Calibrated CMD of Sgr. Black dots are Sgr selected members. Stars screened out as contaminants are shown in gray. The RR Lyrae and spectroscopically observed stars selected as Sgr members are shown in blue and red, respectively. Two isochrones from the PARSEC stellar evolution library have been drawn over the CMD: [Fe/H] = −3.3, 13.5 Gyr (orange) and [Fe/H] = −0.4, 5 Gyr (light blue).