A study of radial velocity members of eight rich clusters of galaxies

Details A study of radial velocity members of eight rich clusters of galaxies A study of radial velocity members of eight rich clusters of galaxies

Feb 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996cha%26a..20..273s&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 20, Issue 3, p. 273-280.

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

On the basis of a radial velocity criterion for cluster membership, supplemented by a consideration of surface density distribution, we calculate the distribution parameters and membership probabilities of individual galaxies for 8 Abell clusters of galaxies. The membership determination is shown to be a reasonable and a feasible one, and the distribution of the radial velocity dispersion to be in agreement with the dynamical model. An elongated structure seems to be universal in rich clusters. An obvious relationship between NA and σc is found from these clusters and the mass to light ratio of rich clusters is found to lie between 100 and 600h-1100, with an average value of 350h-1100.

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