Table 4
Local thermodynamic equilibrium molecular column densities in the Chamaeleon MMS1 and C2 cores compared to TMC-1.
| Molecule | N(MMS1) (cm−2) | N(C2) (cm−2) | N(TMC-1) (cm−2) |
|---|---|---|---|
| HC3N | 1.7 × 1013 | 8.1 × 1012 | 2.3 × 1014 |
| HC5N | 3.7 × 1012 | 2.2 × 1012 | 5.9 × 1013 |
| HC7N | 6.8 × 1011 | 3.4 × 1011 | 4.6 × 1013 |
| c-C3H2 | 3.1 × 1013 | 1.5 × 1013 | 1.9 × 1013 |
| c-C3HD | 6.8 × 1012 | 3.7 × 1012 | 5.1 × 1012 |
| CCS | 1.4 × 1013 | 1.5 × 1013 | 1.0 × 1014 |
| C3S | 2.5 × 1012 | 2.8 × 1012 | 1.4 × 1013 |
| C4H | 1.2 × 1013 | 1.1 × 1013 | 1.3 × 1014 |
| 15NH3 | 5.3 × 1012 | <8.0 × 1012 | |
| NH3 | 3.7 × 1015 | 2.6 × 1015 | 5.0 × 1014 |
| c-C6H5CN | <8.9 × 1011 | <6.0 × 1011 | 4 × 1011 |
Notes. We assumed Tex = 8.5 K for all molecules except for ammonia isotopologues, for which Tex = 7.6 and 5.5 K in Cha-MMS1 and Cha- C2, respectively. The TMC-1 values correspond to the cyanopolyyne peak (Gratier et al. 2016; McGuire et al. 2018). The ammonia column densities computed using Weeds have been multiplied by 1.038 (see Appendix B). The upper limits are 3σ.
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