Comparison of model SEDs with observed photometry of HIP 15429. Black stars indicate photometric measurements (see Table A.2), grey circles show synthetic photometry generated from the model SED in the same filters. Only data points leftwards of the grey dotted line were used in the fitting process. As a grey line, the model fit of the SED is plotted which is the sum of contributions from the narrow-lined stripped star (blue) and Be star companion (red). For the stellar components, example draws from the posterior are shown as thin lines, the median values as the thicker, dashed curves. The inset axis shows a zoom-in on the optical wavelength regime with the Gaia XP spectrum overplotted in green. An infrared excess is visible on the right-hand side of the plot.