Table 3
Best-fit parameters of the model for CH emission/absorption towards W3 IRS5.
| Layer | υ | Δ υ | N(CH) | Tex |
|---|---|---|---|---|
| [km s−1] | [1014 cm−2] | [K] | ||
| Core emission (HC) | − 37.5 | 2.6 | 80.6 | 93.4 |
| − 34.9 | 4.3 | 62.6 | 133.9 | |
| Common envelope (CE) | − 39.7 | 5.4 | 2.4 | 25.7 |
| − 39.5 | 1.6 | 0.9 | 23.5 | |
| − 38.1 | 9.6 | 4.8 | 64.1 | |
| Foreground screen (FG) | − 40.6 | 6.5 | 1.2 | 3.1 |
| − 39.5 | 2.0 | 0.8 | 3.1 | |
| − 21.0 | 1.3 | 0.2 | 3.1 | |
| + 0.5 | 2.7 | 0.1 | 3.1 | |
Notes. Cols. 2 and 3: center velocity and FWHM of Gauss-profile velocity components, respectively. Col. 4: d N∕d υ integrated across velocity profile of component. Components: HC – Emission components, radiatively pumped by hot core dust (beam-filling factor 0.003). CE – Three-component, moderately excited common envelope around emission components (beam-filling factor 0.15). FG – Cold foreground screen, seen in absorption in either line.
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