Computer Science
Scientific paper
Jan 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988s%26t....75...16s&link_type=abstract
Sky and Telescope (ISSN 0037-6604), vol. 75, Jan. 1988, p. 16-22.
Computer Science
1
Elliptical Galaxies, Globular Clusters, Milky Way Galaxy, Spiral Galaxies, Virgo Galactic Cluster, Morphology, Spatial Distribution
Scientific paper
The classification of galaxy clusters is discussed. Consideration is given to the classification scheme of Abell (1950's), Zwicky (1950's), Morgan, Matthews, and Schmidt (1964), and Morgan-Bautz (1970). Galaxies can be classified based on morphology, chemical composition, spatial distribution, and motion. The correlation between a galaxy's environment and morphology is examined. The classification scheme of Rood-Sastry (1971), which is based on clusters's morphology and galaxy population, is described. The six types of clusters they define include: (1) a cD-cluster dominated by a single large galaxy, (2) a cluster dominated by a binary, (3) a core-halo cluster, (4) a cluster dominated by several bright galaxies, (5) a cluster appearing flattened, and (6) an irregularly shaped cluster. Attention is also given to the evolution of cluster structures, which is related to initial density and cluster motion.
Rood Herbert J.
Struble Mitchell F.
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