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Fig. 2

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[Fe II] emission lines used in this study and detected with NIRSpec and MIRI, arranged in order of increasing upper energy (EU/k). Top panels: moment-0 maps (in units of erg s−1 cm2 sr−1), constructed by integrating the emission across the frequency range indicated by the shaded regions in the corresponding spectra below. Although integration is performed in frequency space, the x-axis is displayed in velocity (km s−1) for clarity. A 3-sigma threshold is applied. The maps are overlaid with circular, color-coded apertures (0.7″) used consistently throughout this study. Bottom panels: spectra (in units of erg s−1 cm−2 sr−1 Hz−1) extracted from each aperture, with shaded regions highlighting the velocity range used for integration, primarily focusing on blue-shifted emission. Each subplot includes the rest wavelength (λ0), transition and upper energies (∆E, EU), and Einstein-A value for reference.

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