S CrA full L- and M-band spectra

We detect emission from ^12^CO (v=1-0, v=2-1, and v=3-2), ^13^CO (v=1-0), hydrogen recombination lines, OH, and H_2_O in the S CrA N disk. In the fainter S CrA S system, only the ^12^CO v=1-0 and the hydrogen recombination lines are detected. The ^12^CO v=1-0 emission in S CrA N and S shows two velocity components, a broad component coming from ~0.1au in S CrA N and ~0.03au in S CrA S and a narrow component coming from ~3au in S CrA N and ~5au in S CrA S. We fit local thermodynamic equilibrium slab models to the rotation diagrams of the two S CrA N velocity components and find that they have similar column densities (~8x10^16^-4x10^17^cm^-2^), but that the broad component is coming from a hotter and narrower region.

Two filter settings, M4211 and M4368, provide sufficient wavelength coverage for characterizing CO and H_2_O at ~5um, in particular covering low- and high-J lines. CRIRES+ provides spectral coverage and resolution that are crucial complements to low-resolution observations, such as those with JWST, where multiple velocity components cannot be distinguished.