Fig. 4
Left panel: the Ni ii absorption features. Right panel: the N v, Si iii, S ii and Fe iii absorption features. Solid lines represent the two Voigt components, best-fit model. Vertical lines identify the component velocities. The zero point has been arbitrarily placed at the redshift of the red component (z = 2.1071). The blue component of Si iii is blended with absorption from the Lyα forest.
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