(i, i-z) diagram of Taurus members (left panel) and USco members (right) observed at high spatial resolution using either HST or adaptive optics (blue dots) by Todorov et al. (2010, 2014); Bouy et al. (2006); Biller et al. (2011); Kraus & Hillenbrand (2012); Kraus et al. (2006); Konopacky et al. (2007), as well as this work. The Chabrier et al. (2023) isochrones at 3 Myr (Taurus) and 5 and 10 Myr (USco) 140pc are represented by a dashed green line and the corresponding masses are indicated on the right vertical axis. The 5 and 10 Myr isochrones overlap almost perfectly and are represented as one in the USco panel. Resolved binaries are over-plotted as open red circles. A reddening vector A_V = 2 mag is also represented. See also Table C.2 and C.1.