Table 2.
Strong lines detected in the high-resolution spectra.
| Frequency | Species | Transition | Int. intensity |
|---|---|---|---|
| (MHz) | (Quantum nr.) | (K [T ] km s−1) |
|
| 85338.89 | c-C3H2 | 2(1,2)-1(0,1) | 5.28 ± 0.01 |
| 86054.96 | HC15N | 1-0 | 2.39 ± 0.01 |
| 86093.95 | SO | 2(2)-1(1) | 4.36 ± 0.01 |
| 86340.18m | H13CN | 1(2)-0(1) | 1.87 ± 0.01 |
| 86670.76 | HCO | 1(0,1,2,2)-0(0,0,1,1) | 2.88 ± 0.01 |
| 86677.46 | HCO | 1(0,1,1,1)-0(0,0,1,1) | 1.37 ± 0.01 |
| 86708.36 | HCO | 1(0,1,2,1)-0(0,0,1,1) | 1.29 ± 0.01 |
| 88633.94m | HCN | 1(0)-0(1) | 10.73 ± 0.06 |
| 89487.41 | HCO+ | 1-0 | 7.02 ± 0.04 |
| 90663.59 | HNC | 1-0 | 12.15 ± 0.02 |
| 92494.31 | 13CS | 2-1 | 2.29 ± 0.01 |
| 93173.70 | N2H+ | 1-0 | 1.93 ± 0.01 |
| 93870.11 | CCS | 7(8)-6(7) | 0.661 ± 0.004 |
| 96412.94 | C34S | 2-1 | 3.63 ± 0.01 |
| 97171.84 | C33S | 2-1 | 0.759 ± 0.002 |
| 97980.95 | CSa | 2-1 | 24.32 ± 0.01 |
| 218222.19 | H2CO | 3(0,3)-2(0,2) | 0.80 ± 0.01 |
| 219560.36 | C18O | 2-1 | 6.4 ± 0.1 |
| 220398.68 | 13CO | 2-1 | 26.8 ± 0.4 |
| 226875.90 | CN | v = 0,1; 2(0,3,2)-1(0,2,1) | 8.54 ± 0.03 |
| 230538.00 | CO | 2-1 | 117 ± 1 |
| 216112.58 | DCO+ | 3-2 | 2.31 ± 0.02 |
| 231321.67m | N2D+ | 3-2 | 2.78 ± 0.01 |
| 215220.65 | SO | 5(5)-4(4) | 2.06 ± 0.03 |
Notes. We list here only the lines whose S/N is high enough to analyze their velocity in detail. The listed intensities correspond to the average, velocity-integrated T 
intensity over the whole region. Multiplets are labeled with m and only the central line is listed, while the integrated intensity of multiplets includes all hyperfine structure components. (a) The CS line was only observed in the low-resolution mode, but given its importance and because it is included in the spatial and velocity analysis, we also list it here. All the wavelengths and quantum numbers are taken from the JPL database (Pickett et al. 1998).
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