Conclusions

In this chapter we have described our results of fitting 1D surface brightness profiles of galaxies to the radio and control samples. In particular we have shown that:

1. The distribution of the ratio for the control sample and radio galaxies show important differences. Control galaxies seem to have a quiet history whereas the radio galaxies are likely to have undergone recent star formation in the central region.
2. Color gradients are reflected in the scale length ratio. However, the latter are more sensitive at describing the average variation of color in galaxies.
3. Extrapolated profiles confirm enhanced star formation in the central regions of radio galaxies.

In the next chapter we turn to discussing the disky galaxies.