Table 3
Starless cores’ physical properties, measured column densities of the studied compounds, and estimated H2S, HDS, and D2S abundances.
| Starless core | Tkin (K) | Av (mag) | n(H2) (cm−3) | o-H2S(1) (cm−2) |  (cm−2) |
HDS (cm−2) | o-D2S (cm−2) | X(H2S)(2) | X(HDS) | X(D2S) |
|---|---|---|---|---|---|---|---|---|---|---|
| Taurus | ||||||||||
| B213-C1-1 | 10.9 | 26.9 | 1.23 × 104 | 1.14 × 1014 | 1.55 × 1013 | 3.25 × 1013 | 1.60 × 1012 | 1.73 × 10−08 | 1.21 × 10−09 | 8.94 × 10−11 |
| (8.83 × 103) | (2.58 × 1012) | (3.10 × 1012) | (6.49 × 1012) | (3.68 × 1011) | (3.45 × 10−09) | (2.41 × 10−10) | (2.05 × 10−11) | |||
| B213-C2-1 | 11 | 20.9 | 2.79 × 104 | 6.65 × 1012 | 8.17 × 1011 | 3.90 × 1012 | <1.33 × 1012 | 1.17 × 10−09 | 1.87 × 10−10 | <9.57 × 10−11 |
| (2.64 × 104) | (6.14 × 1011) | (1.63 × 1011) | (7.80 × 1011) | (2.34 × 10−10) | (3.73 × 10−11) | |||||
| B213-C5-1 | 11.9 | 23.6 | 4.68 × 104 | 1.49 × 1013 | <2.10 × 1012 | <1.63 × 1012 | 8.43 × 10−10 | <8.88 × 10−11 | <1.04 × 10−10 | |
| (3.29 × 104) | (6.70 × 1011) | (3.78 × 10−11) | ||||||||
| B213-C6-1 | 10.9 | 22.2 | 8.28 × 104 | 1.02 × 1013 | 1.98 × 1012 | <7.81 × 1011 | 6.10 × 10−10 | 8.90 × 10−11 | <5.28 × 10−11 | |
| (8.05 × 104) | (3.07 × 1011) | (3.95 × 1011) | (1.84 × 10−11) | (1.78 × 10−11) | ||||||
| B213-C10-1 | 11.2 | 20.7 | 4.32 × 104 | 4.37 × 1012 | <2.73 × 1012 | <1.19 × 1012 | 2.82 × 10−10 | <1.32 × 10−10 | <8.59 × 10−11 | |
| (5.09 × 104) | (5.87 × 1011) | (3.78 × 10−11) | ||||||||
| B213-C12-1 | 10.6 | 22.1 | 1.43 × 105 | 2.00 × 1012 | <9.32 × 1011 | <5.23 × 1011 | 1.21 × 10−10 | <4.22 × 10−11 | <3.55 × 10−11 | |
| (1.40 × 105) | (2.25 × 1011) | (1.36 × 10−11) | ||||||||
| B213-C16-1 | 10.3 | 24.8 | 2.07 × 104 | 8.57 × 1012 | <4.46 × 1012 | <3.51 × 1012 | 4.61 × 10−10 | <1.80 × 10−10 | <2.13 × 10−10 | |
| (1.83 × 104) | (1.07 × 1012) | (5.76 × 10−11) | ||||||||
| Perseus | ||||||||||
| IC348-C1-1 | 21.7 | 21.8 | 4.49 × 104 | 4.29 × 1013 | <2.24 × 1012 | <8.49 × 1011 | 2.62 × 10−09 | <1.03 × 10−10 | <5.84 × 10−11 | |
| (2.54 × 104 ) | (8.19 × 1011) | (5.01 × 10−11) | ||||||||
| L1448-C1 | 15.1 | 28.4 | 1.01 × 104 | 1.51 × 1014 | 1.98 × 1013 | 4.88 × 1013 | 2.29 × 1012 | 2.09 × 10−08 | 1.72 × 10−09 | 1.21 × 10−10 |
| (7.08 × 103) | (4.54 × 1012) | (3.96 × 1012) | (9.76 × 1012) | (5.55 × 1011) | (4.18 × t10−09) | (3.44 × 10−10) | (2.93 × 10−11) | |||
| 1333-C3-1 | 17.7 | 30.3 | 9.34 × 104 | 5.18 × 1013 | 1.71 × 1012 | <5.41 × 1011 | 2.28 × 10−09 | 5.65 × 10−11 | <2.68 × 10−11 | |
| (4.35 × 104) | (6.28 × 1011) | (3.42 × 1011) | (2.76 × 10−11) | (1.13 × 10−11) | ||||||
