Comparaison of the relation log ₁₀(f60   μm/f100   μm) − log ₁₀L_dust given by IR SEDs of DH02 after the fit to the data, with the values given by local relations and models. Upper and lower solid red lines represent local relations of Chapman et al. (2003) and Marcillac et al. (2006), respectively. We overplot models of CE01 (green dotted line), Chapin et al. (2009a) (dashed black line), and Valiante et al. (2009) (dash-dotted black line). AGN detections are shown as red stars.