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For refcode 2002AJ....123.1826H:
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2002AJ....123.1826H GALAXY MORPHOLOGY IN THE RICH CLUSTER ABELL 2390 J. B. HUTCHINGS, A. SAINTONGE, D. SCHADE, AND D. FRENETTE Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada Received 2001 September 5; accepted 2001 December 17 ABSTRACT We have analyzed images of the field of Abell 2390 obtained with the Canada-France-Hawaii Telescope and the Hubble Space Telescope. The analysis fits models to bulge and disk components of several hundred galaxies, with about equal samples from the cluster and field. We also have assessed and graded asymmetries in the images. The cluster galaxies are compared in different cluster locations and also compared with field galaxies. We find that the central old population galaxies are bulge-dominated, while disk systems have young populations and are found predominantly in the outer cluster. S0 and bulgy disk galaxies are found throughout but concentrate in regions of substructure. Disks of cluster blue galaxies are generally brighter and smaller than those in the field. We find that the cluster members have a higher proportion of interacting galaxies than the field sample. Interactions in the cluster and in the field, as well as cluster infall, appear to inhibit star formation in galaxies. Key words: galaxies: clusters: individual (Abell 2390) - galaxies: evolution - galaxies: fundamental parameters
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