A comparison between the average radius measured by the authors (x-axis) and the one measured using the IRAF task ellipse (y-axis) in the optical (left) and FIR (right) images. All radii are normalised to the optical semimajor axis taken from Cortese et al. (2012). The solid lines represent the linear fits to the data. The analytic expression of the evaluated linear fit is displayed in the top left of both diagrams.
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