Analysis of Galactic late-type O dwarfs: more constraints on the weak wind problem W. L. F. Marcolino, J.-C. Bouret, F. Martins, D. J. Hillier, T. Lanz and C. Escolano A&A, 498 3 (2009) 837-852 Published online: 19 March 2009 DOI: 10.1051/0004-6361/200811289