Fig. 1
PKS 0048-097 overall mean spectrum. Atmospheric absorption are labelled by ⊕ while calibration artefacts (detectable in the two-dimensional image of the spectrum) are marked with Δ. Emission lines above ~3σ confidence intervals of the S/N of the spectrum are marked with a single vertical line. The expected position of Hβ at z = 0.635 is marked with a dashed line.
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