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Galaxy morphology in rich clusters - Implications for the formation and evolution of galaxies
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1980
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The study examines galaxy populations in 55 rich clusters to investigate how morphology relates to formation and evolution. The authors analyze the local density–morphology relation, proposing that it reflects the long timescale of disk formation rather than spiral stripping. Higher local density is associated with a larger elliptical and S0 population, fewer spirals, and brighter spheroidal components. Published in The Astrophysical Journal (March 1980), DOI 10.1086/157753, with 3250 citations and 44 references.
view Abstract Citations (3250) References (44) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Galaxy morphology in rich clusters: implications for the formation and evolution of galaxies. Dressler, A. Abstract The paper presents a study of the galaxy populations in 55 rich clusters along with a discussion of the implications for the formation and/or evolution of different morphological types. A well defined relationship is found between local galaxy density and galaxy type, which indicates an increasing elliptical and S0 population and a corresponding decrease in spirals with increasing density. Attention is given to evidence which contradicts the interpretation that these gradients in population result from the production of S0 galaxies when spirals are swept of disk gas by an IGM. In addition, as an alternative to the hypothesis of spiral sweeping, it is suggested that the local density/morphological-type relation reflects the long time scale associated with the formation of the disk component of galaxies. Finally, the data also indicate a trend of increasing luminosity of the spheroidal component with increasing local density. Publication: The Astrophysical Journal Pub Date: March 1980 DOI: 10.1086/157753 Bibcode: 1980ApJ...236..351D Keywords: Elliptical Galaxies; Galactic Clusters; Galactic Evolution; Galactic Structure; Spiral Galaxies; Astronomical Maps; Density Distribution; Interstellar Gas; Telescopes; Universe; X Ray Astronomy; Astrophysics full text sources ADS | data products SIMBAD (56) NED (56)