Overview of the disk-integrated JWST/NIRSpec spectrum of HH 48 NE. Top panel: disk-integrated JWST/NIRSpec spectrum with the main gas lines labeled. The molecular hydrogen O and S series lines are marked in cyan. Bracket, Humphreys, and Pfund recombination series of atomic hydrogen are marked in green, red, and purple, respectively. The CO R (4.3–4.7 µm) and P (4.7–5.2 µm) branches of ro-vibrational transitions are marked in orange. The two literature Spitzer/IRAC data points are shown in dark red for comparison. The wavelength range 4.08–4.19 µm is not covered in the used spectral setup. Middle panel: disk-integrated JWST/NIRSpec spectrum with the gas lines removed in black. The procedure for removing the CO lines is described in detail in Appendix A. The positions of the main vibrational modes of the more abundant ice species are labeled, with the continua used to calculate their optical depths shown as dashed lines with corresponding colors. Bottom panel: optical depth of the ice features in the disk-integrated spectrum shown in the middle panel. The two different colors represent optical depths for two different continuum fits, one for the H₂O and CO₂ features in blue, and one for the weaker ice features neglecting the CO₂ and H₂O features in orange. Both corresponding continua are shown as a dashed line in the middle panel.