Mass ratios of binaries as a function of projected binary separation, indicating whether both binary components are accreting (filled circles, CC), neither component is accreting (open circle, WW), or either component shows signs of accretion (half-open circles = CW and WC). This plot only contains 13 targets, since masses could not be derived for all binary components in the sample. For some target binaries with mass ratios close to 1, the primary (as estimated from the NIR colors and listed in Table 5) turned out to be the less massive component. The mass ratios of those targets were calculated as the inverse leading to q-values  ≲ 1.