O stars with weak winds: the Galactic case F. Martins, D. Schaerer, D. J. Hillier, F. Meynadier, M. Heydari-Malayeri and N. R. Walborn A&A, 441 2 (2005) 735-762 Published online: 19 September 2005 DOI: 10.1051/0004-6361:20052927