Same as Fig. 6 but for the simulation with accretion heating (Case III). Two embryos are located at x = 5.55,y = 4.65 AU and x = 4.35,y = 7.17 AU; two other embryos are located outside the range. The Σ distribution shows that there are trails of underdense gas stretching outwards from the embryos, trailing their orbital motion. The shape of cavities in the pebble component is affected by the eccentric orbits of embryos. Unlike in Fig. 6, the concentration peak at the embryos’ location is somewhat blurred in both gas and pebbles.