M. Della Valle (1), R.Gilmozzi (2), N.Panagia (3), J.Bergeron (4), P.Madau (5) J.Spyromilio (2), P.Dierickx (6) ((1)INAF-Arcetri Astrophysical Observatory, Largo E. Fermi, 5, Firenze, (2)European Southern Observatory, Santiago, Chile, (3) ESA/Space Telescope Science Institute, Baltimore, (4)Institut d'Astrophysique de Paris - CNRS, Paris, (5)Department of Astronomy and Astrophysics, University of California, Santa Cruz, (6)European Southern Observatory, Garching, Munchen)
