Table 5
Origin of the molecules according to each model.
| Molecule | Model a | Model b | Model c | Model d | ||||
|
|
||||||||
| CO | P& D | D | P& D | D | ||||
| C2H | P& D | P& D | P& D | P& D | ||||
| CN | P& D | P& D | P& D | P& D | ||||
| HCN | P& D | D | P& D | D | ||||
| CS | P& D | D | P& D | D | ||||
| HCO+ | – | – | P& D | D | ||||
| HNC | P& D | D | P& D | D | ||||
| HCO | P& D | – | P& D | – | ||||
| N2H+ | – | – | P& D | D | ||||
| SiO | D | D | P& D | D | ||||
| CH3CN | D | D | P& D | D | ||||
| NS | – | – | P& D | D | ||||
| H2CO | D | D | P& D | D | ||||
| HC3N | D | – | – | – | ||||
| CH3OH | D | – | – | – | ||||
| SO | D | D | D | D | ||||
| CH3CCH | D | D | D | D | ||||
| SO2 | D | D | D | D | ||||
| H2CS | D | D | – | – | ||||
| HOC+ | – | – | – | – | ||||
Notes. P stands for PDR emission, D for dense gas emission (evaluated at visual extinctions of 2 mag and 10 mag respectively). indicates that the molecule may arise from both molecular cloud regions. “–” means that the model give a column density below 1012 cm-2 (theoretical detectable limit), and thus the result is not taken into account.
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