Open Access
Table A.1
Parameters of the 6.7 GHz methanol maser cloudlets with Gaussian velocity profiles in five epochs in 2019.
| No. of cloudlet Epoch | Vp (km s−1) | Vfit (km s−1) | FWHM (km s−1) | Sfit (Jy beam−1) | rs | rv | ΔRA×ΔDec (mas×mas) | Vgrad (km s−1 mas−1) | PA (°) |
|---|---|---|---|---|---|---|---|---|---|
| Cloudlet 1 | |||||||||
| DOY: 270 (VLBA) | 119.84 | 119.85 | 0.17 | 0.2 | 1.00 | 1.00 | 2.2 × 0.8 | 0.15 | −69 |
| DOY: 271 (LBA) | 119.86 | 119.89 | 0.12 | 1.0 | – | – | 2.9 × 1.6 | – | – |
| DOY: 280 (EVN) | 119.83 | 119.87 | 0.16 | 1.1 | 0.76 | 1.00 | 2.8 × 3.3 | 0.13 | −53 |
| DOY: 300 (VLBA) | 119.76 | 119.82 | 0.16 | 0.5 | 0.77 | 1.00 | 2.7 × 2.1 | 0.15 | −60 |
| DOY: 336 (VLBA) | 119.98 | 119.90 | 0.18 | 0.3 | 0.99 | 1.00 | 3.9 × 1.2 | 0.13 | −66 |
| Cloudlet 2 | |||||||||
| DOY: 270 | 116.68 | – | – | – | – | – | – | – | – |
| DOY: 271 | 116.61 | 116.64 | 0.14 | 0.3 | 0.83 | 0.89 | 2.1 × 2.0 | 0.07 | +54 |
| DOY: 280 | 116.58 | 116.61 | 0.17 | 0.4 | 0.86 | 0.95 | 3.2 × 1.7 | 0.12 | −65 |
| DOY: 300 | 116.60 | 116.56 | 0.17 | 0.2 | – | – | 1.9 × 0.5 | – | – |
| DOY: 336 | 116.64 | – | – | – | – | – | – | – | – |
| Cloudlet 3 | |||||||||
| DOY: 270 | 115.27 | 115.33 | 0.17 | 2.5 | – | – | 1.2 × 3.3 | – | – |
| DOY: 271 | 115.38 | 115.37 | 0.17 | 12.6 | – | – | 4.6 × 7.7 | – | – |
| DOY: 280 | 115.35 | 115.34 | 0.20 | 12.1 | – | – | 4.0 × 6.7 | – | – |
| DOY: 300 | 115.37 | 115.29 | 0.21 | 6.1 | – | – | 2.7 × 5.0 | – | – |
| DOY: 336 | 115.41 | 115.37 | 0.20 | 2.6 | – | – | 2.0 × 5.7 | – | – |
| Cloudlet 4 | |||||||||
| DOY: 270 | 115.10 | 115.02 | 0.20 | 0.3 | 0.93 | 0.98 | 1.7 × 1.6 | 0.26 | −53 |
| DOY: 271 | 115.03 | 115.04 | 0.15 | 1.0 | 0.99 | 0.91 | 3.4 × 2.0 | 0.12 | −67 |
| DOY: 280 | 115.00 | 115.02 | 0.17 | 1.6 | 0.52 | 1.00 | 2.1 × 0.5 | 0.25 | −69 |
| DOY: 300 | 115.02 | 114.97 | 0.17 | 0.6 | 0.60 | 1.00 | 1.5 × 0.2 | 0.20 | −85 |
| DOY: 336 | 115.06 | 115.04 | 0.15 | 0.3 | – | – | 0.2 × 0.9 | – | – |
| Cloudlet 5 | |||||||||
| DOY: 270 | 113.51 | – | – | – | – | – | – | – | – |
| DOY: 271 | 113.50 | 113.52 | 0.11 | 0.3 | – | – | 0.7 × 1.3 | – | – |
| DOY: 280 | 113.51 | 113.46 | 0.20 | 1.1 | – | – | 1.8 × 4.7 | - | – |
| DOY: 300 | 113.44 | 113.43 | 0.19 | 0.5 | 0.98 | 0.90 | 0.3 × 4.9 | 0.07 | −3 |
| DOY: 336 | 113.48 | 113.55 | 0.18 | 0.2 | – | – | 0.3 × 5.0 | – | - |
