Dust attenuation in FUV versus observed FUV luminosity and stellar mass. Galaxies with no IR data are plotted as small dots, those with MIPS data with medium dots, and those with MIPS and PACS detection with large dots. Upper panel: A_FUV versus log (L_FUV), colour coded with log (M_star). The average values of A_FUV per bin of log (L_FUV) are overplotted with their standard dispersion, calculated by accounting for the uncertainty on the determination of A_FUV. Lower panel: A_FUV versus log (M_star), colour coded with log (L_FUV). The average values of A_FUV per bin of log (M_star) are overplotted with their standard dispersion (blue solid line). Relations from the literature and discussed in the text are overplotted as short dashed line (Martin et al. 2007), dashed line (Buat et al. 2009) at z ≃ 1, and dot-dashed line (Pannella et al. 2009) at z ≃ 2.