Fig. 9
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BPT diagram for distinguishing type 2 and star-forming galaxies. The error bars are all less than 0.009 and not visible in the plot. Note that all of the sources, except for SDSS J143010.96+230134.7, are above the theoretical line of Kewley et al. (2013) (right part of the graph separated by the blue line), which serves to discriminate between starburst regions and harder ionization sources.
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