Clearly many of the cluster candidates show features which are typically associated with clusters. $27\%$ of the cluster candidates contain likely FRI sources and up to $53\%$ contain diffuse emission. $65\%$ of the cluster candidates contain an example of either a likely FRI or diffuse emission (assuming all non-detections are diffuse emission). Even before optical and infrared imaging had been conducted this was a good indication that we had found real high-redshift clusters of galaxies. The initial aim of the ATCA observations was to get a better positional accuracy, however it also told us a lot about the morphology of the cluster sources.

Helen Buttery 2004-08-02