galaxies in clusters

It is great to have Zabludoff and Zaritsky here! We spoke briefly about the suggestion that galaxies in clusters are strongly affected by the cluster itself. If this happens it is pretty subtle: (1) The difference between the galaxy populations at high density and low appears not to be that disks have been removed at high density, but that bulges have been augmented. (2) Galaxies in clusters do not look like the centers of galaxies not in clusters; ie, they are not stripped field galaxies. You could say duh! to this, but there are still many papers appearing that treat severe stripping as a competetive hypothesis.

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