Table 3
Disk mass estimates obtained from a given observation of C18O or C17O without and with isotope selective photodissociation.
| True Md [ M⊙ ] | Inferred NOISO Md [ M⊙ ] | Ratio(MTrue/MNOISO) | |||||||
| Small | Large | Small | Large | Small | Large | ||||
|
|
|||||||||
| T Tauri | T Tauri | T Tauri | |||||||
| C18O | 10-3 | 10-3 | 5.5 × 10-4 | 5 × 10-5 | 1.8 | 20 | |||
| 10-2 | 10-2 | 8 × 10-4 | 1.5 × 10-4 | 12.5 | 67 | ||||
| C17O | 10-3 | 10-3 | 6.4 × 10-4 | 2.1 × 10-4 | 1.6 | 4.8 | |||
| 10-2 | 10-2 | 2 × 10-3 | 5.5 × 10-4 | 5 | 20 | ||||
|
|
|||||||||
| Herbig | Herbig | Herbig | |||||||
| C18O | 10-3 | 10-3 | 6 × 10-4 | 10-4 | 1.7 | 10 | |||
| 10-2 | 10-2 | 6 × 10-3 | 9 × 10-4 | 1.7 | 11 | ||||
| C17O | 10-3 | 10-3 | 6.5 × 10-4 | 1.3 × 10-4 | 1.5 | 7.8 | |||
| 10-2 | 10-2 | 8 × 10-3 | 3× 10-3 | 1.3 | 3.3 | ||||
Notes. The inferred disk masses are obtained with the disk-integrated line intensities given as outputs with the NOISO and ISO networks (see Fig. 10). The ratios between these two estimates are also reported for all the disk models. These correction factors should be applied to mass estimates that are obtained ignoring isotope-selective photodissociation.
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