Top: median model (blue) along with the 1σ and 2σ confidence intervals from the SCARLET chemical equilibrium retrieval to the secondary eclipse spectrum of WASP-80 b (black). The inclusion of a reflected light geometric albedo in this retrieval leads to a contribution from reflected light of ∼30 ppm to explain the data at short wavelengths. For comparison, we show 1D self-consistent models, assuming Bond albedo values of 0 (red) and 0.25 (orange), produced with SCARLET for an atmospheric metallicity of 6 times solar and carbon-to-oxygen ratio of 0.35. We show in green the 1σ confidence region of the best-fit model to the NIRCam secondary eclipse spectrum (purple, binned down to the NIRISS/SOSS resolution) as presented in T. J. Bell et al. (2023). Bottom: cross sections of water (blue), methane (brown), carbon dioxide (green), carbon monoxide (red), and ammonia (purple); the species considered in the free chemistry retrieval over the NIRISS/SOSS wavelength range. The cross sections, shown at a fixed resolving power of R = 100, are computed at a temperature of 800 K and pressure of 10 mbar, roughly corresponding to the photospheric conditions of WASP-80 b. Increasing cross sections correspond to stronger absorption and, thus, lower thermal emission.