Simulated DCs for the Na i lines (D₂ in the left column and D₁ in the right column) for effective temperatures of 4000 K, 5000 K, and 6000 K. Normalized feature light curves where extracted in four bands with half-widths 0.1 Å, 0.375 Å, 0.75 Å, and 1.5 Å centered the respective sodium line. The resulting DCs are plotted using solid (black), dashed (red), dotted (green), and dash-dotted (blue) lines in the same order.