Table 8.
Results derived from LTE (MADCUBA) and NLTE (RADEX) analyses using Herschel/HIFI and APEX data.
| Molecule | log Nmol | Tex | n(H2) | log Nmol | Notes |
|---|---|---|---|---|---|
| RADEX |
|||||
| (cm−2) | (K) | (cm−3) | (cm−2) | ||
| (1) | (2) | (3) | (4) | (5) | (6) |
| 12CO | 16.6–16.8 | 84–92 | 5.9 × 104 | 16.75 | a, b |
| 17.4–17.8 | 16–18 | 7.3 × 103 | 17.41 | ||
| 13CO | 16.39–16.59 | 22–25 | 3.8 × 103 | 16.35 | c |
| HCN | 13.28–13.58 | 17–21 | 1.2 × 106 | 13.39 | d |
| HNC | 13.03–13.05 | 17–18 | 1.4 × 106 | 13.00 | d |
| HCO+ | 13.29–13.53 | 15 | 5.0 × 105 | 13.76 | d |
| CS | 13.11–13.39 | 26–39 | 8.0 × 105 | 13.15 | d |
| [CI] | 17.57–17.77 | 103–174 | 1.0 × 105 | 17.56 | e, f |
| CH | 14.32–14.50 | 10–13 | — | — | e, g |
Notes. Column (1): molecule; Col. (2): molecular column density (logarithmic value) in units of cm−2; Col. (3): excitation temperature in kelvin; Col. (4): hydrogen volume density obtained using RADEX in units of cm−3; Col. (5): molecular column density derived with RADEX in units of cm−2; Col. (6): notes with the following code: (a) two (i.e., cold and warm) components fit; (b) all transition detected; (c) J = 9–8 not detected; (d) HIFI transitions not detected; (e) only HIFI data; (f) extended source (>20″); (g) n(H2) and Nmol cannot be derived since this molecule is not present in the RADEX online code. The kinetic temperature and the source size considered in the RADEX analysis are, respectively, Tkin = 200 K and θs= 20″.
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