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Table 2
Isotope ratios derived with the J = 2−1 transitions of C34S, 13CS, and 13C34S.
| Source | VLSR | RGC | Optical depth | Corrections for Optical depth | 12C/13C | 32S/34S | |||
|---|---|---|---|---|---|---|---|---|---|
| (km s−1) | (kpc) | CS | C34S | 13CS | f1 | f2 | |||
| W3OH | −46.96 | 9.64 ±0.03 | 8.289 ±0.083 | 0.292 ±0.003 | 0.127 ±0.001 | 1.2 | 1.1 | 75.30 ± 4.27 | 29.80 ± 1.68 |
| Orion-KL | 8.17 | 8.54 ±0.00 | 3.722 ±0.037 | 0.180 ±0.002 | 0.074 ± 0.001 | 1.1 | 1.0 | 54.89 ± 12.90 | 21.24 ±4.67 |
| G359.61−00.24 | 19.33 | 5.51 ±0.15 | 3.531 ±0.035 | 0.204 ±0.002 | 0.089 ±0.001 | 1.1 | 1.0 | 43.85 ± 11.95 | 17.31 ± 4.79 |
| +50 km s−1 cloud | 46.79 | 0.02 ±0.04 | 4.278 ± 0.043 | 0.192 ±0.002 | 0.151 ±0.002 | 1.1 | 1.1 | 31.22 ±2.06 | 21.71 ± 1.40 |
| SgrB2 | 53.18 | 0.55 ±0.05 | 1.290 ±0.013 | 0.140 ±0.001 | 0.113 ±0.001 | 1.1 | 1.1 | 12.18 ±0.73 | 9.77 ±0.58 |
| SgrB2 | 66.54 | 0.44 ±0.70 | 8.119 ±0.081 | 0.523 ±0.005 | 0.341 ± 0.003 | 1.3 | 1.2 | 30.62 ±2.04 | 18.99 ±1.31 |
| SgrB2 | 83.38 | 0.41 ±0.02 | 2.417 ± 0.024 | 0.097 ±0.001 | 0.077 ± 0.001 | 1.0 | 1.0 | 32.90 ±5.65 | 26.24 ± 4.49 |
| G006.79−00.25 | 20.87 | 4.75 ± 0.25 | 8.789 ±0.088 | 0.484 ±0.005 | 0.242 ±0.002 | 1.3 | 1.1 | 45.82 ±8.39 | 19.46 ±3.63 |
| G010.32−00.15 | 11.99 | 5.34 ±0.29 | 5.039 ±0.050 | 0.237 ±0.002 | 0.111 ±0.001 | 1.1 | 1.1 | 50.95 ±11.58 | 21.55 ±5.05 |
| G019.36−00.03 | 26.40 | 5.58 ±0.49 | 6.789 ±0.068 | 0.332 ±0.003 | 0.141 ±0.001 | 1.2 | 1.1 | 56.41 ± 14.37 | 21.19 ±5.53 |
| G024.78+00.08 | 110.72 | 3.51 ±0.15 | 8.038 ±0.080 | 0.554 ±0.006 | 0.322 ±0.003 | 1.3 | 1.2 | 32.56 ±4.25 | 16.08 ±2.12 |
| G028.39+00.08 | 78.01 | 4.83 ±0.17 | 8.705 ±0.087 | 0.443 ± 0.004 | 0.291 ±0.003 | 1.2 | 1.2 | 37.04 ± 10.05 | 18.74 ±5.12 |
| G028.83−00.25 | 87.19 | 4.50 ±0.48 | 7.283 ± 0.073 | 0.388 ±0.004 | 0.183 ±0.002 | 1.2 | 1.1 | 47.93 ± 10.00 | 19.73 ±4.16 |
| G030.70−00.06 | 89.94 | 4.20 ±0.10 | 7.088 ± 0.071 | 0.448 ± 0.004 | 0.263 ±0.003 | 1.2 | 1.1 | 33.39 ±2.77 | 18.07 ± 1.52 |
| G030.74−00.04 | 91.82 | 5.76 ±0.36 | 5.924 ±0.059 | 0.404 ± 0.004 | 0.191 ±0.002 | 1.2 | 1.1 | 37.63 ± 10.87 | 15.61 ±4.59 |
| G030.81−00.05 | 98.89 | 5.73 ±0.24 | 4.691 ± 0.047 | 0.306 ±0.003 | 0.187 ±0.002 | 1.2 | 1.1 | 29.07 ± 2.99 | 14.97 ± 1.44 |
| W51-IRS2 | 61.07 | 6.22 ±0.06 | 1.883 ±0.019 | 0.119 ±0.001 | 0.052 ±0.001 | 1.1 | 1.0 | 38.26 ±4.35 | 16.70 ± 1.92 |
| DR21 | −2.49 | 8.10 ±0.00 | 7.079 ± 0.071 | 0.270 ± 0.003 | 0.106 ±0.001 | 1.1 | 1.1 | 76.22 ± 7.57 | 27.48 ± 2.84 |
| NGC7538 | −57.12 | 9.47 ± 0.07 | 3.433 ±0.034 | 0.131 ±0.001 | 0.050 ±0.001 | 1.1 | 1.0 | 73.19 ± 12.54 | 26.72 ±4.57 |
Notes. Velocities were obtained from measurements of C34S, see Table A.3.
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