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Table 6.
Assumptions to estimate the fraction of [C II] emission from the cold neutral medium (CNM).
| N(H I,PDR) | 3.25 × 1020 cm−2 |
|---|---|
| X(C+) | 5.9 × 10−5 |
| nCNM | 100 cm−3 |
| TCNM | 80 K |
Notes. N(H I,PDR) is the estimated column density of atomic hydrogen at the surfaces of the PDRs. X(C+) is the fractional abundance of C+, nCNM and TCNM are density and temperature of the CNM.
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