Gas temperature structure in the IRS 48 disk model with (left) and without (right) a dust trap between 60 and 80 AU. The dust trap midplane is up to ~30 K colder than the corresponding region in the non-dust trap side of the disk. At z > 10 AU the dust trap model is warmer than the non-dust trap side due to the intense radiation field above the dust trap. The gas and dust temperature are similar below the T_gas = 70 K contour.

Note: these figures are zoomed in on the dust trap region. The vertical black lines in the left hand panel indicate the inner and outer radius of the dust trap.