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Table 2
Upper limits to the column densities of some undetected species.
| Molecule | Nmol | Molecule | Nmol | |
| cm-2 | cm-2 | |||
|
|
||||
| H2CO | ≤1.1 × 1016 | H2CS | ≤ 2.6 × 1014 | |
| OCS | ≤5.4 × 1014 | C2S | ≤8.9 × 1013 | |
| CH2NH | ≤5.4 × 1014 | HOCO+ | ≤7.0 × 1013 | |
| CH3CCH | ≤4.5 × 1014 | 13CS | ≤3.6 × 1013 | |
| SO2 | ≤3.6 × 1014 | NH2CN | ≤2.8 × 1013 | |
| c-C3H | ≤2.9 × 1014 | |||
Notes. See Sect. 4 for details about the calculations.
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