CO₂ emission with slab models at different T at a constant N, where R_em is used as a scaling factor to match the flux levels. An R_em of 0.823 au is used for the model in red, and 0.069 au and 0.028 au for blue and green, respectively. Panel (a): Fundamental CO₂ band. Panel (b): Fundamental ¹³CO₂ band. Panel(c): Excited bending modes of CO₂ and ¹³CO₂. The 100 K (red) slab matches the JWST-MIRI/MRS data well.