Exploring brown dwarf disks in ρ Ophiuchi A. Natta, L. Testi, F. Comerón, E. Oliva, F. D'Antona, C. Baffa, G. Comoretto and S. Gennari A&A, 393 2 (2002) 597-609 Published online: 23 September 2002 DOI: 10.1051/0004-6361:20021065