Table 3
Selected lines of the two forms of vinyl alcohol (H2C=CHOH), syn (s) and anti (a) detected towards G+0.693.
| Frequency (MHz) | QNs  |
Eu (K) | log 1(300K) (nm2MHz) | rms (mK) | δv (kms−1) |  (Kkms−1) |
S/N | Blending |
|---|---|---|---|---|---|---|---|---|
| s-H2C=CHOH | ||||||||
| 37 459.19(*) | 21 ,2−11,1 | 5.09 | –6.3478 | 1.1 | 2.0 | 0.103(0.007)(c) | 14.7 | Clean transition(b) |
| 39 016.31(*) | 20,2−10,1 | 2.81 | –6.1842 | 1.2 | 1.9 | 0.193(0.007) | 25.9 | Clean transition(b) |
| 40 650.65(*) | 21 ,1−11,0 | 5.32 | –6.2770 | 1.3 | 1.9 | 0.109(0.008) | 13.8 | Clean transition(b) |
| 74 842.40(*) | 41,4−31,3 | 11.38 | –5.3566 | 3.2 | 2.4 | 0.244(0.022) | 10.9 | Slightly blended with t-HCOOH and HCCHO(b) |
| 86 557.56(*) | 21 ,2−10,1 | 5.09 | –5.3840 | 2.4 | 2.1 | 0.454(0.016) | 29.1 | Slightly blended with t-HCOOH and c-HCOOH(b) |
| 142 348.06(*) | 42,2−41,3 | 18.98 | –4.7860 | 3.4 | 1.7 | 0.199(0.020) | 10.0 | Blended with C2H5CN |
| 151 085.05(*) | 61,6−50,5 | 21.24 | –4.5207 | 4.1 | 1.6 | 0.261(0.023) | 11.2 | Slightly blended with C2H5CHO(b) |
| 154 490.28(*) | 32,2−31,3 | 15.20 | –4.9105 | 4.3 | 1.6 | 0.227(0.024) | 9.4 | Blended with C2H3CN |
| 161 794.81 | 52,4−51,5 | 23.63 | –4.6522 | 3.1 | 6.0 | 0.13(0.04) | 3.1 | Clean transition |
| a-H2C=CHOH | ||||||||
| 72 576.63 | 60,6−51,5 | 19.5 | –4.6023 | 2.0 | 5.0 | 0.096(0.021) | 4.7 | Clean transition |
| 77 015.59(*) | 71 ,6−70,7 | 29.6 | –4.2548 | 2.2 | 2.4 | 0.101(0.015) | 6.6 | Slightly blended with a-13CH3CH2OH(b) |
| 89 757.10(*) | 21 ,2−10,1 | 5.2 | –4.6954 | 2.1 | 2.0 | 0.167(0.013) | 12.6 | Clean transition(b) |
| 94 064.95 | 91,8−90,9 | 46.0 | –4.0615 | 1.7 | 1.9 | 0.043(0.011) | 4.0 | Clean transition |
| 106 949.48(*) | 31,3−20,2 | 7.9 | –4.4184 | 2.7 | 1.7 | 0.224(0.016) | 14.5 | Clean transition(b) |
| 139 916.89(*) | 90,9−81,8 | 41.5 | –3.8023 | 2.1 | 1.7 | 0.074(0.012) | 6.1 | Clean transition |
| 152 530.51 | 42,2−41,3 | 19.6 | –4.0754 | 1.9 | 6.4 | 0.162(0.022) | 7.5(d) | Clean transition(b) |
| 155 160.66 | 32,1−31,2 | 15.8 | –4.2142 | 2.1 | 6.4 | 0.149(0.024) | 6.3(d) | Blended with CH3CHO(b) |
| 232 655.55 | 42,3−31,2 | 19.5 | –3.7853 | 4.5 | 8.3 | 0.21(0.06) | 3.7 | Clean transition |
Notes. (a)The S/N are calculated from the integrated intensity of the lines inferred from the LTE fits of MADCUBA-SLIM. They are not calculated from the Gaussian fits of individual lines. (b)These transitions have been detected at the ≥3rms noise level in peak intensity. (c)The error in the integrated intensity is calculated as 
, with δv the velocity resolution of the spectra and Δv the FWHM of the line emission of 20 km s−1. (d)This S/N should be taken with caution since the LTE fit carried out by MADCUBA-SLIM overpredicts the integrated intensity of the line.(*)Transitions that provide the identification of the species with S/N ≥ 6 in integrated intensity.
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