| 1333-C3-14 | 15.9 | 26.8 | 1.04 × 104 | 3.18 × 1014 | 2.82 × 1013 | 4.47 × 1013 | <2.62 × 1012 | 3.15 × 10−08 | 1.68 × 10−09 | <1.46 × 10−10 |
| (6.44 × 103) | (4.63 × 1012) | (5.63 × 1012) | (8.94 × 1012) | (6.31 × 10−09) | (3.33 × 10−10) | |||||
| 1333-C4-1 | 16.8 | 39.9 | 5.76 × 104 | 2.72 × 1014 | 2.90 × 1013 | 5.49 × 1013 | 4.49 × 1012 | 2.18 × 10−08 | 1.38 × 10−09 | 1.69 × 10−10 |
| (3.70 × 104) | (1.87 × 1012 ) | (5.79 × 1012) | (1.10 × 1013) | (8.97 × 1011) | (4.36 × 10−09) | (2.75 × 10−10) | (3.37 × 10−11) | |||
| 1333-C5-1 | 19.2 | 27.5 | 8.65 × 104 | 3.63 × 1013 | <2.02 × 1012 | <8.97 × 1011 | 1.76 × 10−09 | <7.34 × 10−11 | <4.89 × 10−11 | |
| (4.90 × 104) | (6.08 × 1011) | (2.95 × 10−11) | ||||||||
| 1333-C6-1 | 19.9 | 16.1 | 4.74 × 104 | 4.53 × 1013 | <1.92 × 1012 | <8.94 × 1011 | 3.75 × 10−09 | <1.19 × 10−10 | <8.33 × 10−11 | |
| (3.18 × 104) | (1.89 × 1012) | (1.56 × 10−10) | ||||||||
| 1333-C7-1 | 17.3 | 17.6 | 1.35 × 105 | 1.13 × 1013 | 2.20 × 1012 | <4.11 × 1011 | 8.56 × 10−10 | 1.25 × 10−10 | <3.50 × 10−11 | |
| (8.90 × 104) | (3.09 × 1011) | (4.39 × 1011) | (2.34 × 10−11) | (2.50 × 10−11) | ||||||
| 79-C1-1 | 15.4 | 19.9 | 1.93 × 104 | 4.09 × 1013 | 3.71 × 1012 | 1.89 × 1013 | 4.19 × 1012 | 5.59 × 10−09 | 9.50 × 10−10 | 3.16 × 10−10 |
| (1.86 × 104) | (4.63 × 1012) | (5.63 × 1012) | (8.94 × 1012) | (2.62 × 1012) | (1.13 × 10−10) | (1.90 × 10−10) | (6.32 × 10−11) | |||
| B1b | 11.9 | 76.0 | 3.15 × 105 | 2.69 × 1013 | 5.20 × 1012 | 1.40 × 1013 | 1.20 × 1012 | 2.05 × 10−09 | 1.84 × 10−10 | 2.37 × 10−11 |
| (3.00 × 105) | (3.75 × 1011) | (1.04 × 1012) | (2.80 × 1012) | (2.41 × 1011) | (4.11 × 10−10) | (3.68 × 10−11) | (4.75 × 10−12) | |||
| Orion | ||||||||||
| ORI-C1-2 | 18.1 | 173 | 3.43 × 104 | 4.28 × 1014 | 2.75 × 1013 | <3.74 × 1012 | <1.49 × 1012 | 4.77 × 10−09 | <2.16 × 10−11 | <1.30 × 10−11 |
| (1.95 × 104) | (2.18 × 1012) | (5.50 × 1012) | (9.54 × 10−10) | |||||||
| ORI-C2-3 | 22.8 | 56.5 | 2.61 × 104 | 8.09 × 1013 | 3.38 × 1012 | <3.64 × 1012 | <1.80 × 1012 | 1.80 × 10−09 | <6.44 × 10−11 | <4.77 × 10−11 |
| (1.72 × 104) | (3.20 × 1012) | (6.77 × 1011) | (3.59 × 10−10) | |||||||
Notes. Uncertainties are provided within parentheses. (1)Determination was made with direct line measures. (2)The abundance was estimated by scaling the 
column density using the 22.5 standard ratio (Gratier et al. 2016) in those cases where the isotopologue was available, or by direct determination of the o-H2S column density when the isotopologue was not available. An OPR of three was adopted for H2S, and of two for D2S.
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