Table 2
Emission line of each species chosen for analysis, including upper level energies Eup and the Einstein A coefficient.
| Species | λ (μm) | Transition | Eup (K) | A (s−1) | Reference |
|---|---|---|---|---|---|
| CO2 | 14.98299 | v1v2l2v3r = 01101 → 00001, Q6e | 983.85 | 1.527 | Bosman et al. (2017) |
| C2H2 | 13.20393 | v1v2v3v4v5l± = 000011 → 000000, R11e | 1313.1 | 3.509 | Woitke et al. (2018) |
| HCN | 14.03930 | v1v2l2v3 = 0110 → 0000, Q6e | 1114.1 | 2.028 | Bruderer et al. (2015) |
| o-H2O | 17.75408 | J′ = 6 → J″ = 5 | 1278.5 | 0.002869 | Notsu et al. (2017) |
| NH3 | 10.33756 | v1v2v3v4 = 0100 → 0000, J′ = 3 → J″ = 3 | 1515.3 | 11.57 | |
| OH | 20.11506 | J′ = 13.5 → J″ = 12.5 | 5527.2 | 50.47 | Woitke et al. (2018) |
Notes. The description of the ro-vibrational lines of CO2, C2H2, HCN, and NH3 is an abbreviated form of that described in Jacquemart et al. (2003); Rothman et al. (2005), where vj are the normal mode vibrational quantum numbers, lj are the vibrational angular momentum quantum numbers, and l is the absolute value of the sum of lj. The final entry, for example R11e, represents an R-branch transition, the lower state rotational energy level is 11, and e or f denotes the symmetry for l-type doubling.
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