Table 1
Overview of the main properties of the observed water lines with HIFI.
| Mol. | Trans. | Eu/kB | Frequency | Tel./Inst.-band | ηMBa | θa | Spec. Resol. | Correction |
| (K) | (GHz) | (″) | (km s-1) | factorb | ||||
|
|
||||||||
| p-H2O | 202–111 | 100.8 | 987.927 | HIFI-4a | 0.74 | 21.5 | 0.15 | 0.865 |
| p-H2O | 211–202 | 136.9 | 752.033 | HIFI-2b | 0.75 | 28.2 | 0.20 | 0.853 |
| o-H2O | 312–303 | 249.4 | 1097.365 | HIFI-4b | 0.74 | 19.3 | 0.14 | 0.865 |
Notes.
Parameters calculated using Eqs. (1) and (3) of Roelfsema et al. (2012), respectively.
Beam efficiency correction factors of each excited water lines according to the updated values of ηMB for the different HIFI-bands1.
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