Gas density ρ (upper left panel), temperature T (upper right panel), radial velocity v (lower left panel), and radial mass-loss rate (lower right panel) as a function of height z above the star along the polar axis. Data is for the run with initial core mass M_core = 100   M_⊙ and radial density slope β =  −2. The snapshot in time (t = 16.7 kyr) is chosen in such a way that the cavity shell has arrived at the same location in both simulations (RT+FLD and FLD only). The lowest density of in the upper left panel is given by the numerical floor value of the hydrodynamics solver.