Comparison of the Lyα absorption profiles for sightlines A (top) and B (bottom) in the rest-frame of the absorber (zsys = 1.946938) from the Keck/HIRES spectra. The data have been rebinned for visual clarity (black line), and we show the unbinned data as the thin gray line for comparison. The total best-fit profile is shown as the dashed red line. The solid red line shows the H I profile for the bulk of the metal absorption. The dotted vertical line marks the resonant wavelength in the systemic rest-frame.
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