Appendix A: The catalogue

Example of a part of the catalogue: we show only some photometric entries for sake of concision. The real catalogue reads also the isophotal corrected flux and magnitude, with their errors, a fixed circular aperture (0.6 arcsec radius) flux and magnitude, with their errors, Kron's technique flux and magnitude, with their errors, and SExtractor best choice for photometry (Kron's or isophotal corrected).

Acknowledgements

Thanks to M. Bolzonella for useful discussions and support and R. Abraham for making available the software for computing asymmetry and concentration index. We would like to thank the referee, G. Paturel, for his helpful comments and suggestion. MV acknowledges financial support by Fondazione Cariplo.