Fig. 8.
Relation between intensity of the Fe III feature at 2080 Å with Fe UV 1785 Å (blue) and Fe IIIλ1914 (red). Squares, up and down triangles, and circles mark the normal, BAL, mini–BAL and RL quasars, respectively. The gray shaded area indicates an approximate detection limit. Blue and red lines mark the orthogonal fit for each case.
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