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Table 1
Molecular lines probed.
| Molecule | Transition | νrest | Eup | Sijμ2 |
|---|---|---|---|---|
| (GHz) | (K) | (D2) | ||
| Band 5 – DG Tau | ||||
| Cycle 5, 2017.1.01562.S | ||||
| SO2 | 22,0−11,1 | 192.65102 | 13 | 3.9 |
| SO2 | 91,9−80,8 | 193.60949 | 42 | 15.9 |
| SO2 | 120,12−111,11 | 203.39155 | 70 | 22.5 |
| SO2 | 183,15−182,16 | 204.24676 | 181 | 34.6 |
| SO2 | 74,4−83,5 | 204.38430 | 65 | 1.7 |
| SO | 45−34 | 206.17601 | 39 | 8.9 |
| Band 6 – DG Tau, HL Tau, IRAS 04302, T Tau | ||||
| Cycle 4 and 6, 2016.1.00846.S and 2018.1.01037.S | ||||
| SO2 | 115,7−124,8 | 229.34763 | 122 | 3.1 |
| SO2 | 52,4−41,3 | 241.61579 | 24 | 5.7 |
| SO2 | 54,2−63,3 | 243.08764 | 53 | 0.7 |
| SO2 | 140,14−131,13 | 244.25421 | 93 | 28.0 |
| 34SO2 | 42,2−31,3 | 229.85761 | 19 | 4.6 |
| CO | 2−1 | 230.53800 | 17 | 0.02 |
| o-H2CO | 31,2−21,1 | 225.69777 | 33 | 43.5 |
| CS | 5−4 | 244.93555 | 35 | 19.1 |
| HCO+ | 3−2 | 267.55763 | 26 | 45.6 |
| Band 7 – HL Tau | ||||
| Cycle 5, 2017.1.01562.S | ||||
| SO2 | 33,1−22,0 | 313.27972 | 28 | 6.7 |
| Band 9 – HL Tau | ||||
| Cycle 5, 2017.1.01562.S | ||||
| SO | 1415−1314 | 644.37892 | 254 | 32.9 |
| SO | 1515−1414 | 645.25493 | 261 | 35.2 |
| SO | 1615−1514 | 645.87592 | 253 | 37.6 |
Notes. Columns are: molecular species, transition, frequency at rest frame, upper-level energy, and line strength. All parameters are from CDMS (Müller et al. 2005). The HCO+ data are from Yen et al. (2019).
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