Fig. 7.
Two BPT diagrams used to classify the emission-line galaxies as: Seyfert, LINER, composite, and ambiguous galaxies. Left: solid line shows the Kauffmann et al. (2003) selection criteria. Kewley et al. (2006) classification is shown as the dashed line. Right: solid lines separate the SF galaxies from the active galaxies and the dashed lines represent the Seyfert-LINER demarcation.
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