A 52 hours VLT/FORS2 spectrum of a bright z ~ 7 HUDF galaxy: no Ly-α emission E. Vanzella, A. Fontana, L. Pentericci, M. Castellano, A. Grazian, M. Giavalisco, M. Nonino, S. Cristiani, G. Zamorani and C. Vignali A&A, 569 (2014) A78 Published online: 26 September 2014 DOI: 10.1051/0004-6361/201424285