Spectrum of the central region from the G235H/F170LP cube. In the upper panel, we report in blue the spectrum around the [O III] λ5007 Å emission, extracted from a circular aperture with a radius of 0.15″ in the central region with the associated error (gray-shaded region). In black we report the best-fit model resulting from the sum of the dashed lines. The red dashed line represents the best-fit result of the Gaussian component tracing [O III] λ5007 Å, the blue dashed line represents the best-fit continuum emission. The solid vertical lines on the top represent the expected position of the [O III] and Hβ lines. In the lower panel, we report in as a solid gray line the residuals of the fit and as a gray-shaded region the errors associated with the data.