Two-dimensional dust temperatures in the envelope-only models (left column) and in the envelope-plus-disk models (middle column). The white contours show the location in which the temperature is 70 K as an indication of the approximate temperature at which methanol is sublimated at the densities of the models using the gas-grain balance model. The right column shows the comparison of the mid-plane temperature in the envelope-plus-disk models and the envelope-only models. The rows from top to bottom present the fiducial model, the fiducial model when the dust grains have a high mm opacity, the fiducial model with a stellar luminosity of 32 L_⊙, the fiducial model when the envelope mass is 5 M_⊙, and the fiducial model with a disk radius of 20 au.