Fig. 2.

Upper left: continuum emission from MUSE data cube, having collapsed the data cube in the range 8025 − 8125 Å (rest frame). A few bright Arp220 clumps (c1 and c2) and background galaxies are labelled (see Appendix A and Table 1); these knots are used to perform a bona fide astrometric registration of the MUSE data (see Sect. 3.2). Upper right: HST/WFC3 F160W image from HST archive (total exposure time of 172 s and pixel scale of 0.13″; PI: Larson). The image shows the region analysed in this work; the white box indicates the portion displayed in the bottom-right panel. Bottom left: zoomed-in insets of 7″ × 7″ showing the continuum emission map around some of the sources selected in the upper-left panel. The overlaid cyan contours represent the NIR emission from the HST image. For the sources in the DECaLS DR7 catalogue (Dey et al. 2018), we mark the DECaLS positions with black crosses. Bottom right: [S III]λ9069 image obtained integrating the flux in the wavelength range 9065 − 9083 Å, after subtracting the continuum emission, with overlaid contours of the NIR emission (upper-right panel). Crosses mark the [S III] nuclear peaks; white circles mark the position of two SCs identified in this work (see Sect. 6). North is up.
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