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Fig. A.3
Voigt-profile fit of Al ii and Al iii – associated with an intervening system – and the host-galaxy O i, observed at epoch IV, assuming the best-fitting log N(O i,“b”) = 13.50 value. The Al iiλ1670 line at z = 1.6711 is blended with O iλ1302 at the GRB host-galaxy redshift. The O i line estimate is discussed in Sect. 3.2.3.
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