Left: radial distribution of the dust surface brightness models for the combined 2017, 2018 and 2023 dataset. Models are calculated at a wavelength of 11 μm, with 1σ error bars derived from the MCMC posteriors. The solid line represents the predicted surface brightness from the P-R drag model for an outer belt extending from 6 au to 9 au, with a mass of 7 × 10⁻⁶ M_⊕. The dust composition is considered to be 1/3 silicate and 2/3 carbon. Right: SED of the dust from the P-R drag model.