Fig. 4
Template spectra obtained by stacking individual normalized rest-frame spectra (whose number is given in parenthesis) in six bins of nuclear classification. The vertical dashed lines mark the position of [NII] λ 6548, Hαλ 6563, [NII] λ 6584, and the [SII] doublet λ 6718 and λ 6733. “LOI sample (top panel); “COMA sample” (bottom panel).
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