Extinction A_V (mag) from grasil fits (except for those from Perley et al. 2013) plotted against M_star (left panel) and SFR (right). As in Fig. 4, the GRBHs observed by Herschel are indicated by filled (for IR detections) and open (IR non-detections) circles, and the other galaxy samples shown are also coded as in Fig. 4. The curves show the trends for galaxies in the Local Universe (left panel, Garn & Best 2010), and for z ~ 0.8 (right, Garn et al. 2010).