Effects of model parameters on the results. Top row: flux densities at 0.88 and 1.3 mm (F_{0.88 mm} and F_{1.3 mm}, on the left Y-axis) and mass-averaged dust temperature (T_dust, on the right Y-axis) as a function of different model parameters. Bottom row: underestimation factor (Λ_{0.88 mm} and Λ_{1.3 mm}) as a function of different model parameters. When one particular parameter was explored, all the remaining parameters were fixed to their fiducial values listed in Table 1. The red dashed lines show the underestimation factors Λ_{1.3 mm} that were calculated by assuming a constant T_dust = 25 (L_⋆/L_⊙)^0.25 = 24.5 K and κ_{1.3 mm} = 2.3 cm² g⁻¹.