The galaxy population of the complex cluster system Abell 3921 (Corrigendum)

1 Institute for Astroand Particle Physics, University of Innsbruck, Technikerstr. 25/8, 6020 Innsbruck, Austria e-mail: florian.pranger@uibk.ac.at 2 Laboratoire Lagrange, UMR7293, Universite de Nice Sophia Antipolis, CNRS, Observatoire de la Cote d’Azur, 06300 Nice, France 3 Dipartimento di Fisica, Universita degli Studi di Torino, via P. Giuria 1, 10125 Torino, Italy; Istituto Nazionale di Fisica Nucleare (INFN), Sezione di Torino, via P. Giuria 1, 10125 Torino, Italy 4 School of Physics, University of Sydney, NSW 2006 Sydney, Australia 5 Leiden Observatory, Leiden University, 2300 RA Leiden, The Netherlands