Table 1
Column densities and rotational temperatures of the observed molecules.
| Molecule | Trot† | Nmol | Ref. | |
| K | cm-2 | |||
|
|
||||
| 12CO | 5.0 ± 0.3 | (3.8 ± 0.3) × 1018 | a | |
| 38.4 ± 6.5 | (1.2 ± 0.3) × 1018 | a | ||
| 13CO | 4.3 ± 0.2 | (3.2 ± 0.3) × 1017 | a | |
| 24.1 ± 6.3 | (7.8 ± 2.8) × 1016 | a | ||
| C18O | 3.3 ± 0.1 | (1.0 ± 0.1) × 1017 | b | |
| C2H | 10.0 ± 5.0 | (1.0 ± 0.5) × 1016 | ||
| CN | 8.8 ± 0.1 | (5.0 ± 0.1) × 1015 | d | |
| 51.4 ± 36.0 | (5.8 ± 4.4) × 1015 | d | ||
| CH3OH | 5.6 ± 0.1 | (2.3 ± 0.1) × 1015 | ||
| HCN | 5.0 ± 0.3 | (1.4 ± 0.2) × 1015 | e | |
| CS | 7.1 ± 0.4 | (7.6 ± 2.2) × 1014 | c | |
| 33.0 ± 13.1 | (7.0 ± 4.2) × 1013 | c | ||
HC
N
|
7.3 ± 1.4 | (6.0 ± 4.0) × 1014 | ||
| HCO+ | 4.9 ± 0.1 | (5.3 ± 0.2) × 1014 | e | |
| HNC | 7.6 ± 0.2 | (4.9 ± 0.5) × 1014 | d | |
| HCO | 10.0 ± 5.0 | (2.1 ± 1.3) × 1014 | ||
| SO | 22.8 ± 18.6 | (3.2 ± 3.3) × 1014 | ||
| NS | 10.0 ± 5.0 | (2.8 ± 1.4) × 1014 | ||
| HNCO | 29.7 ± 0.1 | (2.8 ± 0.1) × 1014 | ||
CN
|
8.8 ± 0.1 | (2.2 ± 0.1) × 1014 | ||
N
H
|
10.0 ± 5.0 | (1.1 ± 0.5) × 1014 | ||
| C34S | 3.6 ± 0.5 | (1.6 ± 0.6) × 1014 | b | |
| H13CN | 5.0 ± 0.3 | (8.7 ± 0.5) × 1013 | ||
| SiO | 3.8 ± 0.2 | (6.4 ± 0.8) × 1013 | x | |
|
CH
CN
|
10.2 ± 0.1 | (3.9 ± 0.1) × 1013 | ||
| H13CO+ | 4.9 ± 0.1 | (3.1 ± 0.1) × 1013 | ||
|
HN
C
|
7.6 ± 0.2 | (2.1 ± 3.2) × 1013 | ||
| HOC+ | 4.9 ± 0.1 | (1.1 ± 0.6) × 1013 | ||
|
|
||||
| c − C3H2 | 7.6 | (1.7 ± ...) × 1013 | f | |
| NH3 | (1.1 ± 0.2) × 1014 | g | ||
Notes. Molecules in boldface are new detections in NGC 1068. The values given in this table are already corrected by beam dilution effects.
For those molecules with only one rotational transition available, we assumed Trot = 10 ± 5 K. See Sect. 2 for details.
References. Last column refers to detections taken from the literature: (a) Israel (2009); (b) Martín et al. (2009); (c) Bayet et al. (2009b); (d) Pérez-Beaupuits et al. (2009); (e) Krips et al. (2008); (x) Usero et al. (2004). c-C3H2 and NH3 were not detected in this survey, but were compiled from the literature; (f) Nakajima et al. (2011); and (g) Ao et al. (2011).
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