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Fig. 4.

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SFR as a function of stellar mass for our sample of unobscured QSOs. The values were obtained through SED fitting with AGNFITTER. For comparison, we have plotted the low–redshift Palomar–Green QSOs from Shangguan et al. (2020b) (grey), high–redshift obscured QSOs (grey, empty circles) from the compilation presented in Perna et al. (2018), a sample of high–redshift SMGs (black stars) and z = 1 − 3 SFGs from ASPECS (blue crosses, Boogaard et al. 2020). The dashed black line marks the main–sequence at z = 1.5 as parameterised by Speagle et al. (2014), with the one sigma scatter shown by the shaded grey area. All data points have been scaled to z = 1.25 for comparison and corrected for magnification where necessary. Most of our targets lie on or above the main–sequence. Their stellar masses are lower than most of the higher–redshift obscured QSOs, but comparable to low–redshift unobscured QSOs and the ASPECS SFGs.

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