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Fig. 18

image

Combined 1D X-shooter spectrum of J0000+0048 in black. The data has been replaced by the continuum over the Ly α forest. The yellow squares indicate the photometry in u, g, r, i, z, Y, J, H, K, and W1 bands (left to right). The uncertainty on the photometry is smaller than the extent of the square marker. The blue line shows the unreddened, smoothed template by Selsing et al. (2016), and the red line indicates the same template reddened by the best-fit extinction curve by an amount of AV = 0.23. The red shaded area marks the strength of the 2175 Å bump. The upper edge of the shaded region corresponds to an extinction curve with no 2175 Å bump.

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