Table 7.
Physical parameters derived from the LVG models.
| Species | log(nH2) | log(Tkin) | log(N/dV) | |||
|---|---|---|---|---|---|---|
| log(cm−3) | log(K) | log(cm−2/km s−1) | ||||
| APM | NC | APM | NC | APM | NC | |
| CO | 3.6 |
3.0 |
2.3 |
2.8 |
18.2 |
17.3 |
| HCN | 6.7 |
6.0 |
1.8 |
2.0 |
14.8 |
13.9 |
| HCO+ | 4.7 |
5.5 |
1.7 |
1.5 |
12.5 |
13.3 |
| HNC | 6.2 |
5.6 |
2.1 |
2.0 |
14.4 |
13.8 |
| CS | 6.3 |
5.6 |
2.0 |
1.8 |
15.5 |
14.0 |
| C34S | 5.4 |
– | 1.8 |
– | 13.9 |
– |
Notes. LVG-MCMC-derived parameters; the median values and the ±1σ uncertainties are noted. The results where only two lines were detected in NCv1.143 are also included despite their large uncertainties, which are well captured by the posterior distributions shown in the corner plots (Figs. B.1 and B.2). For comparison, we also include the LVG model results of CO, using the line fluxes from Weiß et al. (2007) and Yang et al. (2017), which trace much less extreme physical conditions compared to the dense gas tracers.
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