Effective temperature of the host stars vs. instellation at the simulated exoplanet for the volume-complete SN sample. For comparison, we overplot the distribution of the observed exoplanets (Christiansen et al. 2025) as black dots and the solar-system planets as cyan diamonds. The left panel shows the entire sample, while the other three panels show the distribution of each planet category (Earth-like, SE and Neptunians, giant planets). The limits we adopted for the definition of the CHZ are plotted in dark and light green (see Sect. 3.4).