X-ray clusters of galaxies - Correlations with optical morphology and galaxy density

Abstract

view Abstract Citations (99) References (24) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS X-ray clusters of galaxies: correlations with optical morphology and galaxy density. Bahcall, N. A. Abstract The entire sample of 37 X-ray clusters of galaxies detected by the Ariel 5 satellite at high latitudes is analyzed optically. Morphological types (for all clusters) and central galaxy densities (for all clusters with measured redshifts) are determined, and the positions, redshifts, and richness groups of the set of Southern Hemisphere X-ray clusters are estimated. The X-ray luminosity is found to be correlated with both cluster morphology and central galaxy density. The observed correlations are consistent with a thermal-bremsstrahlung model in which the hot intracluster gas density is proportional to the galaxy density, and the temperature is proportional to the galaxy velocity dispersion. Publication: The Astrophysical Journal Pub Date: October 1977 DOI: 10.1086/182543 Bibcode: 1977ApJ...217L..77B Keywords: Bremsstrahlung; Galactic Clusters; Red Shift; X Ray Sources; Ariel 5 Satellite; Intergalactic Media; Morphology; Southern Hemisphere; Spaceborne Astronomy; Astrophysics full text sources ADS | data products SIMBAD (42) NED (27)