Distribution of the absolute G magnitude (M_G) of our targets. The published HW Vir stars are shown in white; the ATLAS targets are displayed in gray; and the OGLE targets with parallaxes with errors less than 25% are displayed in black. For the rest of the OGLE targets we used the distances by Bailer-Jones et al. (2018), shown in red. The red line marks M_G = 6.5 mag, above which the primary stars are faint enough that they are more likely to be white dwarfs.