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Table 3
Molecular excitation temperatures and column densities obtained by fitting the observed spectral lines.
| Source | H13CO+ | DCO+ | oH2D+ | C18O | ||||
|---|---|---|---|---|---|---|---|---|
| Tex(a) | Ncol | Tex(a) | Ncol | Tex(a) | Ncol | Tex(a) | Ncol | |
| K | 1011 cm−2 | K | 1011 cm−2 | K | 1013 cm−2 | K | 1015 cm−2 | |
| Tau 410 | 7.5 | 1.28 ± 0.10 | 10.8 | 0.88 ± 0.12 | 10.8 | 0.18 ± 0.03 | 11.4 | 0.816 ± 0.019 |
| Tau 420 | 28 ± 9 | 0.89 ± 0.08 | 9.4 ± 0.4 | 6.0 ± 0.5 | 9.4 | 0.24 ± 0.04 | 12.8 | 1 .45 ± 0.02 |
| TMC1-C | 7.5 | 1.18 ± 0.10 | 10.7 | 1.43 ± 0.17 | 10.7 | 0.070 ± 0.013 | 11.3 | 1.22 ± 0.02 |
| L1544 | 6.7 | 2.5 ± 0.2 | 9.6 | 4.87 ± 0.18 | 9.6 | 0.98 ± 0.08 | 10.2 | 1.16 ± 0.02 |
| L183 | 6.8 ± 0.6 | 1.5 ± 0.2 | 9.1 | 5.22 ± 0.18 | 9.1 | 1.28 ± 0.08 | 9.6 | 1.68 ± 0.02 |
| L429 | 5.4 ± 0.3 | 4.3 ± 0.7 | 9.3 | 8.9 ± 0.3 | 9.3 | 1.35 ± 0.06 | 9.9 | 1 .11 ± 0.03 |
| L694-2 | 5.6 ± 0.5 | 3.3 ± 0.7 | 9.3 | 5.7 ± 0.2 | 9.3 | 0.72 ± 0.06 | 9.8 | 1 .31 ± 0.03 |
| Oph 1 | 5.2 ± 0.4 | 3.0 ± 0.7 | 6.7 ± 0.3 | 13±2 | 6.7 | 1.76 ± 0.14 | 13.4 | 2.20 ± 0.05 |
| Oph 2 | 6.0 ± 0.3 | 7.6 ± 0.8 | 10.2 ± 0.3 | 17.1 ± 0.8 | 10.2 | 0.46 ± 0.03 | 13.3 | 3.20 ± 0.03 |
| Oph 3(b) | – | 22.5 ± 1.8 | – | 26.8 ± 1.5 | – | 0.20 ± 0.08 | – | 6.20 ± 0.14 |
| Oph 4(b) | – | 15.6 ± 1.3 | – | 28 ± 3 | – | 1.0 ± 0.3 | – | 8.5 ± 0.4 |
| Oph 5 | 6.3 ± 0.2 | 11.0 ± 1.0 | 5.90 ± 0.05 | 119±10 | 5.9 | 2.34 ± 0.18 | 13.9 | 9.11 ± 0.08 |
| Oph 6 | 6.0 ± 0.2 | 18.1 ± 1.6 | 10.3 ± 0.2 | 27.7 ± 1.3 | 10.3 | 0.50 ± 0.04 | 13.8 | 5.81 ± 0.04 |
| Oph D | 5.6 ± 0.3 | 8.1 ± 1.6 | 9.9 ± 0.3 | 12.8 ± 0.8 | 9.9 | 0.69 ± 0.05 | 13.3 | 1.67 ± 0.03 |
| CrA 038 | 8.3 ± 0.3 | 8.0 ± 0.5 | 11.6 ± 0.3 | 11.1 ± 0.5 | 11.6 | 0.65 ± 0.03 | 13.7 | 7.10 ± 0.12 |
| CrA 040 | 9.6 ± 0.2 | 21.2 ± 0.7 | 13.7 ± 0.4 | 14.5 ± 0.5 | 13.7 | 0.126 ± 0.014 | 15.5 | 6.42 ± 0.04 |
| CrA 047 | 14.5 ± 0.3 | 24.3 ± 0.4 | 16.2 ± 0.6 | 9.0 ± 0.3 | 16.2 | <0.37 | 19.0 | 11.73 ± 0.11 |
| CrA 044 | 12.4 ± 0.2 | 20.9 ± 0.4 | 22.2 ± 0.8 | 7.28 ± 0.13 | 22.2 | <0.19 | 18.2 | 10.63 ± 0.09 |
| CrA 050 | 10.5 ± 0.4 | 7.6 ± 0.4 | 14.9 ± 1.1 | 2.8 ± 0.2 | 14.9 | <0.38 | 18.0 | 5.91 ± 0.08 |
| CrA 151 | 6.4 ± 0.4 | 5.7 ± 0.8 | 12.5 ± 0.3 | 9.8 ± 0.4 | 12.5 | 0.52 ± 0.06 | 11.2 | 2.47 ± 0.04 |
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