Morphologies and spectra of the individual galaxies and extended emission. [From left to right,] (a) the first panel shows the non-JvM-corrected [C II] moment-0 map of CRISTAL-05, similar to the central panel of Figure 5, with C05-NW and C05-SE maps overlaid as solid green and dashed navy lines, respectively (3, 9, and 15 σ_rms). (b) Second panel: JvM-corrected spectra of CRISTAL-05 (black line), C05-NW (green line), and C05-SE (navy line), for apertures that enclose all the emissions of each component. The Gaussian distribution represents the best fit for the spectra of C05-NW and C05-SE, with a FWHM of 141 ± 7 and 64 ± 6  km s⁻¹ , respectively. (c) Third panel: JvM-corrected spectra of CRISTAL-05 (black line) and the subtraction of components C05-NW and C05-SE (yellow line). The Gaussian distribution represents the best fit for the spectra of the residual, with a FWHM of 420 ± 40. (d) Non-JvM-corrected [C II] moment-0 map of CRISTAL-05, with the residual emission of the cube after subtracting components C05-NW and C05-SE (as 3-, 9-, 15-σ_rms)