Open Access
Table 1.
Spectroscopic data for relevant transitions from Splatalogue (https://splatalogue.online/).
| Transitions | Frequency | Eu | gu | log(Aul) |
|---|---|---|---|---|
| (GHz) | (K) | (s−1) | ||
| c-C3H2 523–432 | 249.0544 | 41.0 | 33 | −3.38 |
| c-C3H2 706–616 | 251.3144 | 50.6 | 45 | −3.03 |
| c-C3H2 706–616 | 251.3144 | 50.6 | 15 | −3.03 |
| c-C3H2 615–524 | 251.5087 | 47.5 | 13 | −3.17 |
| c-C3H2 625–514 | 251.5273 | 47.5 | 39 | −3.17 |
| CH2NH 716–707 | 250.1618 | 97.2 | 15 | −3.82 |
| CH2NH 606–515 | 251.4213 | 64.1 | 13 | −4.04 |
| CH2NH 413–312 | 266.2700 | 39.8 | 9 | −3.78 |
| HCN 3–2 | 265.8864 | 25.5 | 21 | −3.08 |
| HCN v2 = 1, 3–2 | 267.1993 | 1050 | 21 | −3.13 |
| HC3N v7 = 2 J = 29–28 | 265.4038 | 832.7 | 59 | −2.83 |
| HCO+ 3–2 | 267.5576 | 25.7 | 7 | −2.38 |
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