The UDF05 follow-up of the Hubble Ultra Deep Field. I. The faint-end slope of the Lyman break galaxy population at z similar to 5

PA Oesch, M Stiavelli, CM Carollo, LE Bergeron, AM Koekemoer, RA Lucas, CM Pavlovsky, M Trenti, SJ Lilly, SVW Beckwith, T Dahlen, HC Ferguson, Jonathan P Gardner, C Lacey, B Mobasher, N Panagia, H-W Rix