Gaia CMD (left) and Kiel diagram (right) of all association candidates from method I. For the absolute magnitude, M_G, we computed a distance modulus under the assumption that all stars reside at exactly the same distance as their potential former hosts. Dark gray to light gray colors indicate the stars’ metallicity according to the color bar, while the point size mirrors the calculated association probability. The metallicity-dependent polygons used for pre-selection in Paper I are depicted in the right panel. Associated stars which at the same time obey these selection cuts are shown in blue. Red circles depict the four CN-strong stars that are likely associated with M 13 and M 2, respectively.