Stellar distribution in the T_eff–M_Ks diagram color-coded by log g (left) and vsin i (right). Only 194724 stars with good spectral S/N (S/N > 30) and good parallax (ω/σ_ω > 5) are shown. The expected correlation between log g with M_Ks at a given T_eff demonstrates the robustness of the spectroscopic log g estimates. The stars with T_eff ≳ 20 000 K and M_Ks ~ 5 mag are hot subdwarfs. In the left panel, a maximal log g value of 5 is displayed in the color bar, and all stars with log g > 5 are shown with the same color as log g = 5 (dark blue).