Integrated SED over the RO-1001 field (see Table 2 for the photometric points). The cyan, purple, and red lines are BC03 stellar template, DL07 cold (ambient) dust, and DL07 warm (PDR) dust, respectively. The radio excess is within a factor of two of the average radio–IR correlation, and is therefore not very significant, but may be associated with galaxy ‘C’, which shows a somewhat elongated radio morphology suggestive of a weak jet. Instead, the SED leaves no room for the presence of AGN torus emission in the mid-IR, with an upper limit on its bolometric luminosity of L_AGN < 2 × 10⁴⁵ erg s⁻¹.