Abstract
view Abstract Citations (259) References (14) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Extended Medium-Sensitivity Survey Distant Cluster Sample: X-Ray Cosmological Evolution Gioia, I. M. ; Henry, J. P. ; Maccacaro, T. ; Morris, S. L. ; Stocke, J. T. ; Wolter, A. Abstract The X-ray luminosity function of clusters of galaxies is determined at different cosmic epochs using data from the Einstein Observatory Extended Medium Sensitivity Survey. The sample consists of 67 X-ray-selected clusters that have been grouped in thrEe redshift shells. Evolution is detected in the X-ray properties of clusters. The present volume density of high-luminosity clusters is found to be greater than it was in the past. Given the still limited data set, this result should be regarded as preliminary. It can be interpreted as the consequence of either luminosity evolution or modest density evolution. Publication: The Astrophysical Journal Pub Date: June 1990 DOI: 10.1086/185744 Bibcode: 1990ApJ...356L..35G Keywords: Cosmology; Galactic Clusters; Sky Surveys (Astronomy); X Rays; Computational Astrophysics; Evolution (Development); Heao 2; Luminosity; Red Shift; Astrophysics; GALAXIES: CLUSTERING; GALAXIES: EVOLUTION; LUMINOSITY FUNCTION; X-RAYS: GENERAL full text sources ADS | data products SIMBAD (1)
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