Spatially resolved mid-infrared observations of the triple system T Tauri Th. Ratzka, A. A. Schegerer, Ch. Leinert, P. Ábrahám, Th. Henning, T. M. Herbst, R. Köhler, S. Wolf and H. Zinnecker A&A, 502 2 (2009) 623-646 Published online: 15 June 2009 DOI: 10.1051/0004-6361/200811390