Table 4.
Outliers in the LTE model.
| Transition | ν [GHz] | A/E | Eup/k [K] | Aij [s−1] | τ(d) [×10−5] | Maser (e) |
|---|---|---|---|---|---|---|
| 80 → 71 | 95.169391 | A+ | 83.54 | 2.13 × 10−6 | −6.5 | I |
| 31 → 40 | 107.013831 (a) | A+ | 28.35 | 3.06 × 10−6 | 1021 | No |
| 00 → 1−1 | 108.893945 | E | 13.21 | 1.47 × 10−6 | 16 590 | No |
| 11 → 10 | 165.050175 | E | 15.47 | 2.35 × 10−5 | 3423 | No |
| 21 → 20 | 165.061130 | E | 20.11 | 2.35 × 10−5 | 3801 | No |
| 31 → 30 | 165.099240 | E | 27.08 | 2.35 × 10−5 | 2579 | No |
| 53 → 52 | 251.811956 | A−+ | 37.96 | 1.65 × 10−4 | −0.1 | No |
| 20 → 1−1 | 254.015377 | E | 12.19 | 1.90 × 10−5 | 9522 | No |
| 9−1 → 80 | 278.304512 (b) | E | 102.07 | 7.67 × 10−5 | −2.5 | I |
| 7−1 → 6−1 | 338.344588 | E | 62.65 | 1.66 × 10−4 | 1301 | No |
| JK → (J − 1)K(c) | 97–290 | A, E | – | – | > 0.0 | No |
Notes. List of lines with intensities that exceed our LTE model. Their line intensities cannot be reproduced without a non-LTE model and there are no other lines subject to produce an important contribution if blended.
Blended with the methanol 345 → 353 − A− transition at 107.015820 GHz (Eup/k = 1515.904 K, Aij = 1.00 × 10−9 s−1).
Blended with the methanol 2−2 → 3−1 − E transition at 278.342261 GHz (Eup/k = 24.96 K, Aij = 1.65 × 10−5 s−1).
Optical depth according to our non-LTE model in region 8 (see Appendix C).
Maser candidates based on the discussion in Sect. 4.2.2. If it is a candidate, then we add the classification Class I or II, according to Menten (1991).
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