Metallicity-age distribution and galactic positions of the observed stars. Top: [Fe/H] vs. age distribution for the proposed sample. The iron values are from APOGEE with the ages determined in this work. Bottom: Cartesian Galactic coordinates X, Y of the targets. On the right, Galactic Z and galactocentric radii R_GAL. The color-coding represents the G magnitude of the sample derived from Gaia DR3. The black lines indicate the position of the Sun (X_⊙; Y_⊙; Z_⊙) = (0; 0; 0) and R_GAL = 8.34 placed at kiloparsec scale.