Table 2
Transitions of (CH2OH)2 observed toward W51/e2 and G34.3+0.2 with the IRAM 30–m telescope.
| Transition | Freq. | E up | log 10Aul |
|
V LSR | Δv | Peak Tmb |
|
[MHz] | [K] | [s-1 ] | [K km s-1 ] | [km s-1 ] | [km s-1] | [K] |
|
|
|||||||
| W51/e2 | |||||||
|
|
|||||||
| 91,8v = 1−81,7v = 0 | 100 333.64 | 24 | –4.6773 | 0.2 | 55.1 | 5.5 | 0.03 |
| 2410,15 / 14v = 0−2310,14 / 13v = 1 | 239 883.56 | 197 | –3.2555 | 2.7 | 55.6 | 6.8 | 0.38 |
| 248,17v = 0−238,16v = 1 | 240 807.88 | 179 | –3.5201 | 2.0 | 56.7 | 5.9 | 0.32 |
| 2310,14 / 13v = 1−2210,13 / 12v = 0 | 242 656.23 | 185 | –3.5496 | 4.0 | 56.9 | 7.4 | 0.50 |
| 239,15 / 14v = 1−229,14 / 13v = 0 | 242 948.29 | 176 | –3.5292 | 1.4 | 56.5 | 5.0 | 0.27 |
|
|
|||||||
| G34.3+0.2 | |||||||
|
|
|||||||
| 248,17v = 0−238,16v = 1 | 240 807.88 | 179 | –3.5201 | 1.0 | 57.7 | 4.1 | 0.23 |
| 2310,14 / 13v = 1−2210,13 / 12v = 0 | 242 656.23 | 185 | –3.5496 | 1.0 | 58.4 | 5.0 | 0.19 |
Notes. The table lists spectroscopic parameters and observed quantities from Gaussian fits to the detected (CH2OH)2 lines: integrated line intensity (
), line position (VLSR), line width (Δv) and peak temperature (Peak Tmb). The error of is estimated to ~30% as determined by the observational uncertainty, while the errors on VLSR and Δv are ~1.0 s-1 and ~2.0 km s-1, respectively. The line intensities have been added together for the hyper fine structure transitions (denoted by / in the quantum numbers).
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