Metallicity and temperature profiles for several runs at 0.2 au: with an accretion rate of Ṁ_peb = 10⁻⁵ M_⊕ yr⁻¹ (top); a lower accretion rate of Ṁ_peb = 10⁻⁶ M_⊕ yr⁻¹ (center); and a pebble opacity corresponding to mm-sized pebbles (bottom). Profiles are shown when M = 5, 10, and 20 M_⊕ are reached (unless crossover is reached sooner). The value of the diluted core Z_dc – defined as the average over the region where Z > 0.05 – is also indicated. The temperature in the classical core region, which is not modeled, indicates the temperature at the CEB when the material was incorporated.