SED-derived M_dust/M_star ratios in logarithmic space plotted against (SED-derived) SFR, 12+log(O/H), and (SED-derived) IRX. The middle panel shows the PP04N2 calibration for 12+log(O/H) as described in the text. The dashed horizontal lines in the left and middle panels show the means of Log(M_dust/M_star) for each SED-fitting algorithm (dark orange: CIGALE; blue: GRASIL; red: MAGPHYS). The fits of (Log) M_dust/M_star vs. IRX for the individual SED algorithms are shown as colored solid lines in the right panel; the gray region gives the ±1σ interval around the mean of the three individual regressions. As in previous figures, open symbols correspond to galaxies with low sSFR [Log(sSFR/yr⁻¹) ≤ −10.6], and filled symbols to high sSFR [Log(sSFR/yr⁻¹) > −10.6].