On the mass and extent of the Coma Cluster of galaxies

Details On the mass and extent of the Coma Cluster of galaxies On the mass and extent of the Coma Cluster of galaxies

Jul 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...270..422s&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 270, July 15, 1983, p. 422-426.

Astronomy and Astrophysics

Astrophysics

4

Galactic Clusters, Mass Distribution, Galactic Nuclei, Hubble Constant, Mass To Light Ratios, Red Shift

Scientific paper

The mass of the Coma Cluster of galaxies is estimated using the potential-estimation method. To obtain a solution, it is necessary to restrict the sample to galaxies less than 75 arcmin from the cluster center, corresponding to 3 Mpc for a Hubble constant H = 50 km/s Mpc. The galaxies beyond this limit are evidently dominated by nonmembers sharing the cluster's redshift, presumably belonging to the Coma/A1367 Supercluster. The mass found for the cluster is (1.5 + or 0.2) x 10 to the 15th solar mass, giving a mean mass per member of 2 x 10 to the 12th solar mass and a mass-to-light ratio of 150. The majority of this mass must be inside the 3 Mpc limit.

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