Fig. 8
Spectra of all 9 NGC 5128 PNe, showing double- or triple-lined [O III] profiles, are displayed over the extent of the 4959 and 5007 Å region. The flux scale is the same for each spectrum (except for the brighter and fainter fluxes rescaled by factors as indicated), but an arbitrary constant background has been applied from each spectrum before plotting. The two lower spectra are for the double-lined PN in globular clusters.
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