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Table 1
Line parameters of observed transitions.
| Transition | Frequency (GHz) | ηmb | θmb(′′) | Peak line flux (K km s−1) | rms (K km s−1) | Telescope | ||
|---|---|---|---|---|---|---|---|---|
| 12CO | ||||||||
| J = 1 → 0 | 115.271 | 0.73 | 22.5 | 610.2 | 1.1 | IRAM 30 m/EMIR | ||
| J = 2 → 1 | 230.538 | 0.65 | 28.7 | 355.5 | 0.4 | APEX/PI230 | ||
| J = 3 → 2 | 345.796 | 0.73 | 19.2 | 210.2 | 0.8 | APEX/FLASH+ | ||
| J = 6 → 5 | 691.473 | 0.43 | 9.6 | 580.1 | 4.0 | APEX/CHAMP+ | ||
| J = 7 → 6 | 806.652 | 0.34 | 8.2 | 673.4 | 19.0 | APEX/CHAMP+ | ||
| J = 11 → 10 | 1267.014 | 0.68 | 22.9 | 130.9 | 3.5 | SOFIA/GREAT | ||
| J = 13 → 12 | 1496.923 | 0.68 | 19.1 | 155.3 | 2.4 | SOFIA/GREAT | ||
| J = 16 → 15 | 1841.346 | 0.70 | 14.8 | 46.2 | 1.8 | SOFIA/GREAT | ||
| 13CO | ||||||||
| J = 1 → 0 | 110.201 | 0.73 | 23.5 | 64.9 | 0.4 | IRAM 30 m/EMIR | ||
| J = 2 → 1 | 220.399 | 0.65 | 30.1 | 92.6 | 0.6 | APEX/PI230 | ||
| J = 4 → 3 | 440.765 | 0.59 | 15.0 | 198.1 | 2.5 | APEX/FLASH+ | ||
| J = 6 → 5 | 661.067 | 0.45 | 10.0 | 158.8 | 3.2 | APEX/CHAMP+ | ||
| C18O | ||||||||
| J = 2 → 1 | 219.561 | 0.65 | 30.2 | 12.7 | 0.6 | APEX/PI230 | ||
| 12C | ||||||||
| 3P1 →3P0 | 492.160 | 0.59 | 13.5 | 34.0 | 1.8 | APEX/FLASH+ | ||
| 12C+ | ||||||||
| 2P3∕2 →2P1∕2 | 1900.53 | 0.70 | 14.8 | 728.5 | 2.1 | SOFIA/GREAT | ||
| Hα | ||||||||
| H40 – 43α | 80–90 | 0.73 | ≈26 | 11.2 | 0.2 | IRAM 30 m/EMIR | ||
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