Table 4
ρout values needed to have NH,meas = NH,pred with the assumption of maser disk-torus density profile continuity, and output of the model, the torus outer radius.
| Name | ρout [cm-3] |  [pc] |
|
|
||
| NGC 1194 | 2.8 × 106 | 2.4 ± 0.2 |
| NGC 1386 | 1.3 × 107 | 2.1 ± 0.3 |
| NGC 2273 | 4.8 × 107 | 0.77 |
| NGC 2960 | 6.5 × 106 | 0.53 |
| NGC 3079 | 4.1 × 106 | 2.7 ± 0.2 |
| NGC 3393 | 2.6 × 106 | 3.3 ± 0.5 |
| NGC 4388 | 2.4 × 107 | 0.34 ± 0.07 |
| IC 2560 | 3.1 × 107 | 1.1 |
| NGC 1068 | 1.6 × 107 | 2.2 |
| NGC 4945 | 1.6 × 107 | 1.1 ± 0.1 |
| Circinus | 3.4 × 107 | 1.3 ± 0.3 |
| NGC 4258 | 1.9 × 106 | 0.36 ± 0.03 |
| NGC 6264 | 2.8 × 106 | 1.6 |
| UGC 3789 | 6.6 × 106 | 0.69 |
Notes. Six of our sources have a lower limit on the column density and therefore on the torus outer radius, too. In these cases, the derived torus outer radius may be less constrained owing to the high obscuring column, compatible with the maser disk one.
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