Table 1.
Column densities of sulfur-bearing species in TMC-1.
| Molecule | Trot (K) | Nobs (cm−2) | Ncalc (cm−2) (e) |
|---|---|---|---|
| CS (a)( * ) | 10.0 | (3.50 ± 0.40) × 1014 | 3.1 × 1014 |
| C34S (*) | 10.0 | (1.45 ± 0.10) × 1013 | |
| 13C34S (*) | 10.0 | (1.45 ± 0.20) × 1011 | |
| HCS | 5.0 (b) | (5.50 ± 0.50) × 1012 | 5.1 × 1010 |
| HSC | 5.0 (b) | (1.30 ± 0.20) × 1011 | |
| NCS | 5.0 (b) | (7.80 ± 0.60) × 1011 | 2.5 × 1010 |
| HCCS | 5.0 (b) | (6.80 ± 0.60) × 1011 | 3.1 × 1010 |
| H2CS (c) | 10.0 | (4.70 ± 0.40) × 1013 | 9.5 × 1012 |
| H2C34S (c) | 10.0 | (1.80 ± 0.18) × 1012 | |
| o-H2CCS | 7.0 ± 1.0 | (6.00 ± 0.60) × 1011 | }1.8 × 1012 |
| p-H2CCS | 7.0 ± 1.0 | (1.80 ± 0.20) × 1011 | |
| o-H2CCCS | 10.0 ± 1.0 | (3.00 ± 0.30) × 1011 | }7.8 × 1010 |
| p-H2CCCS | 10.0 ± 1.0 | (6.50 ± 0.60) × 1010 | |
| CCS (*) | 5.1 ± 0.2 | (5.50 ± 0.65) × 1013 | 3.8 × 1011 |
| CC34S (*) | 3.6 ± 0.4 | (5.00 ± 0.50) × 1012 | |
| CCCS (*) | 5.8 ± 0.2 | (1.30 ± 0.13) × 1013 | 1.1 × 1013 |
| CCC34S (*) | 6.7 ± 0.2 | (5.30 ± 0.50) × 1011 | |
| C4S | 7.0 ± 1.0 | (3.80 ± 0.50) × 1010 | 1.6 × 1010 |
| C5S | 7.0 ± 1.0 | (5.00 ± 1.00) × 1010 | 1.9 × 1011 |
| HCS+(*) | 10.0 | (1.00 ± 0.10) × 1013 | 1.7 × 1011 |
| HC34S (*) | 10.0 | (7.10 ± 0.70) × 1011 | |
| HC3S+(*) | 10.0 ± 2.0 | (4.00 ± 1.50) × 1011 | 2.8 × 1011 |
| HSCN | 5.0 | (5.80 ± 0.60) × 1011 | 3.7 × 109 |
| HNCS | 5.0 | (3.80 ± 0.40) × 1011 | 1.2 × 1010 |
| HC3S (d) | 5.0 | ≤2.40 × 1011 | 1.5 × 1011 |
| HCNS (d) | 10.0 | ≤6.00 × 1010 | 3.9 × 106 |
| HSNC (d) | 10.0 | ≤2.00 × 1010 | |
| HSCS+(d) | 5.0 | ≤4.00 × 1012 | |
| HCCSH (d) | 7.0 | ≤3.00 × 1012 | |
| HCCCSH (d) | 7.0 | ≤2.40 × 1011 |
Notes.
Data from Cernicharo et al. (2021a).
Column density refers to the ortho or para species. Assuming an ortho/para ratio of 3, the total column density can be estimated by multiplying the para value by a factor of 4.
Upper limits correspond to 3σ values derived assuming the indicated rotational temperature and a linewidth of 0.6 km s−1.
Maximum fractional abundance calculated in the 105–106 yr range was converted to column density using N(H2) = 1022 cm−2 (Cernicharo & Guélin 1987).
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