Synthetic dust-attenuated spectra of s01143 source, generated by using the SED fitting method, assuming the fiducial SFH, and adopting one of the empirical dust curves (top-left). The a priori adopted dust curves are the Calzetti attenuation law, and the SMC and the MW extinction curves (from top to bottom panels, respectively). The model spectra of our source are shown in blue, with flux uncertainties illustrated in pale blue. Orange and pale orange colors indicate the best-fit posterior spectra with 1er uncertainties, respectively. Bottom-left panel shows the residuals of the best fit on the synthetic spectra Δf_λ with 1σ uncertainties. Right: The corresponding best-fit dust attenuation curve with 1σ uncertainties, on empirical dust curves. Drude model fits to empirical curves: the Calzetti, the SMC, the LMC, and the MW curves are shown as green, red, purple, and brown dashed lines, respectively.