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Table 6
Integrated line intensity ratios.
| Species | NGC 4945 | NGC 253 | |
|---|---|---|---|
| 430 km s−1 | 710 km s−1 | ||
| I(HCN)/I(CS) | 2.5 ± 0.3 | 2.5 ± 0.3 | 2.0 ± 0.2 |
| I(HCN)/I(c-C3H2) | 8.7 ± 0.9 | 6.7 ± 0.7 | 11.4 ± 0.2 |
| I(HCN)/I(H13CN) | 16.7 ± 1.7 | 14.8 ± 1.5 | 14.5 ± 0.4 |
| I(c-C3H2/I(HC18O+) | 4.9 ± 0.5 | 5.5 ± 0.6 | 7.1 ± 0.5 |
| I(HCN)/I(SiO) | 26.1 ± 2.6 | 22.2 ± 2.2 | 14.4 ± 0.2 |
| I(CS)/I(SiO) | 10.6 ± 1.1 | 8.9 ± 0.9 | 7.1 ± 0.1 |
| I(c-C3H2)/I(CH3C2H) | 4.2 ± 0.4 | 3.3 ± 0.3 | 2.3 ± 0.1 |
| I(H13CN)/I(H13CO+) | 2.0 ± 0.2 | 1.0 ± 0.1 | 1.2 ± 0.1 |
Notes. For the specific λ ≈ 3 mm transitions and frequencies, see Table 1. For the NGC 4945 ratios, derived from Table 5, an uncertainty of 10% has been conservatively adopted. For NGC 253, see Table A.2 of Aladro et al. (2015).
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