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Table 1
Properties of the observed transitions at the IRAM 30m telescope.
| Species | Transitions | Frequency | ΔV | Elow | Eup | Vcenter | TC | FWHM |  or area |
rms | |
| (MHz) | (km s-1) | (K) | (K) | (km s-1) | K | (km s-1) | (km s-1) or (K km s-1) | (mK) | |||
|
|
|||||||||||
| DCO+ | 2–1 | 144 077.2890 | 0.10 | 3.46 | 10.37 | 69.58 ± 0.02 | 1.08 | 0.40 ± 0.05 | 0.17 ± 0.03 | 14.8 | |
| DCO+ | 3–2 | 216 112.5822 | 0.07 | 10.37 | 20.74 | 69.56 ± 0.03 | 2.58 | 0.36 ± 0.06 | 0.12 ± 0.02 | 89.8 | |
| H13CO+ | 1–0 | 86 754.2884 | 0.17 | 0.00 | 4.16 | 69.64 ± 0.10 | 0.93 | 0.34 ± 0.11 | 0.11 ± 0.02 | 20.0 | |
| DNC | 3–2 | 228 910.4810 | 0.07 | 11.00 | 21.97 | 69.52 ± 0.03 | 2.54 | 0.42 ± 0.06 | 0.09 ± 0.01 | 99.9 | |
| HN13C | 1–0 | 87 090.8252 | 0.17 | 0.00 | 4.18 | 69.70 ± 0.03 | 0.93 | 0.54 ± 0.07 | 0.010 ± 0.002 | 16.2 | |
| o-NH2D | 11,1–10,1 | 85 926.2780 | 0.17 | 16.56 | 20.68 | 68.91 ± 0.06 | 1.20 | 0.58 ± 0.15 | 0.020 ± 0.003a | 15.7 | |
| p-H2CO | 20,2–10,1 | 145 602.9490 | 0.10 | 3.50 | 10.48 | 69.38 ± 0.02 | 1.08 | 0.93 ± 0.04 | 0.50 ± 0.08 | 24.9 | |
| p-H2CO | 30,3–20,2 | 218 222.1920 | 0.07 | 10.48 | 20.96 | 69.39 ± 0.03 | 2.42 | 0.78 ± 0.06 | 0.39 ± 0.06 | 78.4 | |
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