Intrinsic temperatures for planets between 0.5 and 10 Jupiter masses. (a) Intrinsic temperature with equilibrium temperature showing a linear increasing trend, with stellar age indicated qualitatively by point size. (b) Intrinsic temperature with mass, showing a greater spread at higher mass values, stellar age indicated qualitatively by point size. (c) Intrinsic temperature with stellar age, showing planets cooling with age, irradiated planets maintain a higher intrinsic temperature. Interpolated trends are shown for 1000, 1600, and 1900 K irradiation temperatures. (d) Intrinsic temperature with radius showing the contribution to the radius from the irradiation. The list of planets used can be found in the Appendix A.1.