galaxies with high central stellar densities

I finished making samples of galaxies with very high central stellar densities. These galaxies are overwhelmingly early-type (elliptical and lenticular and bulge-dominated) galaxies, but there are also some very blue cases. These, I hope, are plausibly galaxies fading to form new early-type galaxies. If they are, I might be able to put limits on the growth rate of the early-type population.