Fig. B.4.

See text for a general description of the figure. NGC 4486: in the HST/STIS spectrum, two components are required to model the broad [O I] and [S II] emissions. No broad component is needed to model the Hα line profile. For the Palomar spectrum, two components have been used to reproduce the [S II] and [O I] lines, but a very faint broad component is used for Hα.
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