Table 1.
Groups of indicators used in the present analysis.
| Species | System | |Δν| | Bands | Nline | λvac./nm | Param. |
|---|---|---|---|---|---|---|
| C2 | Swan | 0 | (0−0), (1−1) | 32 | 494−516 | log ϵC |
| C2 | Swan | 1 | (0−1), (1−0), (1−2) | 7 | 473 − 562 | |
| CH | A−X | 0 | (0−0), (1−1) | 6 | 425 − 436 | |
| CH | X−X | 1 | (1−0), (2−1), (3−2) | 48 | 3295 − 3795 | |
| 12C16O | X−X | 1 | (1−0), (2−1), (3−2), (4−3), (5−4) | 28 | 4297 − 6329 | |
| 12C16O | X−X | 2 | (2−0), (3−1) | 52 | 2295 − 2591 | |
| NH | X−X | 0 | (0−0), (1−1) | 13 | 11311 − 15023 | log ϵN |
| NH | X−X | 1 | (1−0), (2−1), (3−2), (4−3) | 18 | 2891 − 3445 | |
| CN | A−X | 0 | (0−0) | 59 | 1088 − 1321 | |
| OH | X−X | 0 | (0−0), (1−1), (2−2) | 84 | 9389 − 12280 | log ϵO |
| OH | X−X | 1 | (1−0), (2−1) | 46 | 2970 − 3813 | |
| OH | X−X | 2 | (2−0), (3−1), (4−2) | 15 | 1528 − 1762 | |
Notes. Final column specifies the free parameter that is adjusted so as to match the theoretical equivalent widths to the observed ones, in the analysis that follows. C2 Swan, CH A−X and CN A−X are electronic transitions. NH X−X |Δν| = 0 and OH X−X |Δν| = 0 are rotational (or pure-rotation) transitions. The CH X−X, 12C16O X−X, NH X−X |Δν| = 1, OH X−X |Δν| ≥ 1 are rovibrational (or vibration–rotation) transitions.
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