Pos 1 and 2 Hα flux (top panels), FWHM (middle panels) maps in units of km s-1 (corrected for instrumental broadening), and radial velocity maps (bottom panels) in units of km s-1, relative to vsys = − 390 km s-1 (Schwartz & Martin 2004) for the three identified line components. Contours show the summed Hα intensity (the peak at coordinates (3, 3) is the supernebula). Example Hα line profiles and their best multi-component fits are shown for select spaxels as discussed in the text. The parallel dashed lines show the position and width of the pseudoslit we defined to extract the velocity information for plotting in Fig. 8. The dot-dashed line in the C2 radial velocity map (bottom-centre) shows the zero velocity (i.e. vsys) contour.
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