Free Access
Table 4
Molecular excitations in W3 IRS5.
| Zone A:SMM1/SMM2 | Zone B:SMM3/SMM4 | |||||||
|
|
|
|||||||
| Molecule | T (K) | Ntot (cm-2) | Xa | T (K) | Ntot (cm-2) | Xb | Note | |
|
|
||||||||
| Rotation diagram: T = Trot | ||||||||
|
|
||||||||
| SO2 | 233 | 6.6 × 1016 | 4.4 × 10-7 | zone A: 2 trans. | ||||
| 34SO2 | 89 ± 10 |
|
|
133 | 1.8 × 1015 | 2.0 × 10-8 | zone A: lowest 4 trans, zone B: 2 trans. | |
| 197 ± 55 |
|
|
zone A: highest 3 trans. | |||||
|
|
||||||||
| RADEX LVG model: T = Tkin | ||||||||
|
|
||||||||
| 34SO2 | 85 | 7.3 × 1015 | 4.9 × 10-8 | zone A: f = 0.9, nH2 ≥ 109 cm-3 | ||||
| CH3CNc | 160 | 1.7 × 1014 | zone B: f = 0.8, nH2 = 8.4 × 104 cm-3 | |||||
|
|
||||||||
| Column densities at T = Trot = 150 K | ||||||||
|
|
||||||||
| SO | 150 | >1.3 × 1016 | >8.7 × 10-8 | 150 | >6.6 × 1015 | >7.4 × 10-8 | opacities (~0.3–0.5) in both zones | |
| 33SO | 150 | 9.7 × 1015 | 6.5 × 10-8 | 150 | 3.6 × 1015 | 4.1 × 10-8 | ||
| SO2 | 150 | 1.4 × 1017 | 9.4 × 10-7 | 150 | 2.5 × 1016 | 2.8 × 10-7 | ||
| 33SO2 | 150 | 9.5 × 1014 | 6.4 × 10-9 | 150 | <9.5 × 1013 | <1.1 × 10-9 | ||
| 34SO2 | 150 | 6.1 × 1015 | 4.1 × 10-8 | 150 | 1.9 × 1015 | 2.1 × 10-8 | ||
| HC15N | 150 | 1.7 × 1013 | 1.1 × 10-10 | 150 | 8.1 × 1012 | 9.1 × 10-11 | ||
| HNCO | 150 | 1.1 × 1014 | 7.4 × 10-10 | 150 | <3.0 × 1013 | <3.4 × 10-10 | ||
| CH3OH | 150 | 4.9 × 1014 | 3.3 × 10-9 | 150 | 4.5 × 1015 | 5.1 × 10-8 | ||
Notes.
(c)
Data taken from Wang et al. (2012).
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.