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Fig. 2

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UV-to-NIR spectrum of PKS 0447–439 obtained with X-shooter after flux calibration and telluric corrections. The spectrum is dominated by the non-thermal emission from the nucleus and is well described by a power law (see Table 9 for details). It shows no spectral feature, except the Ca II H&K doublet associated with our own Galaxy. The typical atmospheric transmission for Paranal is shown in the upper panel.

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