Comparison of the fiducial DM Tau DALI model and a model with no inner dust disk (δ _dust1 = δ _dust2 = 10⁻⁵⁰) with the DM Tau observations, as described in Section 5.2.1. Top row: deprojected and azimuthally averaged millimeter-continuum intensity, and SED zoomed in on the near-to-mid infrared region. Middle row: deprojected and azimuthally averaged intensity for the moment 0 maps of the ¹²CO, ¹³CO, and C¹⁸O lines.