Table A.1
Identified molecular transitions in the SMA dataset.
| Species | Transition | Frequency(a) [GHz] |  |
 |
|---|---|---|---|---|
| CO-species | ||||
12CO |
2−1 |
230.538 |
6.92 × 10−7 |
17 |
| C18O | 2−1 | 219.560 | 6.01 × 10−7 | 16 |
| 13CO | 2−1 | 220.398 | 6.04 × 10−7 | 16 |
| H2CO | 30,3 − 20,2 | 218.222 | 2.82 × 10−4 | 21 |
| H2CO | 32,2 − 22,1 | 218.476 | 1.58 × 10−4 | 68 |
| H2CO | 32,1 − 22,0 | 218.760 | 1.58 × 10−4 | 68 |
| CH3OH | 42 − 31,E | 218.440 | 4.68 × 10−5 | 46 |
| CH3OHb | 5+0 − 4+0 E | 241.700 | 6.04 × 10−5 | 47.9 |
| CH3OHb | 5−1 − 4−1 E | 241.767 | 5.81 × 10−5 | 40.4 |
| CH3OHb | 50 − 40 A+ | 241.791 | 6.05 × 10−5 | 34.8 |
| CH3OHb | 5+1 − 4+1 E | 241.879 | 5.96 × 10−5 | 55.9 |
| CH3OHb | 5−2 − 4−2 E | 241.904 | 5.09 × 10−5 | 60.7 |
S-species |
||||
SO |
55 − 44 |
215.220 |
1.20 × 10−4 |
44 |
| SO | 65 − 54 | 219.949 | 1.35 × 10−4 | 35 |
| SO2 | 42,2 − 31,3 | 235.151 | 7.69 × 10−5 | 19 |
Carbon-chain species |
||||
c-C3H2 |
60,6 − 51,5 |
217.822 |
5.37 × 10−4 |
39 |
| c-C3H2 | 51,4 − 42,3 | 217.940 | 3.98 × 10−4 | 35 |
| HC3N | 24 − 23 | 218.324 | 8.32 × 10−4 | 131 |
Notes. (a) From the Cologne Database for Molecular Spectroscopy (CDMS; Müller et al. 2001, 2005; Endres et al. 2016) and the Jet Propulsion Laboratory catalogue (Pickett et al. 1998). The CH3OH transitions belonging to the CH3OH JK = 5K − 4K Q-branch are also detected in the APEX data.
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