Protoplanetary disk evolution and stellar parameters of T Tauri binaries in Chamaeleon I S. Daemgen, M. G. Petr-Gotzens, S. Correia, P. S. Teixeira, W. Brandner, W. Kley and H. Zinnecker A&A, 554 (2013) A43 Published online: 03 June 2013 DOI: 10.1051/0004-6361/201321220