The velocity dispersion among galaxies and the density parameter

Details The velocity dispersion among galaxies and the density parameter The velocity dispersion among galaxies and the density parameter

Jun 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apl%26c..27...35d&link_type=abstract

Astrophysical Letters and Communications (ISSN 0888-6512), vol. 27, June 1988, p. 35-39.

Statistics

Computation

1

Astronomical Models, Celestial Mechanics, Computational Astrophysics, Cosmology, Elliptical Galaxies, Galactic Structure, Velocity Distribution, Density (Mass/Volume), Local Group (Astronomy), Mass To Light Ratios, Root-Mean-Square Errors, Virgo Galactic Cluster

Scientific paper

From a sample of 151 E-galaxies the authors have derived the r.m.s. peculiar velocity of galaxies. The three-dimensional velocity dispersion is 230±20 km s-1 consistent with the earlier results by Davis and Peebles (1983). This r.m.s. peculiar velocity implies a density parameter Ω = 0.060±0.015 within the framework of the linear theory.

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