Example results of the parameter study for a planet with 3 M_E, T_S = 500 K, iron core, MgO lower mantle, and a H/He mixture for the upper mantle of solar composition. The two axes depict the mass fractions of the mantle layers, and the color code represents the resulting radius (left) and Love number k₂ (right). For the further evaluation of the results, we neglect models with an iron core mass fraction of 0.9 or higher (models below the thin dotted line). The black solid lines are iso-radius lines for models with 1.5, 2, 3, or 4 Earth radii. Models withan Earth-like (mercury-like) Fe/MgO mass ratio lie along the blue (brown) line.