Fig. 8.
Near-infrared diagnostic diagram with the line ratios log(H2λ2.12 μm/Brγ) vs. log([Fe II]λ1.644 μm/Brγ). The contours show the regions where young star formation, supernovae, and compact AGN are dominant and the solid lines denote the upper limits for young star-forming regions and AGN (from Colina et al. 2015). The dashed lines show the upper limits from another study by Riffel et al. (2013).
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