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Table 1
Abundances (relative to H2) estimated with the spherical radiative transfer model (RATRAN) for the envelope of AFGL 2591, based on HIFI and JCMT data.
| Molecule | Inner abundance | Outer abundance | Jump at |
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| CO | 2 × 10-4 | const | |
| CN | 1 × 10-9 | const | |
| CS | 4 × 10-8 | const | |
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| HCO+ | 3 × 10-11 | 3 × 10-8 | 100 K |
| H2CO | 1 × 10-11 | 1 × 10-8 | 100 K |
| N2H+ | 8 × 10-13 | 8 × 10-10 | 100 K |
| CCH | 8 × 10-12 | 8 × 10-8 | 100 K |
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| NO* | 5 × 10-8 | const | |
| OCS* | 4 × 10-8 | const | |
| OH* | 2 × 10-8 | const | |
| H2CS* | 4 × 10-9 | const | |
| C* | 4 × 10-6 | const | |
| C+* | 7 × 10-6 | const | |
| CH* | 1 × 10-8 | const | |
| O** | 2 × 10-5 | const | |
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| HCN | 5 × 10-6 | 5 × 10-7 | 230 K |
| HNC | 1 × 10-7 | 1 × 10-8 | 230 K |
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| NH3 | 4 × 10-6 | 4 × 10-10 | 100 K |
| SO | 5 × 10-7 | 5 × 10-9 | 100 K |
| SO2 | 5 × 10-6 | 5 × 10-9 | 100 K |
| H2S | 8 × 10-8 | 8 × 10-10 | 100 K |
| H2O | 1 × 10-4 | 1 × 10-9 | 100 K |
| HCl | 4 × 10-6 | 4 × 10-10 | 100 K |
| CH3OH | 8 × 10-7 | 8 × 10-8 | 100 K |
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