Surface density, midplane temperature, and aspect ratio profiles of the different circumbinary systems that we considered. Solid lines correspond to models that include viscous heating, whereas dashed lines are for models without viscous heating. All models include irradiation and shock heating. In the surface density profiles, the markers indicate the location of the ice line, which is also represented as a horizontal dashed line in the temperature plots. The dashed black lines in the surface density plots show the values of α in the viscously heated models – see the right-hand vertical axis.