Figure 10. FIR/radio ratio (q) as a function of redshift (left panel) and the distribution of q for 21 IR (IRAS) detected quasars (right panel) in our radio–IR–optical sample. Note that the median q-value for quasars is lower than the average q obtained for star-forming galaxies, but comparable to that obtained for Seyfert galaxies (see Figure 9). The source with q ∼ −1 is a strong radio source.
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