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Table 3
Source-averaged column densities [cm-2].
| Molecule | NGC 1068 | NGC 7469 | Arp 220 | Mrk 231 | ||||
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| 13CO | (4.6 ± 0.1) × 1017 | (3.6 ± 0.2) × 1016 | (6.6 ± 0.4) × 1017 | (5.6 ± 0.9) × 1016 | ||||
| C18O | (1.29 ± 0.04) × 1017 | (6.4 ± 1.3) × 1015 | (6.2 ± 0.4) × 1017 | (4.9 ± 0.9) × 1016 | ||||
| C17O | ≤ 1.0 × 1016 | ≤ 3.9 × 1015 | ≤ 2.9 × 1016 | ≤ 2.2 × 1016 | ||||
| HCN | (2.45 ± 0.04) × 1015 | (1.04 ± 0.08) × 1014 | (4.6 ± 0.1) × 1015 | (8.5 ± 0.7) × 1014 | ||||
| H13CN | (8.1 ± 0.8) × 1013 | ≤ 1.4 × 1013 | (7.1 ± 0.5) × 1014 | (2.0 ± 0.5) × 1014 | ||||
| HNC | (7.0 ± 0.1) × 1014 | (4.2 ± 0.5) × 1013 | (3.2 ± 0.2) × 1015 | (2.5 ± 0.7) × 1014 | ||||
| HN13C | (2.4 ± 0.6) × 1013 | ≤ 1.6 × 1013 | ≤ 1.3 × 1014 | ≤ 1.8 × 1014 | ||||
| HCO+ | (9.1 ± 0.2) × 1014 | (7.4 ± 0.5) × 1013 | (1.12 ± 0.06) × 1015 | (3.3 ± 0.3) × 1014 | ||||
| H13CO+ | ≤ 9.0 × 1012 | ≤ 8.0 × 1012 | (9.8 ± 3.2) × 1013 | ≤ 9.1 × 1013 | ||||
| HC18O+ | – | – | – | – | ||||
| HOC+ | (1.6 ± 0.4) × 1013 | ≤ 6.8 × 1012 | ≤ 5.6 × 1013 | ≤ 6.2 × 1013 | ||||
| HCO | (2.6 ± 0.8) × 1014 | ≤ 7.1 × 1013 | ≤ 5.7 × 1014 | ≤ 8.0 × 1014 | ||||
| C2H | (1.10 ± 0.02) × 1016 | (1.0 ± 0.1) × 1015 | (2.2 ± 0.1) × 1016 | (3.4 ± 0.7) × 1015 | ||||
| CN | (6.85 ± 0.06) × 1015 | (4.6 ± 0.2) × 1014 | (6.1 ± 0.2) × 1015 | (1.8 ± 0.1) × 1015 | ||||
| 13CN | ≤ 1.5 × 1014 | ≤ 6.6 × 1013 | ≤ 5.8 × 1014 | ≤ 1.4 × 1014 | ||||
| CH3OH | (2.4 ± 0.2) × 1015 | ≤ 1.8 × 1014 | (5.6 ± 0.6) × 1015 | ≤ 2.6 × 1015 | ||||
| CS | (7.6 ± 0.2) × 1014 | (8.1 ± 1.0) × 1013 | (3.36 ± 0.08) × 1015 | (3.5 ± 0.8) × 1014 | ||||
| C34S | (1.3 ± 0.2) × 1014 | ≤ 3.0 × 1013 | (9.6 ± 1.3) × 1014 | ≤ 2.3 × 1014 | ||||
| 13CS | ≤ 3.6 × 1013 | ≤ 3.0 × 1013 | ≤ 2.0 × 1014 | ≤ 2.0 × 1014 | ||||
| HC3N | (1.50 ± 0.07) × 1014 | ≤ 5.0 × 1013 | (2.7 ± 0.2) × 1015 | (2.1 ± 0.5) × 1014 | ||||
| SO | (2.2 ± 0.4) × 1014 | ≤ 6.9 × 1013 | ≤ 4.4 × 1014 | ≤ 5.0 × 1014 | ||||
| SO2 | ≤ 7.4 × 1015 | ≤ 1.1 × 1014 | ≤ 9.2 × 1014 | ≤ 1.1 × 1015 | ||||
| NS | ≤ 9.6 × 1013 | ≤ 8.0 × 1013 | ≤ 3.1 × 1014 | ≤ 5.5 × 1014 | ||||
| HNCO | (3.2 ± 0.4) × 1014 | ≤ 6.0 × 1013 | (1.8 ± 0.9) × 1015 | ≤ 3.0 × 1014 | ||||
| N2H+ | (1.2 ± 0.5) × 1014 | ≤ 8.2 × 1012 | (5.9 ± 0.3) × 1014 | ≤ 5.4 × 1013 | ||||
| SiO | (6.8 ± 0.8) × 1013 | ≤ 1.5 × 1013 | (6.3 ± 0.7) × 1014 | ≤ 1.7 × 1014 | ||||
| CH3CN | (1.0 ± 2.9) × 1014 | ≤ 1.7 × 1013 | (9.2 ± 1.7) × 1014 | ≤ 9.1 × 1013 | ||||
| CH3CCH | ≤ 5.7 × 1014 | ≤ 3.7 × 1014 | (3.7 ± 0.8) × 1015 | ≤ 4.0 × 1015 | ||||
| c-C3H2 | ≤ 2.7 × 1016 | ≤ 3.9 × 1015 | ≤ 4.4 × 1016 | ≤ 5.3 × 1014 | ||||
| NH2CN | ≤ 2.6 × 1013 | ≤ 2.2 × 1013 | ≤ 1.5 × 1014 | ≤ 1.8 × 1014 | ||||
| HOCO+ | ≤ 7.7 × 1013 | ≤ 4.4 × 1013 | ≤ 3.7 × 1014 | ≤ 3.5 × 1014 | ||||
| OCS | ≤ 8.9 × 1014 | ≤ 8.2 × 1014 | ≤ 6.1 × 1015 | ≤ 9.2 × 1015 | ||||
| C2S | ≤ 1.2 × 1014 | ≤ 9.3 × 1013 | ≤ 6.5 × 1014 | ≤ 7.1 × 1014 | ||||
| H2CS | ≤ 1.6 × 1014 | ≤ 9.0 × 1013 | ≤ 6.6 × 1014 | ≤ 7.6 × 1014 | ||||
| HC5N | ≤ 5.4 × 1015 | ≤ 4.9 × 1015 | ≤ 4.0 × 1016 | ≤ 3.9 × 1016 | ||||
| CH3CHO | ≤ 4.6 × 1014 | ≤ 1.2 × 1014 | ≤ 7.2 × 1014 | ≤ 1.3 × 1015 | ||||
Notes. Molecules in boldface are new detections in a given galaxy. Column densities have been calculated for molecules clearly detected, and for those tentatively detected. Upper limits are shown for undetected species.
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