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Fig. 1.

image

Multi-component Voigt-profile fitting of metal lines in the sub-DLA at z = 2.187. The normalised ESPRESSO spectrum is shown in black, with the best-fit synthetic spectrum overlaid in red. The blue dashed curve corresponds to the synthetic spectrum computed using the best-fit parameters obtained by Richter et al. (2005) from the analysis of UVES data. We note that their component A here splits into three subcomponents that we call A1, A2, and A3 in Table B.1 and their component F at v ∼ −150 km s−1 appears to be spurious as seen from C IIλ1334.

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