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Table B.1
Initial abundances of the principal species used in the models are shown in Col. 2 for a chemical network of 183 species and in Col. 3for 334 species.
| Species | nX /nH | nX/nH |
|---|---|---|
| 183 species | 334 species | |
| H2 | 4.99(−1) | 4.99(−1) |
| He | 9.00(−2) | 9.00(−2) |
| s-H2 | 1.24(−4) | 1.24(−4) |
| s-H2O | 9.87(−5) | 1.00(−4) |
| s-CO | 9.19(−5) | 9.22(−6) |
| s-OH | 1.91(−5) | 1.90(−5) |
| s-HNO | 2.89(−5) | 2.68(−5) |
| s-N2 | 1.33(−5) | 1.38(−5) |
| s-O | 1.16(−5) | 1.15(−5) |
| s-HCN | 6.23(−6) | 4.62(−6) |
| s-CH4 | 6.20(−6) | 6.05(−6) |
| s-NH3 | 8.03(−6) | 7.29(−6) |
| s-H2CO | 3.20(−7) | 3.09(−7) |
| s-CH3OH | 1.29(−7) | 1.38(−7) |
| s-CO2 | 9.83(−8) | 9.94(−8) |
| s-H2S | 3.09(−8) | 2.78(−8) |
| s-Si | 8.00(−9) | 7.82(−9) |
| s-Fe | 3.00(−9) | 3.00(−9) |
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