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Table 1
List of H2O transitionsa observed with HIFI in L1157–B1.
| Transition | Frequency | λ | Eu/kB | HPBW | η mb | Obs_Id | rmsb | T peak | v peak | ∫Tmb dv |
| (GHz) | (μm) | (K) | (arcsec) | (mK) | (K) | (kms-1) | (K kms-1) | |||
|
|
||||||||||
| o-H2O 110−101 | 556.936 | 538.66 | 26.7 | 38.1 | 0.75 | 1 342 181 160 | 8 | 1.04(0.16) | −1.9(0.3) | 13.0(0.1) |
| 312 − 303 | 1097.365 | 273.38 | 215.1 | 19.3 | 0.74 | 1 342 196 453 | 26 | 0.29(0.04) | −2.0(0.3) | 4.1(0.2) |
| 312 − 221 | 1153.127 | 260.17 | 215.1 | 18.3 | 0.64 | 1 342 207 691 | 39 | 0.18(0.03) | −1.9(0.1) | 1.3(0.3) |
| 321 − 312 | 1162.912 | 257.98 | 271.0 | 18.3 | 0.64 | 1 342 207 691 | 36c | 0.11(0.03) | −1.7(0.4) | 0.5(0.2) |
| 221 − 212 | 1661.008 | 180.49 | 159.8 | 12.7 | 0.71 | 1 342 196 538 | 138 | 0.36(0.14) | −1.7(0.1) | 2.0(0.8) |
| 212 − 101 | 1669.905 | 179.52 | 80.1 | 12.7 | 0.71 | 1 342 207 689 | 56 | 0.94(0.14) | −5.5(0.3) | 12.7(0.4) |
| p-H2O 211 − 202 | 752.033 | 398.92 | 136.9 | 28.2 | 0.75 | 1 342 207 611 | 20 | 0.46(0.07) | −3.6(0.3) | 4.6(0.1) |
| 202 − 111 | 987.927 | 303.67 | 100.8 | 21.5 | 0.74 | 1 342 207 640 | 50 | 0.79(0.12) | −3.3(0.2) | 11.0(0.3) |
| 111 − 000 | 1113.343 | 269.47 | 53.4 | 19.1 | 0.74 | 1 342 207 388 | 56 | 0.79(0.12) | −4.1(0.1) | 11.1(0.4) |
Notes. Peak intensity (in Tmb scale), peak velocity, and integrated intensity between −40 and +2.6 kms-1 are reported. The uncertainties are indicated in parentheses.
(a)
Frequencies taken from the JPL spectroscopic catalog (Pickett et al. 1998).
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