Fig. 6.
Total radio excess parameter qTIR for the sub-set of VLBI sources with reliable estimates of the total IR luminosity available. Over-plotted are the radio-infrared correlation evolutions from Magnelli et al. (2015) and Delhaize et al. (2017). The filled regions correspond to the 1σ scatter, while the dotted lines correspond to the 3σ scatter. The integrated qTIR parameter detects all but one VLBI source and is restricted to just a small number of sources due to their weak FIR emission.
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