Table 4
Single-component models.
| Region | Tkin | log N(CO)/σv | log  |
 |
r21(b) | r31(b) |
|---|---|---|---|---|---|---|
| K | cm−2 (km s−1)−1 | cm−3 | M⊙ (K km s−1 pc2)−1 | |||
| N1 | 31.0 ± 1.3 | 17.71 ± 0.12 | >3.9 | 0.34 ± 0.07 | 1.23 ± 0.03 | 1.24± 0.05 |
| N2 | 22.8 ± 0.9 | 17.63 ± 0.12 | >3.4 | 0.40 ± 0.12 | 1.11 ± 0.03 | 1.05 ± 0.05 |
| N3 | 14.9 ± 1.1 | 17.47 ± 0.08 | >2.9 | 0.40 ± 0.05 | 1.05 ± 0.03 | 0.85 ± 0.05 |
| N4 | 14.9 ± 0.4 | 17.63 ± 0.08 | >3.0 | 0.53 ± 0.08 | 1.00 ± 0.03 | 0.85 ± 0.05 |
| N5 | 14.1 ± 0.8 | 17.96 ± 0.25 | >2.5 | 1.09 ± 0.56 | 1.00 ± 0.03 | 0.75 ± 0.05 |
| S1 | 27.0 ± 5.0 | >17.0 | >2.5 | >0.2 | 1.05 ± 0.12 | 1.05 ± 0.10 |
| S2 | 18.7 ± 0.8 | 17.31 ± 0.09 | >3.3 | 0.26 ± 0.02 | 1.17 ± 0.03 | 1.05 ± 0.05 |
| S3 | 26.2 ± 5.0 | >16.9 | >3.1 | >0.2 | 1.05 ± 0.12 | 0.95 ± 0.10 |
| Mean | ⋯ (a) | 17.62 ± 0.24 | ⋯ | 0.50 ± 0.30 | 1.08 ± 0.09 | 0.97 ± 0.16 |
| Median | ⋯ (a) | 17.63 ± 0.20 | ⋯ | 0.40 ± 0.15 | 1.05 ± 0.07 | 1.00 ± 0.15 |
Notes. Parameters of the best-fit single component model for the selected regions (Sect. 5.1).(a)The mean and median Tkin of the regions is not indicated, because there is a temperature gradient with decreasing T for increasing distances from the nucleus (Fig. 12). (b)Ratio between the rotational transitions CO(2−1)/CO(1−0) (r21) and CO(3−2)/CO(1−0) (r31) in K km s−1 units.
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