Effects of the central luminosity, L_★, on the radiative transfer results at 0.87 mm, with the fixed parameters of a_max = 10 µm and f_high−J = 1. This corresponds to set III of Table 1. Each column is one radiative transfer run of POLARIS, with L_★ = 1, 5, 20, 50, and 100 L_⊙. Each row is a quantity provided by the radiative transfer, from the first to the sixth row: total intensity Stokes I, polarized intensity (P), polarization fraction (Ƥ_frac), 2D temperature slice obtained at the center, 2D radiation field slice obtained at the center (u_rad/u_ISRF), and the 2D slice of the a_align parameter obtained at the center.