Disk radius (A), IF radius (B), and Pa α intensity (C) as a function of the projected distance (d_proj) to the ionizing source. The solid black lines correspond to the linear regression. The dashed lines mark the regression at ± 1 σ. The dash-dotted line in panel A corresponds to the correlation obtained with ALMA observation at 850 μm by Eisner et al. (2018). The red triangles in panel B correspond to the IF radii measured by Aru et al. (2024). The purples lines are the expectation from the model of Johnstone et al. (1998) for given mass-loss rates.