Table 1
Parameters of the molecular lines employed in the analysis.
| Frequency | Molecule | Transition | Eu∕kB |
|---|---|---|---|
| (GHz) | (K) | ||
| 218.222 | H2CO | 30,3–20,2 | 21 |
| 218.325 | HC3N | 24–23 | 131 |
| 219.560 | C18O | 2–1 | 16 |
| 219.949 | SO | 65–54 | 35 |
| 220.178 | CH2CO | 111,11–101,10 | 76 |
| 220.399 | 13CO | 2–1 | 16 |
| 220.594 | CH3CN | 126–116 | 326 |
| 220.600 | CH3 13CN | 123–113 | 133 |
| 220.621 | CH3 13CN | 122–112 | 97 |
| 220.634 | CH3 13CN | 121–111 | 76 |
| 220.638 | CH3 13CN | 120–110 | 69 |
| 220.641 | CH3CN | 125–115 | 247 |
| 220.679 | CH3CN | 124–114 | 183 |
| 220.709 | CH3CN | 123–113 | 133 |
| 220.730 | CH3CN | 122–112 | 97 |
| 220.743 | CH3CN | 121–111 | 76 |
| 220.747 | CH3CN | 120–110 | 69 |
Notes. Column 1 reports the rest frequency of the transition; Col. 2 the molecular species; Col. 3 the quantum numbers; Col. 4 the upper state energy. The quantum numbers are given depending on the symmetry of the molecule:
Jupper− Jlower for linear,
for symmetric top, and 
for asymmetric top molecules.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.