Density distribution in a slice through the orbital plane of model v05e50 at four consecutive orbital phases within one orbital period (top). The centre-of-mass is marked by a white square. The black arrow indicates the direction from the companion to the location of the AGB. Online movie 2 shows the time-evolution of this density distribution during the final four orbital periods of the simulation, in a co-rotating frame. Middle: more zoomed-in density distribution in a slice through the orbital plane at the same four consecutive orbital phases, but the coordinate frame is rotated and translated such that the companion sink particle (shown as a black dot) is located at (0, 0), and the AGB star on the x < 0 side of the y = 0 axis. Bottom panel gives the radial velocity distribution of the accretion disk in model v05e50 at the same timesteps, and in the same coordinate frame as in the middle row. The companion has a zero-velocity (0, 0, 0). The estimated radius of the circumstellar disk (calculated in Sect. 4.4) is shown as a dotted circle in the middle and bottom rows.