Table 1.
Summary of the molecular line observations.
| Center line | Resolution | Coverage | Int. time | τave | Tsys | Feff/Beff | rms_ave |
|---|---|---|---|---|---|---|---|
| (km s−1) | (MHz) | (min) | (K) | (mK) | |||
| 12CO(2–1) | 0.25 | 225060–232840 | 261 | 0.10 | 230 | 1.56 | 20–15–50 |
| 12CO(2–1) | 0.063 | 226398–228200, 229670–231497 | 105 | 0.18 | 230 | 1.56 | 50 |
| 13CO(2–1) | 0.20 | 214920–222700 | 209 | 0.10 | 170 | 1.53 | 10 |
| C18O(2–1)a | 0.067 | 215420–217240, 218700–220520 | 160 | 0.16 | 220 | 1.52 | 50 |
| C18O(2–1) | 0.20 | 214080–221860 | 313 | 0.09 | 220 | 1.52 | 10–20 |
| HCO+(1–0) | 0.66 | 83710–91490 | 261 | 0.03 | 120 | 1.18 | 6–20 |
| HCO+(1–0) | 0.16 | 85050–86870, 88330–90148 | 110 | 0.03 | 120 | 1.18 | 30 |
| N2H+(1–0) | 0.63 | 87680–97475 | 313 | 0.03 | 110 | 1.18 | 10 |
| N2H+(1–0) | 0.157 | 89033–90860, 92315–94133 | 157 | 0.03 | 110 | 1.18 | 10 |
| CS(2–1)b | 0.60 | 92500–100280 | 209 | 0.02 | 80 | 1.19 | 7 |
Notes. To maximize the S/N in the lines of the low-resolution spectra, we combined them with the high-resolution data. The rms listed is thus the rms of the combined spectrum. (a)The setup also covers the 13CO line. (b) Only low-resolution data. All observations were obtained on 2014 March 5–6. We include the average sky opacity (τave) during the observations, the average system temperature, the ratio between forward efficiency and beam efficiency (Feff /Beff; Kramer et al. 2013), and the average rms for each configuration.
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