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Fig. 6.

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FIR effective radii versus observed-frame 870 μm flux density for our targets and other samples from the literature at similar redshift (z ∼ 2), derived from ALMA observations at similar resolution (∼0.2″). The effective radii are measured assuming a Gaussian profile for the Scholtz et al. (2020) and Chen et al. (2020) samples; an exponential profile for the Gullberg et al. (2019) and Tadaki et al. (2020) sample; and a Sérsic profile with index n between Gaussian and exponential for the Hodge et al. (2016) sample. For the Gullberg et al. (2019) sample, we show the median value of the sample. For SUPER, we show the radii measured from the fit of the visibilities assuming both a Gaussian and an exponential profile. Filled symbols are used for AGN and empty symbols for galaxies with no AGN signature. The Gullberg et al. (2019) sample is a mixture of AGN and non-AGN. The histograms on the right show the distributions of FIR effective radii for AGN (filled histogram) and star-forming galaxies with no AGN (empty histogram), with the corresponding medians.

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