The magnetic field of the pre-main sequence Herbig Ae star HD 190073 C. Catala, E. Alecian, J.-F. Donati, G. A. Wade, J. D. Landstreet, T. Böhm, J.-C. Bouret, S. Bagnulo, C. Folsom and J. Silvester A&A, 462 1 (2007) 293-301 Published online: 02 November 2006 DOI: 10.1051/0004-6361:20066264