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Dynmamical Effects on Galaxies in Clusters

Published online by Cambridge University Press:  25 May 2016

Ben Moore ,
Neal Katz  and
George Lake
Ben Moore
Affiliation:
Department of Astronomy, University of Washington, Seattle, WA 98195, USA
Neal Katz
Affiliation:
Department of Astronomy, University of Washington, Seattle, WA 98195, USA
George Lake
Affiliation:
Department of Astronomy, University of Washington, Seattle, WA 98195, USA

Extract

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For nearly 20 years, we've known that clusters at z≳0.3 have a substantial population of “blue galaxies” seen only as fuzzy blobs in ground based images (Butcher & Oemler 1978, 1984). Hubble Space Telescope (HST) images reveal that these “fuzzy blue blobs” are low luminosity, often disturbed, spiral galaxies “Sp” (Dressier et al 1994a,b, Couch et al 1994). Today, rich galaxy clusters are dominated by elliptical “E” and lenticular “S0” galaxies (Dressier 1980), mostly low luminosity dwarfs.

Type
Mergers in the Local Universe
Information
Symposium - International Astronomical Union , Volume 171: New Light on Galaxy Evolution , 1996 , pp. 203 - 206
Copyright
Copyright © Kluwer 1996 

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