Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.245..559e&link_type=abstract
Monthly Notices of the Royal Astronomical Society, Vol. 245, NO. 1/JUL1, P. 559, 1990
Astronomy and Astrophysics
Astronomy
380
Scientific paper
An X-ray flux-limited sample of clusters of galaxies is presented. Over 90 per cent of the clusters have been well-observed with both imaging and spectroscopic detectors. We have determined both the local luminosity function and the space density of clusters as a function of temperature. A significant deficit in the numbers of high-luminosity clusters is found in the redshift range z ~ 0.1-0.2 compared with numbers of nearby clusters. This indicates that the X-ray luminous clusters are undergoing strong evolution at the present time. A simple stochastic merging model which reproduces the rapid evolution seen in the data is investigated. The 'temperature function' is used to put limits on the large-scale mass spectrum of the Universe.
Arnaud A. A. K.
Edge Alastair C.
Fabian Andrea C.
Stewart Gordon C.
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