The XMM-Newton Optical Monitor survey of the Taurus molecular cloud M. Audard, K. R. Briggs, N. Grosso, M. Güdel, L. Scelsi, J. Bouvier and A. Telleschi A&A, 468 2 (2007) 379-390 Published online: 05 December 2006 DOI: 10.1051/0004-6361:20066320