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Table 3
Common parameters used for the grid of PDR models.
| Quantity | value | unit | note |
|---|---|---|---|
| ζ | 10−16 | s−1 | (1) |
| NH / E(B–V) | 5.8 × 1021 | cm−2 mag−1 | (2) |
| mgrain / mgas | 0.01 | no unit | (3) |
| α | −3.5 | no unit | (4) |
| amin | 1 × 10−7 | cm | (5) |
| amax | 3 × 10−5 | cm | (6) |
| mPAH / mgrain | 4.6 × 10−2 | no unit | (7) |
Notes. (1) Cosmic-ray ionization rate of H2 per second. (2) Gas-to-grain ratio (Bohlin et al. 1978). (3) Grain to gas mass ratio. (4) MRN power law exponent. (5) Minimum radius of grains. (6) Maximum radius of grains. (7) PAH to grain mass ratio.
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