Modeling of the double-horn emission lines for the KiDS 1433. (a) H₂ gas density profile. (b) Rotational velocity curve. (c,d) Observed CO(1→0) and CO(3→2) spectra and modeling. Red dots and error bars are the observed fluxes and their uncertainties, respectively. Dashed and solid black lines correspond to the disk and ring models, respectively. See the legend and text for further details.