A Lyman-α blob in the GOODS South field: evidence for cold accretion onto a dark matter halo K. K. Nilsson, J. P. U. Fynbo, P. Møller, J. Sommer-Larsen and C. Ledoux A&A, 452 3 (2006) L23-L26 Published online: 06 June 2006 DOI: 10.1051/0004-6361:200600025