Contour plot of the Δχ2 values for each of fitted host-intrinsic visual extinction AV and redshift (z) parameters for the best-fit power-law index of β = 0.45. For three degrees of freedom, the significance levels of 1σ (68.27%), 2σ (95.45%), 3σ (99.73%), and 4σ (99.99%) correspond to Δχ2 = 3.53, 8.02, 11.35, and 21.11, respectively. As shown in the left inset, the GROND SED is best fit with the SMC extinction curve, a power-law slope of β = 0.45, no dust extinction (AV = 0.00 mag), and a photometric redshift of . In the inset on the right we also show the corresponding redshift probability density function. The gray shaded area indicates the 1σ confidence interval.
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