Kiel diagram (T_eff vs. log₁₀g) for anti-solar DR candidates at solar metallicity. The conservative and optimistic samples are illustrated with green diamonds and circles, respectively. The circled dot represents the Sun, and spectral types are indicated on the T_eff-axis. Spectral types are defined here with the standard Harvard Spectral Classification (see, e.g., Habets & Heintze 1981 for more details). Histograms on the x- and y-axes correspond to the T_eff and log₁₀g distributions for the candidates shown in green. We illustrate all rotators from the S19-21 catalog with gray dots for comparison.