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Table 1
Input parameters used in the Meudon PDR code common to all models discussed in Sect. 2.2.
| Parameter | Value | Unit/Ref. |
|
|
||
| Geometry | plane-parallel | |
| Size |
|
|
| Equation of state | isochoric | |
| Density | 50, 100, 1000 | cm-3 |
| ISRF scaling factor, G0 | 1 (2 sides) | (1) |
| Cosmic-ray ionization rate, ζ | variable | s-1 |
| Metallicity, Z | 1 | |
| Dust extinction curve | mean Galactic | (2) |
| Mass grain/mass gas | 0.01 × Z | |
| Mass PAH/mass grain | 4.6 × 10-2 | (3) |
| NH/E(B − V) | 5.8 × 1021/Z | cm-2 mag-1 |
| RV | 3.1 | (4) |
| Grain size distribution | ∝ r -3.5 | (5) |
| Minimum grain radius | 1 × 10-7 | cm |
| Maximum grain radius | 3 × 10-5 | cm |
Reference. (1) Mathis et al. (1983); (2) Fitzpatrick & Massa (1986); (3) Draine & Li (2007); (4) Seaton (1979); (5) Mathis et al. (1977).
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