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Table 3
Parameter of the best fit for a 2D Gaussian model to the map of the continuum and the maps of MF, AA and GA in Figs. 8 and 9, as well as the difference between the mean diameter of each map with the mean diameter of the mean map.
| ν0 | Eu | RA (J2000) | Dec (J2000) | θconv × θconv | PA |  |
|
|---|---|---|---|---|---|---|---|
| [GHz] | [K] | [18h 47m s] | [−01° 12′ ′′] | [′′ × ′′] | [°] | [′′] | |
| Continuum | 34.321 | 45.976 | 1.85 × 1.71 | 29 | |||
| CH3OCHO | 88.2207 | 205 | 34.316 | 46.0414 | 1.61 × 1.56 | 44 | –0.14 |
| 88.7707 | 208 | 34.316 | 46.030 | 1.63 × 1.60 | 27 | –0.11 | |
| 98.8153 | 215 | 34.320 | 45.949 | 1.65 × 1.59 | 75 | –0.10 | |
| 103.4787 | 25 | 34.318 | 46.069 | 1.84 × 1.81 | 60 | +0.10 | |
| 110.7765 | 216 | 34.318 | 46.053 | 1.60 × 1.58 | 63 | –0.13 | |
| 111.4084 | 37 | 34.318 | 46.087 | 1.81 × 1.79 | 68 | +0.08 | |
| 111.4533 | 37 | 34.317 | 46.094 | 1.83 × 1.82 | 83 | +0.11 | |
| 111.6822 | 28 | 34.317 | 46.101 | 1.82 × 1.81 | 65 | +0.10 | |
| Mean | – | 34.318 | 46.054 | 1.73 × 1.71 | 55 | ||
| CH3COOH | 85.319/.322 | 181/207 | 34.320 | 46.098 | 1.53 × 1.39 | 6 | +0.06 |
| 85.6331 | 229 | 34.320 | 46.078 | 1.48 × 1.31 | 8 | –0.00 | |
| 90.2462 | 20 | 34.313 | 46.107 | 1.46 × 1.43 | 19 | +0.05 | |
| 94.4995 | 58 | 34.311 | 46.018 | 1.37 × 1.35 | 109 | –0.03 | |
| 100.8554 | 26 | 34.314 | 46.017 | 1.43 × 1.36 | 58 | –0.00 | |
| 100.8975 | 25 | 34.314 | 46.028 | 1.45 × 1.37 | 50 | +0.01 | |
| 104.0780/.0786 | 80/266 | 34.317 | 46.049 | 1.33 × 1.31 | 92 | –0.07 | |
| 114.6380 | 75 | 34.313 | 46.068 | 1.39 × 1.35 | 179 | –0.02 | |
| Mean | – | 34.315 | 46.057 | 1.42 × 1.37 | 19 | ||
| CH2OHCHO | 88.5304 | 30 | 34.304 | 46.163 | 1.43 × 1.37 | 19 | -0.05 |
| 88.6912 | 49 | 34.306 | 46.124 | 1.52 × 1.46 | 167 | +0.04 | |
| 93.0485 | 192 | 34.310 | 46.054 | 1.44 × 1.36 | 45 | –0.05 | |
| 93.0527 | 23 | 34.309 | 46.066 | 1.50 × 1.45 | 42 | +0.03 | |
| 95.7562 | 178 | 34.305 | 46.103 | 1.44 × 1.37 | 73 | –0.04 | |
| 102.5729 | 64 | 34.314 | 46.049 | 1.51 × 1.44 | 79 | +0.03 | |
| 102.6144 | 104 | 34.310 | 46.098 | 1.41 × 1.35 | 77 | –0.07 | |
| 103.6680 | 32 | 34.310 | 46.100 | 1.56 × 1.51 | 71 | +0.09 | |
| Mean | – | 34.309 | 46.094 | 1.47 × 1.42 | 56 | ||
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