Table 7
Cloudy model predictions for NW.
| Input parameters | Output parameters | |||||||||||||
| Model | Description | Conf.a | LX | CRb | D/G | nmax c | Tstop d | M(H0) | Mdust | [C ii] | [O i] | [Si ii] | Γtot(HI) f | |
| (log erg s-1) | (× Gal.) | (× Gal.) | (cm-3) | (K) | (log M⊙) | (log M⊙) | (M/Oe) | (M/Oe) | (M/Oe) | PE | CR | |||
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| Exploratory models | ||||||||||||||
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| ℳ0a | (≈P08’s M2) | (a) | 0 | 0 | 0 | 150 | 50 g | 3.7 | 0 | 0.01 | 0.01 | 0.27 | 0% | 0% |
| ...... b | Dust (Z-scaled D/G) | (a) | 0 | 0 | 1/50 | 50 | 50 g | 4.7 | 2.6 | 0.02 | 0.06 | 0.35 | 12% | 0% |
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| ℳ1 | XR | (a) | 40.6 | 0 | 0 | 150 | 100 | 7.2 | 0 | 1.01 | 1.10 | 0.81 | 0% | 0% |
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| ℳ2a | XR + dust (observed D/G) | (a) | 40.6 | 0 | 1/1000 | 200 | 95 | 7.2 | 2.2 | 1.00 | 1.07 | 0.77 | 4% | 0% |
| ...... b | XR + dust (Z-scaled D/G) | (a) | 40.3 | 0 | 1/50 | 250 | 110 | 7.2 | 3.4 | 1.01 | 1.05 | 0.62 | 57% | 0% |
| ...... c | XR + dust (maximum D/G) | (a) | 40.6 | 0 | 1/300 | 200 | 100 | 7.2 | 2.6 | 1.00 | 1.08 | 0.77 | 10% | 0% |
| ...... d | XR + dust (radial D/G) | (a) | 40.6 | 0 | 1/(150 ↘ 750) | 200 | 105 | 7.2 | 3.0 | 1.02 | 1.13 | 0.80 | 12% | 0% |
| ...... e | XR + dust (extra sector) | (b) | 40.6 | 0 | 1/(1000,50) | 150 | 90 | 7.4 | 2.3 | 1.02 | 1.02 | 0.75 | 4% | 0% |
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| ℳ3a | XR + CR | (a) | 40.6 | 1 | 0 | 200 | 110 | 7.2 | 0 | 1.01 | 1.13 | 0.81 | 0% | 13% |
| ...... b | XR + CR | (a) | 40.1 | 5 | 0 | 250 | 125 | 7.2 | 0 | 1.06 | 1.00 | 0.65 | 0% | 65% |
| ...... c | CR only | (a) | 0 | 1 | 0 | 25 | 230 | 8.1 | 0 | 1.04 | 1.23 | 0.80 | 0% | 96% |
| ...... d | CR only | (a) | 0 | 5 | 0 | 250 | 150 | 7.3 | 0 | 1.02 | 1.01 | 0.66 | 0% | 96% |
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| Full models | ||||||||||||||
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| ℳ4a | Best parameter set | (b) | 40.6 | 0.1 | 1/(1000,50) | 250 | 100 | 7.4 | 2.3 | 1.05 | 1.05 | 0.77 | 3% | 0.7% |
| ...... b | ℳ4a + molecules | (b) | 40.6 | 0.1 | 1/(1000,50) | 250 | 80 | 7.3 | 2.2 | 1.03 | 1.00 | 0.71 | 3% | 1% |
| ...... c | ℳ4b + clumps | (c) | 40.5 | 0.1 | 1/1000 | 150 | 90 | 7.3 | 2.6 | 1.00 | 1.12 | 0.84 | 3% | 2% |
| (23%) | (17%) | |||||||||||||
Notes. The model ℳ0a is equivalent to the model M2 in P08 accounting for a few modifications in the latter (Sect. 4.2). The model ℳ1 is similar to model M2X2 in P08 but with a new X-ray description (Sect. 5.3). Some input parameters are fixed (CR rate, D/G) while others are scanned in order to fit the observations (LX, nmax, Tstop). The observed dust and H0 mass is close to 102.7 M⊙ (Sect. 5.4) and 107.2 M⊙ (Sect. 5.5) respectively. The underlined values indicate that the model prediction deviates significantly from the observation.
The sector configuration refers to the topology illustrated in Fig. 6.
Fraction of the total heating in the H i region due to the photoelectric effect (“PE”) and to cosmic rays (“CR”). The remaining fraction is mostly due to ionization of H and He. For model ℳ4c we give the fractions for the main radiation-bounded sector and for the clump sector (between parentheses).
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