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Table 3
Results of rotational diagram analyses for isotopologs of CO in two upper level energy ranges, Eu < 200 K and Eu > 200 K.
| Species | Size | Eu < 200 K | Eu > 200 K | Notes | ||
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| Trot [K] | N [cm-2] | Trot [K] | N [cm-2] | |||
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| CO | beam-filling | 208 | 6.0 × 1016 | 226 | 6.6 × 1016 | Only wings, | v − vlsr | ≥ 2.5 km s-1. |
| CO | beam-filling | 67 | 5.1 × 1017 | 149 | 2.4 × 1017 | Only wings, optical depth corrected. |
| 13CO | beam-filling | 68 | 1.3 × 1016 | 152 | 4.8 × 1015 | |
| C18O | beam-filling | 52 | 2.2 × 1015 | – | – | |
| C17O | beam-filling | 36 | 1.0 × 1015 | – | – | Two lines (7 − 6 is excluded). |
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| CO | 15” | 89 | 3.4 × 1017 | 177 | 2.1 × 1017 | Only wings, | v − vlsr | ≥ 2.5 km s-1. |
| CO | 15” | 45 | 5.0 × 1018 | 124 | 8.7 × 1017 | Only wings, optical depth corrected. |
| 13CO | 15” | 46 | 1.3 × 1017 | 126 | 1.8 × 1016 | |
| C18O | 15” | 38 | 2.3 × 1016 | – | – | |
| C17O | 15” | 27 | 1.4 × 1016 | – | – | Two lines (7 − 6 is excluded). |
Notes. Uncertainties for the parameters were calculated including the effects of rms noise and the relative flux calibration errors (10%), and were found to always be <10%.
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