Excess redshifts in groups of galaxies

Details Excess redshifts in groups of galaxies Excess redshifts in groups of galaxies

Sep 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974a%26a....34..445b&link_type=abstract

Astronomy and Astrophysics, vol. 34, no. 3, Sept. 1974, p. 445-447.

Astronomy and Astrophysics

Astrophysics

5

Galactic Clusters, Red Shift, Velocity Distribution, Galactic Radiation, Luminous Intensity, Radial Distribution, Spiral Galaxies

Scientific paper

A plot of differential velocities and distances of members of groups of galaxies with respect to the brightest member of each group shows a correlation between these two quantities. This suggests that some groups are actually considerably spread in radial distance. Such a spread allows the possibility of a number of well known selection effects which could cause an apparent average excess redshift of group members with respect to the brightest galaxy.

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