A new determination of the peculiar Virgocentric velocity of the local group of galaxies

Details A new determination of the peculiar Virgocentric velocity of the local group of galaxies A new determination of the peculiar Virgocentric velocity of the local group of galaxies

Jun 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985aj.....90.1007d&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 90, June 1985, p. 1007-1011.

Astronomy and Astrophysics

Astronomy

9

Astrometry, Elliptical Galaxies, Local Group (Astronomy), Radial Velocity, Virgo Galactic Cluster, Big Bang Cosmology, Correlation, Distance, Luminosity, Radii

Scientific paper

A new determination of the peculiar velocity of the Local Group of galaxies towards the Virgo cluster center is presented. This study is based on a sample of 67 E galaxies that are members of groups and clusters, with radial velocities in the range of 1000 to 7000 km/s. The relation between luminosity and effective radius (half-light) was used as a distance indicator. After correction for a derived Virgocentric velocity of 200 + or - 50 km/s, a tight correlation is obtained for this sample of the form: M(B) = 19.00 - 3.03 log R(e) (kpc). Also discussed are some possible cosmological consequences.

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