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Groups and Clusters in the Near-Infrared
Gary A. Mamon
Massive multicolor digital surveys in the near infrared provide new opportunities for statistical analyses of the properties of groups and clusters. These galaxy systems provide a…
The Baryonic Fraction in Groups of Galaxies from X-Ray Measurements
Mark J. Henriksen, Gary A. Mamon
The recent {\sl ROSAT \/} X-ray detections of hot intergalactic gas in three groups of galaxies are reviewed and the resulting baryonic fraction in these groups is reevaluated. We…
Bulge/Disk Segregation in the Universe
Gary A. Mamon
The observations of bulge/disk segregation in the Universe are reviewed with a focus on whether the observed segregation in clusters is local or global, and whether there is bulge-…
Dynamical Theory of Groups and Clusters of Galaxies
Gary A. Mamon
The different dynamical processes (relaxation, dynamical friction, tides and mergers) operating in groups and clusters are reviewed. The small-scale substructure observed in cluste…