N2GN_1_13. Left: False colour image produced using HST data, with F814W, F125W, and F160W images in blue, green, and red, respectively. Overlaid in red are the NOEMA continuum contours at 2 mm, ranging from 4σ to 14σ in steps of 2. The white contours are JWST F444W brightness. The scale bar in the bottom left has a length of 1″. Middle: NOEMA CO(4−3) and CO(5−4) line spectra. The red line shows the Gaussian fit to the line profile (including the continuum). Notice that the CO(5−4) line lies precisely at the interface between two basebands, resulting in the partial fragmentation of the spectral profile. Right: NOEMA 3.5 mm continuum map. Contours are displayed with a step of 12 μJy/beam (corresponding to 2σ).