Color–magnitude diagrams for all stars in the studied region (left: (i, r − i); right: (H, H − K)). Only data with errors less than 0.1 mag on colors and magnitudes are shown. Tracks and isochrones (ages of 1, 3, 10, 30, 100, 10 000 Myr) as in Fig. 4, assuming a distance of 1250 pc and extinction A_V = 1.085. The magenta isochrones correspond to 1 M_⊙ stars. Dark-red points indicate Hα-emission stars, light-red dots low-reddening M stars, and black dots high-reddening M stars (giants). Dark-green dots are high-reddening M stars which by virtue of their position in the CMD are included in the low-reddening sample.