The physical properties of Lyα emitting galaxies: not just primeval galaxies? L. Pentericci, A. Grazian, A. Fontana, M. Castellano, E. Giallongo, S. Salimbeni and P. Santini A&A, 494 2 (2009) 553-561 Published online: 04 December 2008 DOI: 10.1051/0004-6361:200810722