Absorption features in the QSO J1439+1117 spectrum in velocity space, with zero corresponding to the systemic velocity of galaxy J1439B. Normalized flux is shown on the y axis of each panel. Top panels: Fe II, Mg II, Mg I, and Na I transitions in the FIRE spectrum. The shaded areas represent the spectral regions used for EW calculations of the component at −47 km/s (shaded blue areas), or for the sum of the components at −47 and −164 km/s, when blended (shaded red areas). Bottom panels: O I, Fe II, and Al II in the higher-resolution UVES data. Vertical dashed lines mark the absorbers used to fit the H I distribution in Srianand et al. (2008) and Noterdaeme et al. (2008).