A mass threshold in the number density of passive galaxies at z ~ 2 V. Sommariva, A. Fontana, A. Lamastra, P. Santini, J. S. Dunlop, M. Nonino, M. Castellano, H. Ferguson, R. J. McLure, A. Galametz et al. (10 more) A&A, 571 (2014) A99 Published online: 17 November 2014 DOI: 10.1051/0004-6361/201322301