Characterization of the Twa22 AB system. A new calibrator for evolutionary tracks? M. Bonnefoy, G. Chauvin, C. Dumas, A-M. Lagrange, H. Beust, B. Zuckerman, J-L. Beuzit, F. Allard and I. Song EAS Publications Series, 41 (2010) 95-98 Published online: 08 January 2010 DOI: 10.1051/eas/1041005