Rotational studies in the Orion Nebula Cluster: from solar mass stars to brown dwarfs M. V. Rodríguez-Ledesma, R. Mundt and J. Eislöffel A&A, 502 3 (2009) 883-904 Published online: 15 June 2009 DOI: 10.1051/0004-6361/200811427