X-Shooter NIR spectra of the RXJ 1347-1216 galaxy. Top panel shows the combined, rebinned (∼ 75 km s⁻¹), and smoothed (0.7 nm × 0.12 ″) 2D spectrum. The bottom three panels illustrate the extracted 1D spectra rebinned by ∼ 180 km s⁻¹, ∼ 145 km s⁻¹, and ∼ 120 km s⁻¹, respectively. Expected positions of the [CIII]λ1907 at λ = 1480.7 nm and CIII]λ1909 line at λ = 1482.3 nm, based on the Lyα spectroscopic redshift, are shown as yellow and red lines, respectively. Labels are the same as in Fig. A.1.