Rotational periods of solar-mass young stars in Orion E. Marilli, A. Frasca, E. Covino, J. M. Alcalá, S. Catalano, M. Fernández, A. Arellano Ferro, E. Rubio-Herrera and L. Spezzi A&A, 463 3 (2007) 1081-1091 Published online: 19 December 2006 DOI: 10.1051/0004-6361:20066458