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Table 3
Species column densities (cm-2), in the gas phase at 300 au, integrated in the vertical direction and computed with the three models.
| Species | Model 1 | Model 2 | Model 3 |
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| Si | 2 × 1012 | 2 × 1012 | 7 × 1011 |
| Na | 4 × 1012 | 4 × 1012 | 1 × 1011 |
| OH | 2 × 1014 | 1 × 1013 | 7 × 1013 |
| CO | 9 × 1016 | 7 × 1016 | 1 × 1016 |
| CS | 3 × 1013 | 5 × 1013 | 1 × 1012 |
| HS | 5 × 1012 | 4 × 1012 | 3 × 1011 |
| N2 | 1 × 1016 | 8 × 1015 | 1 × 1015 |
| NH | 5 × 1013 | 5 × 1012 | 2 × 1012 |
| CH | 9 × 1013 | 7 × 1013 | 2 × 1013 |
| O2 | 4 × 1012 | 1 × 1011 | 9 × 1013 |
| C2 | 1 × 1015 | 4 × 1015 | 3 × 1013 |
| CN | 1 × 1015 | 1 × 1015 | 3 × 1013 |
| NO | 2 × 1013 | 5 × 1012 | 2 × 1013 |
| CCH | 6 × 1013 | 7 × 1013 | 7 × 1012 |
| C3 | 7 × 1013 | 1 × 1014 | 3 × 1012 |
| CH2 | 4 × 1013 | 4 × 1013 | 1 × 1013 |
| H2O | 4 × 1014 | 2 × 1013 | 1 × 1013 |
| HCN | 1 × 1014 | 9 × 1012 | 2 × 1012 |
| H2S | 8 × 1012 | 6 × 1012 | 8 × 1010 |
| HNC | 3 × 1013 | 3 × 1012 | 1 × 1012 |
| HNO | 3 × 1013 | 8 × 1012 | 2 × 1013 |
| NH2 | 5 × 1013 | 1 × 1013 | 2 × 1012 |
| OCN | 8 × 1013 | 6 × 1011 | 4 × 1012 |
| C4 | 2 × 1012 | 4 × 1012 | 1 × 1011 |
| c-C3H | 6 × 1012 | 9 × 1012 | 5 × 1011 |
| l-C3H | 2 × 1012 | 3 × 1012 | 4 × 1011 |
| CH3 | 2 × 1014 | 1 × 1014 | 4 × 1013 |
| C2H2 | 5 × 1013 | 4 × 1013 | 3 × 1012 |
| NH3 | 5 × 1013 | 2 × 1013 | 5 × 1012 |
| C3N | 1 × 1013 | 2 × 1012 | 1 × 1011 |
| H2CO | 1 × 1013 | 1 × 1012 | 2 × 1012 |
| H2CS | 5 × 1012 | 2 × 1012 | 1 × 1010 |
| H2CN | 2 × 1012 | 3 × 1011 | 1 × 1011 |
| c-C3H2 | 3 × 1012 | 4 × 1012 | 3 × 1011 |
| l C4H | 4 × 1012 | 6 × 1012 | 3 × 1011 |
| CH4 | 8 × 1014 | 6 × 1014 | 3 × 1013 |
| HC3N | 2 × 1012 | 8 × 1011 | 1 × 1010 |
| H2CCN | 1 × 1013 | 1 × 1012 | 7 × 1009 |
| C2H3 | 5 × 1012 | 7 × 1012 | 1 × 1011 |
| CH2CCH | 2 × 1012 | 2 × 1012 | 2 × 1010 |
| C2H4 | 1 × 1013 | 7 × 1012 | 1 × 1011 |
| NC4N | 2 × 1013 | 9 × 1012 | 1 × 109 |
| C4H2 | 4 × 1012 | 6 × 1012 | 2 × 1011 |
| CH3OH | 4 × 1012 | 6 × 1011 | 1 × 1011 |
| CH2CHCN | 2 × 1012 | 5 × 1010 | 2 × 107 |
| C5H2 | 4 × 1012 | 4 × 1012 | 3 × 1010 |
| C6H2 | 3 × 1012 | 3 × 1012 | 1 × 1010 |
| C2H6 | 2 × 1015 | 1 × 1015 | 5 × 1011 |
| C7H2 | 3 × 1012 | 3 × 1012 | 1 × 109 |
| C8H2 | 4 × 1012 | 4 × 1012 | 9 × 108 |
| NC8N | 2 × 1012 | 1 × 1012 | 9 × 105 |
| C9H2 | 3 × 1012 | 3 × 1012 | 8 × 107 |
Notes. Selected species have a Model 1 column density larger than 2 × 1012 cm-2 and a Model 2 or 3 different from Model 1 by more than a factor of 3.
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