Table 3.
Flux ratios of dense-gas tracers to CO and [C I] lines.
| Source | IHCN/ICO mid − J | IHCO+/ICO mid − J | IHNC/ICO mid − J | IHCN/ICO10 | IHCO+/ICO10 | IHCN/I[C I]10 |  |
|---|---|---|---|---|---|---|---|
| PLCK_G092.5+42.9 | < 0.022 | 0.052 ± 0.007 | < 0.031 | < 0.10 | 0.24 ± 0.09 | < 0.059 | 0.14 ± 0.04 |
| PLCK_G145.2+50.9 | < 0.015 | 0.018 | 0.008 | < 0.11 | 0.12 | < 0.05 | 0.06 ± 0.03 |
| PLCK_G244.8+54.9 | 0.064 ± 0.023 ( † ) | 0.084 ± 0.034 ( † ) | 0.061 ± 0.025 ( † ) | 0.40 ± 0.23 ( † ) | 0.52 ± 0.30 ( † ) | 0.07 ( † ) | 0.09 ( † ) |
| 0.071 ± 0.009 | 0.072 ± 0.008 | 0.066 ± 0.018 | 0.56 ± 0.22 | 0.56 ± 0.21 | 0.10 | 0.10 |
Notes. Dense-gas to CO and [C I] flux ratios derived from values in Table 2, from the line measurements of C18 and N19, and from Harrington et al. (2018). All rotational levels are J = 5–4, except for PLCK_G244.8+54.9 where ratios marked with a dagger correspond to J = 4–3. We do not list uncertainties when the [C I] or CO line flux is converted from another transition (see Sect. 4.1). CO(1–0) in PLCK_G145.2+50.9 is extrapolated using the average ratio ICO(4 − 3)/ICO(1 − 0) ≃ 5.1 in the GEMS.
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