Similar to Fig. 1, emission line maps and spectra of 4C+03.24 showing the [O III] companion search. The dashed contours in panel (a) show the optical continuum from NIRSpec IFU. We note that we mask the continuum from the foreground galaxy (blue dot, Appendix D.2). There are two [O III] Gaussian components that may be [O III] companions (panel c lower). We highlight them in dark green and black for the broad and narrow components, respectively. The fitted velocity maps of these two components of 4C03-[O III] are shown in panel (d) and panel (e) for the narrow and broad components, respectively. Example spectra at two spaxels are shown in panel (f) with the broad component highlighted in red and blue.