SFR (bottom panel) and M_star (top panel) estimated from a single fit assuming a polar dust obscuration with an SMC extinction curve, for sources first identified with either polar dust described with a G04 curve (green empty circles) or no polar dust (black dots). x-axis: Parameters estimated from the initial analysis (cf. Sect. 3), y-axis: Parameters estimated with the single fit. The average 1σ uncertainty on the estimated parameters is indicated as a cross.