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Table 3
Properties of the investigated transitions.
| Species | Freq | Eup/k | Aij | Jup(Ka,Kc) − Jlow(Ka,Kc) |
|---|---|---|---|---|
| [MHz] | [K] | [s−1] | ||
| Line pair 1 | ||||
| CH3OCHO, vt = 0 | 216 109.780 | 109.3 | 1.49 × 10−4 | 19(2, 18) − 18(2, 17) E |
| DCO+, ν = 0 | 216 112.582 | 20.7 | 7.66 × 10−4 | 3–2 |
| CH3OCHO, vt = 0 | 216 115.572 | 109.3 | 1.49 × 10−4 | 19(2, 18) − 18(2, 17) A |
| Line pair 2 | ||||
| CH3OCHO, vt = 0 | 216210.906 | 109.3 | 1.49 × 10−4 | 19(1, 18) − 18(1, 17) E |
| CH3OCHO, vt = 0 | 216216.539 | 109.3 | 1.49 × 10−4 | 19(1, 18) − 18(1, 17) A |
Notes. The spectroscopic predictions (frequencies, upper energy levels and Einstein coefficients) are taken from the JPL catalog (Pearson et al. 2010).
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