Atmospheric fitting of HD 167665B with BT-Settl models. Top: corner plot of the retrieved parameters: T_eff, log ɡ, radius, parallax, SPHERE/IFS scaling factor, log(L/L_⊙), and mass. Bottom: comparison of the best-fit model spectra (black and gray) and photometry (open blue squares) with the measured SED (filled data points). The black model spectrum corresponds to the best-fit solution, whereas the gray model spectra were randomly drawn from the posterior distributions. The fit residuals are shown in the bottom panel and the filter transmission curves of SPHERE/IRDIS in the top panel.