(F814W, F814W-F850LP) diagram of Taurus targets (left panel) and USco targets (right). The Chabrier et al. (2023) isochrones at resp. 3 Myr (Taurus) and 5 and 10 Myr (USco) and 140pc are represented (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. The combined photometry (A+B) and individual components (A, B) of the binary candidate J042705.86+261520.3 are overplotted as labeled black open circles. The suspected background galaxy located 0.′′5 from J164636.12–231337.6 is indicated as a blue dot. A reddening vector A_V=1 mag is also represented.