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Table 2
Unblended or slightly blended transitions of the trans and gauche conformers of EF detected towards the W51 e2 hot molecular core.
| Frequency | Transition | Eup | ∫ TmbΔv |
| (GHz) | (K) | (K km s-1)a | |
|
|
|||
| Trans conformer | |||
|
|
|||
| 93.3247 | 17(7, 11)−16(7, 10) | 76 | 0.13±0.03 |
| 93.3247 | 17(7, 10)−16(7, 9) | 76 | 0.13±0.03 |
| 93.356781 | 17(6, 12)−16(6, 11) | 66 | 0.16±0.04 |
| 93.356798 | 17(6, 11)−16(6, 10) | 66 | 0.16±0.04 |
| 93.41211 | 17(5, 13)−16(5, 12) | 58 | 0.18±0.04 |
| 93.413115 | 17(5, 12)−16(5, 11) | 58 | 0.18±0.04 |
| 94.608041 | 17(1, 16)−16(1, 15) | 42 | 0.26±0.06 |
| 95.313367 | 18(0, 18)−17(0, 17) | 44 | 0.27±0.06 |
| 95.517215 | 17(2, 15)−16(2, 14) | 44 | 0.25±0.06 |
| 101.213864 | 18(2, 16)−17(2, 15) | 49 | 0.30±0.07 |
| 104.49469 | 19(3, 17)−18(3, 16) | 57 | 0.31±0.07 |
| 105.23465 | 20(1, 20)−19(1, 19) | 54 | 0.35±0.08 |
| 105.27195 | 19(1, 18)−18(1, 17) | 52 | 0.34±0.08 |
| 105.44706 | 19(3, 16)−18(3, 15) | 57 | 0.32±0.07 |
| 106.89024 | 19(2, 17)−18(2, 16) | 54 | 0.35±0.08 |
| 108.55223 | 20(2, 19)−19(2, 18) | 58 | 0.37±0.08 |
| 109.976377 | 20(5, 15)−19(5, 14) | 73 | 0.30±0.06 |
| 109.982644 | 20(3, 18)−19(3, 17) | 62 | 0.36±0.08 |
| 110.103357 | 20(4, 17)−19(4, 16) | 67 | 0.33±0.07 |
| 110.417497 | 21(1, 21)−20(1, 20) | 59 | 0.40±0.08 |
| 110.544519 | 20(1, 19)−19(1, 18) | 57 | 0.39±0.08 |
| 136.272898 | 26(1, 26)−25(1, 25) | 90 | 0.6±0.1 |
| 136.36963 | 26(0, 26)−25(0, 25) | 89 | 0.6±0.1 |
| 137.275291 | 25(3, 23)−24(3, 22) | 92 | 0.6±0.1 |
| 137.48096 | 25(6, 20)−24(6, 19) | 112 | 0.45±0.07 |
| 137.482273 | 25(6, 19)−24(6, 18) | 112 | 0.47±0.07 |
| 137.805525 | 25(4, 22)−24(4, 21) | 97 | 0.56±0.09 |
| 138.27859 | 25(4, 21)−24(4, 20) | 97 | 0.56±0.09 |
| 141.50245 | 26(1, 25)−25(1, 24) | 94 | 0.7±0.1 |
| 151.20362 | 27(2, 25)−26(2, 24) | 104 | 0.7±0.1 |
| 151.80493 | 29(0, 29)−28(0, 28) | 111 | 0.7±0.1 |
| 153.70219 | 28(11, 17)−27(11, 16) | 194 | 0.22±0.03 |
| 153.70219 | 28(11, 18)−27(11, 17) | 194 | 0.22±0.03 |
| 153.83787 | 28(8, 20)−27(8, 19) | 153 | 0.40±0.05 |
| 153.83787 | 28(8, 21)−27(8, 20) | 153 | 0.40±0.05 |
| 153.931996 | 28(7, 22)−27(7, 21) | 142 | 0.47±0.06 |
| 153.932149 | 28(7, 21)−27(7, 20) | 142 | 0.47±0.06 |
| 154.08046 | 28(6, 23)−27(6, 22) | 133 | 0.54±0.07 |
| 154.08500 | 28(6, 22)−27(6, 21) | 133 | 0.54±0.07 |
| 154.39306 | 28(5, 23)−27(5, 22) | 125 | 0.61±0.09 |
| 155.37695 | 28(4, 24)−27(4, 23) | 119 | 0.7±0.1 |
| 156.91332 | 30(1, 30)−29(1, 29) | 118 | 0.8±0.1 |
|
|
|||
| Gauche conformer | |||
|
|
|||
| 141.56623 | 20(4, 17)−19(4, 16) | 173 | 0.11±0.02 |
| 156.01357 | 22(10, 13)−21(10, 12) | 213 | 0.08±0.01 |
| 156.01358 | 22(10, 12)−21(10, 11) | 213 | 0.08±0.01 |
| 157.37580 | 22(3, 19)−21(3, 18) | 187 | 0.14±0.02 |
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