Structure of the central region of the Coma cluster

Journal Article · Wed Aug 01 04:00:00 EDT 1973 · Astrophys. J., v. 183, no. 3, pp. 783-790

DOI:https://doi.org/10.1086/152267· OSTI ID:4324840

Bahcall, N A

Surface distributions of galaxies in the Coma cluster are determined for three limiting magnitudes. A core radius is obtained for each of the distributions from a fit to an isothennal gas-sphere model. No large effect of mass segregation is observed, although a slight segregation (corresponding to less than ~20 percent in core radii) could exist. The density distribution agrees well with Ruddy's luminosity distribution in the cluster; therefore, galaxies and total light are distributed in the same way throughout the central region of the cluster. An anisotropy in the bright galaxy distribution is found, indicating a higher density of bright galaxies in the E-W direction as compared with the N-S direction; the region of anisotropy also contains extended X-ray and radio sources. (auth)

• Research Organization: Princeton University Observatory
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-021896
• OSTI ID: 4324840
• Journal Information: Astrophys. J., v. 183, no. 3, pp. 783-790, Journal Name: Astrophys. J., v. 183, no. 3, pp. 783-790; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

*COSMIC RADIO SOURCES-- GALAXY CLUSTERS
*COSMIC X-RAY SOURCES-- GALAXY CLUSTERS
*GALAXIES-- SPATIAL DISTRIBUTION
*GALAXY CLUSTERS-- LUMINOSITY
ANISOTROPY
COSMOLOGY GALAXY CLUSTERS
N56300* --Physics (Astrophysics & Cosmology)--Quasi-stellar
Radio & X-Ray Sources
N56500 --Physics (Astrophysics & Cosmology)--Galaxies