Studies of Coma cluster of galaxies 5. Dynamical problems

Details Studies of Coma cluster of galaxies 5. Dynamical problems Studies of Coma cluster of galaxies 5. Dynamical problems

Apr 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994cha%26a..18..168s&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 18, Issue 2, p. 168-177.

Astronomy and Astrophysics

Astrophysics

1

Clusters Of Galaxies-Dynamics

Scientific paper

We use the radial velocity data for 414 galaxies in the Coma cluster region provided by Kent and Gunn and the results of applying a membership criterion to carry out a discussion on the dynamical aspects of the Coma cluster. Our analysis shows that the Coma cluster has no bulk rotation that is clearly a dynamical effect. Fitting with the King-Mitchie model we find a core radius of 5.2' or 210 kpc at H0 = 50(km/s)/Mpc and a characteristic velocity dispersion of 935 km/s. Viewed dynamically, there is clear morphological segregation, and there is evidence that substructure exists in the central region.

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