Observations of the COSMOS-Web ring from HST, JWST, and NOEMA. Left: Color image composed of F444W (red), F277W (green), and a median stack of F150W + F814W (blue). Contours show the NOEMA CO maps at the 3, 5, and 8σ levels. Red and white contours correspond to CO(4–3) and CO(5–4), respectively. Ellipses in the bottom-left corner indicate the corresponding beams. Right: 1D spectra for CO(4–3) and CO(5–4) in 10 MHz/channel resolution. The flux uncertainty is shown for each channel in gray. The lines are fitted with a Gaussian profile in red; the corresponding line intensity, velocity dispersion, and redshift are presented in text.