Table 4
Temperature derived from 12CO(3–2) and surface density from 13CO(3–2) and C 18O(3–2).
| (1) | (2) | (3) | (4) | (5) | (6) | (7) |
|---|---|---|---|---|---|---|
| r | Tk | 13CO | C18O | Ratio | ||
| (au) | (K) | (K) | (K) | 1015 cm−2 | ||
| 160 | 27.2 | 0.17 | [26,28] | 39 ± 2 | 6.7 ± 0.6 | 5.8 ± 0.8 |
| 200 | 27.4 | 0.11 | [25,28] | 18 ± 1 | 5.5 ± 0.4 | 3.3 ± 0.4 |
| 260 | 19.7 | 0.07 | [19,21] | 9.7 ± 0.3 | 2.1 ± 0.1 | 4.6 ± 0.4 |
| 300 | 18.0 | 0.03 | [17,19] | 6.8 ± 0.1 | 0.39 ± 0.02 | 17 ± 1 |
| 400 | 10.7 | 0.02 | [10,12] | 2.8 ± 0.03 | – | – |
Notes. Nominal model fit after removal of Clean Components for r < 160 au. (1) Knot radius. (2) Temperature derived from 12CO(3–2) and (3) its formal error from the fit and (4) estimated confidence interval from the minimizations. These uncertainty estimates do not take into account an additional 10% error on the absolute flux scale. (5–6) Molecular surface density, (7) 13CO/C18O surface density ratio.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.