Table 1
Line parameters obtained from the best LTE fit and abundance for HNCO, HC(O)NH2, CH3NCO (and their 13C-isotopologues), CH3C(O)NH2, CH3NHCHO, CH3CH2NCO, NH2C(O)NH2, NH2C(O)CN, and HOCH2C(O)NH2.
| FWHM | vLSR | Tex | N | X | |
|---|---|---|---|---|---|
| (km s−1) | (km s−1) | (K) | (×1016 cm−2) | (×10−9) | |
| HNCO, v = 0 | 8 | 97 ± 17 | 217 ± 22 | 11.5 ± 1.8 | 11 ± 3 |
| HNCO, v4 = 1 | 8 | 97 | 217 | 63 ± 8(a) | 63 ± 15(a) |
| HNCO, v5 = 1 | 8 | 97 | 217 | 79 ± 17(a) | 79 ± 23(a) |
| HNCO, v6 = 1 | 8 | 97 | 217 | ≤95(d) | ≤95 |
| HN13CO, v = 0 | 8 | 97 | 217 | 3.8 ± 0.5 | 3.8 ± 0.9 |
| HNCO(b) | 141 ± 49(c) | 141 ± 57(c) | |||
| H15NCO, v = 0 | 8 | 97 | 217 | 0.49 ± 0.09 (a) | 0.49 ± 0.13(a) |
| HC(O)NH2, v = 0 | 8.6 ± 0.2 | 97 ± 13 | 150 ± 26 | 5.4 ± 1.1 | 5.4 ± 1.5 |
| HC(O)NH2, v12 = 1 | 8.4 ± 0.2 | 97 | 245 ± 88 | 15 ± 2 | 15 ± 4 |
| H13C(O)NH2, v = 0 | 8.6 | 97 | 150 | 0.47 ± 0.07 | 0.47 ± 0.11 |
| HC(O)NH2(b) | 17 ± 6(c) | 17 ± 7(c) | |||
| CH3NCO, vb = 0 | 7.15 ± 0.15 | 97 ± 11 | 122 ± 7 | 4.3 ± 0.6 | 4.3 ± 1.0 |
| CH3NCO, vb = 1 | 7.15 | 97 | 91 ± 37 | 12 ± 3(c) | 12 ± 4(c) |
| 13CH3NCO, vb = 0 | 7.15 | 97 | 122 | 0.49 ± 0.09(a) | 0.49 ± 0.13(a) |
| CH3N13CO, vb = 0 | 7.15 | 97 | 122 | ≤0.63(d) | <0.63 |
| CH3NCO(b) | 18 ± 7 | 18 ± 9 | |||
| CH3C(O)NH2, v = 0, vt = 1, 2 | 6.2 ± 0.4 | 96.7 | 285 ± 50 | 8 ± 4(c) | 8 ± 4(c) |
| CH3NHCHO, v = 0 | 7 | 96.5 | 285 | 3.7 ± 1.6(c) | 3.7 ± 1.7(c) |
| CH3NHCHO, vt = 1 | 7 | 96.5 | 285 | ≤2.3(d) | ≤2.3 |
| CH3NHCHO, vt = 2 | 7 | 96.5 | 285 | ≤2.1(d) | ≤2.1 |
| CH3CH2 NCO, v = 0 | 7.15 | 97 | 91 | ≤0.5(d) | ≤0.5 |
| NH2C(O)NH2 v = 0 | 7 | 96.5 | 150 | ≤0.016(d) | ≤0.016 |
| NH2C(O)CN, v = 0 | 7 | 96.5 | 150 | ≤0.3(d) | ≤0.3 |
| HOCH2C(O)NH2, v = 0 | 7 | 96.5 | 150 | ≤0.07(d) | ≤0.07 |
Notes. N is the average column density inside the beam of 1.′′2; X is the abundance inside a beam calculated as N/
, where 
= (1.0 ± 0.2) × 1025 cm−2. Parameters without errors are fixed in the fitting procedure, as explained in Sect. 2.3.
(a) Tentative detection. (b) Column density and abundances derived from the 13C-isotopologue multiplied by 12 C/13C = 37 ± 12 (Yan et al. 2019). In the case of CH3NCO we have used the 13 CH3NCO column density. (c)Value used for the discussion in Sect. 4. (d)We note that this upper limit should be taken with caution since it has been derived by eye because all of the transitions are contaminated by other species.
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