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Table 1
Analyzed molecules with transitions, frequencies, energies of the upper level, and Einstein coefficients Aul.
| Molecule | Transition | Frequency | Eu/k | Aul |
| [GHz] | [K] | [10-3 × s-1] | ||
|
|
||||
| DCO+ | 3−2 | 216.1126 | 20.74 | 0.772 |
| DCN | 3−2 | 217.2385 | 20.85 | 0.457 |
| DNC | 3−2 | 228.9105 | 21.97 | 0.557 |
| N2D+ | 3−2 | 231.3218 | 22.20 | 0.712 |
| H13CO+ | 3−2 | 260.2553 | 24.98 | 1.337 |
| HCN | 3−2 | 265.8864 | 25.52 | 0.836 |
| HCO+ | 3−2 | 267.5576 | 25.68 | 1.476 |
| HNC | 3−2 | 271.9811 | 26.11 | 0.934 |
| N2H+ | 3−2 | 279.5117 | 26.82 | 1.259 |
Notes. Values are taken from the CDMS (Müller et al. 2005), accessed via the LAMDA database (Schöier et al. 2005).
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