Table D.4
Comparison of HCN column densities calculated from HCN 1-0 and H13CN 1-0 observations.
| Source | N(HCN) |
N(HCN) |
N(H13CN) | Ratios |
|---|---|---|---|---|
| hyperfine | full profile | × 68 | ||
| 1014 (cm−2) | 1014 (cm−2) | 1014 (cm−2) | ||
| SMM1 | 4.8(±0.8) | 1.7(±0.3) | 6.0(±0.1) | 1.3-3.5 |
| SMM2 | 5.8(±0.9) | 2.1(±0.3) | 5.7(± 0.1) | 1.0-2.7 |
| SMM3 | 7.0(±1.1) | 2.4(±0.8) | 2.1(± 0.1) | 0.3-0.9 |
| SMM4 | 8.9(±1.4) | 3.6(±0.5) | 6.1(±0.1) | 0.7-1.7 |
| SMM5 | 2.3(± 0.4) | 0.7(±0.1) | 2.9(± 0.1) | 1.3-4.1 |
| SMM6 | 5.7(± 0.9) | 2.2(±0.3) | 3.3(± 0.1) | 0.6-1.5 |
| SMM8 | - | 1.1(±0.2) | 0.5(± 0.1) | 0.5 |
| SMM9 | - | 3.4(±0.5) | 9.0(± 0.1) | 2.6 |
| SMM10 | - | 1.2(±0.2) | 3.9(± 0.1) | 3.3 |
| SMM12 | 7.5(± 1.1) | 2.3(±0.4) | 6.1(± 0.1) | 0.8-2.7 |
Notes. N(HCN)
refers to HCN column densities corrected for the optical depths calculated using the ratio of F=2 →1 and F=1 →1 hyperfine components (see Table E.4).
N(HCN)
refers to HCN column densities calculated using optical depths assuming that H13 CN is optically thin (see Table E.3). The range of ratios of HCN column densities scaled from the H13 CN column densities and the HCN column densities corrected for optical depths are shown in the last column.
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