Averaged envelope structure for an envelope undergoing solid accretion at a rate of 10 M_E/Myr (black) and an envelope not undergoing solid accretion (blue). Shown are the azimuthally averaged temperature and density in the planetary midplane (RADL27k0.01,RADL0k0.01). The diamond indicates the gas scale height H of the protoplanetary disk at the location of the planet, the circle the Hill radius r_H of the 5 M_E core, the square the Bondi radius r_B, and the triangle the estimated position of the radiative-convective boundary r_rcb. The top panel (A) displays the temperature. The bottom panel (B) shows the azimuthally averaged density in the midplane. In the background we also show the density structure for a cooled-down isothermal planet with a gray dotted curve. An adiabatic convective interior, a polytrope with γ = 1.4, is shown with the purple dotted line up to r_rcb.