Diagnostic diagram with the NIR emission line ratios H₂(1–0)S(1)λ2.122 μm/Brγ and [Fe II] λ1.644 μm/Brγ proposed by Colina et al. (2015). Apertures in the circumnuclear ring are shown with blue circles and the aperture from the nuclear region is shown by a gray diamond. Contours denote regions for young star formation, supernovae, and compact AGN, while solid lines denote upper limits for young star formation and AGN, both derived from integral field spectroscopy data (Colina et al. 2015). Dashed lines denote upper limits for star formation and AGN derived from slit spectroscopy (Riffel et al. 2013).