Fig. 4

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Spectra (across 13.4–24.0 μm) of DR Tau (grey) and CI Tau (black, scaled; see Sect. 3.2.2) shown together with the residual spectrum (in red) of DR Tau after subtraction of the scaled spectrum of CI Tau. The best fitting H2O slab model (T = 375 K) to the residuals is shown in blue. The black dashed box just shortward of ~24.0 μm indicates the pair of lines identified by Banzatti et al. (2023a), hinting at a third component (~170 K) needed to fully explain the observed H2O reservoir.
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