Hertzsprung-Russell (left panel) and color-distance (middle panel) diagrams for our sample of 140 dwarfs (□), 29 subgiants (△), and 140 giants (°). The derived stellar parameters are also shown in a log g vs. T_eff diagram (right panel) for comparison. Filled symbols represent stars with detected planets. The distance limit of 100 pc is represented by the dotted line.