Adaptive optics imaging survey of the Tucana-Horologium association G. Chauvin, M. Thomson, C. Dumas, J.-L. Beuzit, P. Lowrance, T. Fusco, A.-M. Lagrange, B. Zuckerman and D. Mouillet A&A, 404 1 (2003) 157-162 Published online: 26 May 2003 DOI: 10.1051/0004-6361:20030352