Multiwavelength observations of a rich galaxy cluster at z 1 - The HST/ACS colour–magnitude diagram
J. S. Santos, P. Rosati, R. Gobat, C. Lidman, K. Dawson, S. Perlmutter, H. Böhringer, I. Balestra, C. R. Mullis, R. Fassbender, J. Kohnert, G. Lamer, A. Rettura, C. Rité and A. Schwope