Fig. 4
Velocity shifts of the Hβ (blue), Mg II (red) and C IV (green) lines with respect to z = 3.911. The centroids of the best fit Gaussian profiles resulting from our analysis (Hβ and Mg II) and Saturni et al. (2016, C IV, based on high-resolution HST/STIS data) are indicated by vertical lines with the corresponding uncertainties (shaded vertical bands).
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