Colour Segregation in Abell Catalogue – Further Work

See first of all the ColorSegregation exercise.

What really needs to be done here is to go through the entire matched Abell catalogue programmatically and work out the search radius and then perform the Second query for each cluster. So perhaps the AbellInSdss should be extracted as a VOTable rather than csv – we have a reader for that. The portalclient in dev shows how to send a query to the portal and write the result to a file so putting those together is not too bad. Using the redshift the radius would have to be calculated in a manner shown in ColorSegregation.

So now we might have a bunch of files for each cluster but we need to combine them. For that we would need to recomputed the distances from the center on some standard scale i.e. relative to the redshift of the individual clusters.

Then we should be able to reload the whole dataset and get another plot similar to that for the single galaxy. His again may not give us a good plot because there are different cluster types (listed in the Abell.xml) so we may actually want to do plots per type.