Table 1.
Derived column densities for the isomers of HNCO and HNCS.
| Species | Trot | μa | N(A) | Notes |
|---|---|---|---|---|
| (K) | (D) | (cm−2) | ||
| HCNS | 7.0 | 3.85 | (9.0 ± 0.5) × 1009 | a |
| HNCS | 6.0 | 1.64 | (3.2 ± 0.1) × 1011 | b |
| HSCN | 5.2 | 3.33 | (8.3 ± 0.4) × 1011 | c |
| HSNC | 5.2 | 3.13 | ≤4 × 1009 | a |
| NCS | 5.5 | 2.45 | (9.5 ± 0.2) × 1011 | d |
| HNCO | 8.0 | 1.58 | (1.1 ± 0.1) × 1013 | d |
| HCNO | 5.5 | 3.10 | (7.8 ± 0.2) × 1010 | e |
| HOCN | 5.5 | 3.70 | (1.5 ± 0.2) × 1011 | f |
| HONC | 5.5 | 3.13 | ≤5 × 1009 | g |
| NCO | 8.0 | 0.64 | (7.4 ± 0.5) × 1011 | h |
| H2NCO+ | 5.5 | 4.13 | (1.8 ± 0.4) × 1010 | i |
| H34SCN | 5.2 | 3.33 | (2.1 ± 0.3) × 1010 | j |
| DSCN | 5.2 | 3.33 | (2.1 ± 0.3) × 1010 | j |
| H15NCO | 8.0 | 1.58 | (3.3 ± 0.3) × 1010 | j |
| HN13CO | 8.0 | 1.58 | (2.1 ± 0.1) × 1011 | j |
| DNCO | 8.0 | 1.58 | (2.5 ± 0.2) × 1011 | j |
| DCNO | 5.5 | 3.10 | (3.1 ± 0.4) × 1009 | j |
Notes.
Column densities for the isomers of HCNS, together with the most abundant S-bearing species, were reported by Cernicharo et al. (2021b). The present estimations are ∼20% larger due to the recalibration of the QUIJOTE data in 2023 (Cernicharo et al. 2023a).
(a)μa from McGuire et al. (2016). (b)μa from Szalanski et al. (1978). (c)μa from Woon & Herbst (2009). (d)μa from CDMS (Müller et al. 2005). (e)μa from Takashi et al. (1989). (f)μa from Brünken et al. (2009a). (g)μa from Mladenovic et al. (2009). (h)μa from Saito & Amano (1970). (i)μa from Gupta et al. (2013). (j) Assumed identical to that of the main isotopologue.
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