
%0 Journal Article
%A Pimbblet, Kevin A. 
%T At the Vigintennial of the Butcher&#8211;Oemler Effect
%J Publications of the Astronomical Society of Australia
%D 2003/09/19
%V 20
%N 3
%P 294-299
%K galaxies: evolution &#8212; galaxies: clusters: general &#8212; cosmology: observations
%R https://doi.org/10.1071/AS03043
%U https://www.publish.csiro.au/paper/AS03043 
%X In their study of the evolution of galaxies within clusters, Butcher and Oemler discovered evidence for a strong evolution in star-formation rate with redshift. Later studies confirmed this conclusion and uncovered several aspects of the effect: photometric, spectroscopic, and morphological. This article reviews a broad sample of these works and discusses selection effects, biases, and driving mechanisms that might be responsible for the changes in star-formation rate. 
