A multiwavelength investigation of the massive eclipsing binary Cygnus OB2 #5 N. Linder, G. Rauw, J. Manfroid, Y. Damerdji, M. De Becker, P. Eenens, P. Royer and J.-M. Vreux A&A, 495 1 (2009) 231-241 Published online: 22 December 2008 DOI: 10.1051/0004-6361:200810974