Color–magnitude diagram of (a) Gaia apparent G magnitude, and (b) the absolute magnitude M_G (adopting Gaia parallax). Symbols are the same as those in Figure 4(a). Objects of Sample-I are shown as a density map in (a). Typical errors in colors G_BP–G_RP are presented as horizontal bars to the right. (b) PARSEC isochrones of 400, 500, 600, 700, and 800 Myr are overplotted, with zero extinction corrected and solar metallicity assumed. Stellar masses, per the 800 Myr isochrone are indicated. The inset in (b) shows the MS turn-off with B and V photometry.