Fig. 12
N iiiλλ4634−4640−4642 for three versions of model s6a, as calculated by cmfgen. Solid black: standard version; dotted/red: photo cross-sections for level 3d without resonances (i.e., no DR); dashed/blue: N iii resonance line at 374 Å forbidden to be affected by O iii. For the latter model, the optical triplet lines remain in absorption!
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