| Cloudlet 6 | |||||||||
| DOY: 270 | 113.69 | 113.76 | 0.30 | 0.3 | 1.00 | 0.98 | 3.7 × 2.0 | 0.17 | −62 |
| DOY: 271 | 113.76 | 114.17 | 0.12 | 0.5 | 0.93 | 0.97 | 5.7 × 2.0 | 0.14 | −70 |
| 113.76 | 0.15 | 1.7 | |||||||
| DOY: 280 | 113.77 | 114.14 | 0.14 | 0.7 | 0.99 | 0.98 | 3.6 × 2.2 | 0.17 | −60 |
| 113.73 | 0.16 | 2.1 | |||||||
| DOY: 300 | 113.61 | 114.11 | 0.15 | 0.3 | 0.92 | 0.97 | 4.1 × 2.9 | 0.18 | −59 |
| 113.69 | 0.16 | 1.0 | |||||||
| DOY: 336 | 113.66 | 113.66 | 0.33 | 0.6 | 0.94 | 0.98 | 7.8 × 5.0 | 0.13 | −58 |
| Cloudlet 7 | |||||||||
| DOY: 270 | 113.69 | – | – | – | – | – | – | – | – |
| DOY: 271 | 113.67 | 113.64 | 0.12 | 0.6 | 0.97 | 0.96 | 2.3 × 0.7 | 0.09 | −72 |
| DOY: 280 | 113.60 | 113.61 | 0.17 | 1.3 | 0.98 | 0.97 | 1.8 × 1.6 | 0.11 | −48 |
| DOY: 300 | 113.61 | 113.58 | 0.15 | 0.8 | 0.99 | 1.00 | 1.4 × 1.7 | 0.18 | −41 |
| DOY: 336 | 113.66 | 113.65 | 0.18 | 0.4 | – | – | 0.6 × 1.4 | – | – |
| Cloudlet 8 | |||||||||
| DOY: 270 | 113.34 | – | – | – | – | – | – | – | – |
| DOY: 271 | 113.50 | 113.48 | 0.15 | 1.7 | 0.72 | 0.61 | 6.2 × 1.7 | 0.10 | −77 |
| DOY: 280 | 113.42 | 113.44 | 0.16 | 2.0 | 0.99 | 0.98 | 10.0 × 1.6 | 0.04 | −81 |
| DOY: 300 | 113.44 | 113.38 | 0.14 | 1.3 | 0.99 | 1.00 | 3.0 × 1.5 | 0.16 | −64 |
| DOY: 336 | 113.48 | 113.45 | 0.15 | 1.0 | 0.95 | 1.00 | 2.7 × 0.6 | 0.13 | −78 |
| Cloudlet 9 | |||||||||
| DOY: 270 | 112.81 | – | – | – | 0.71 | 0.90 | 2.3 × 1.8 | 0.12 | +64 |
| DOY: 271 | 112.88 | 113.21 | 0.14 | 0.2 | 0.84 | 0.84 | 4.1 × 3.3 | 0.11 | +50 |
| 112.87 | 0.12 | 1.1 | |||||||
| DOY: 280 | 112.81 | 113.25 | 0.16 | 0.5 | 0.93 | 0.94 | 4.0 × 3.4 | 0.15 | +49 |
| 112.84 | 0.14 | 1.3 | |||||||
| DOY: 300 | 112.73 | 113.23 | 0.20 | 0.3 | 0.89 | 0.93 | 3.8 × 3.0 | 0.18 | +56 |
| 112.79 | 0.14 | 0.6 | |||||||
| DOY: 336 | 112.78 | 112.87 | 0.20 | 0.4 | 0.94 | 0.95 | 3.8 × 4.1 | 0.11 | +54 |
| Cloudlet 10 | |||||||||
| DOY: 270 | 111.93 | 111.89 | 0.21 | 0.3 | 0.99 | 0.99 | 0.2 × 1.6 | 0.89 | +11 |
| 111.24 | 0.21 | 0.2 | 0.55 | 1.00 | 0.5 × 0.4 | 0.58 | −64 | ||
| DOY: 271 | 111.87 | 111.93 | 0.19 | 0.9 | – | – | 1.8 × 3.3 | – | – |
| 111.28 | 0.17 | 0.5 | – | – | 1.1 × 1.2 | – | – | ||
| DOY: 280 | 111.93 | 111.91 | 0.21 | 1.0 | 0.68 | 0.95 | 0.2 × 1.6 | 0.33 | −6 |
| 111.26 | 0.19 | 0.8 | 0.73 | 0.95 | 1.4 × 4.3 | 0.33 | −42 | ||
| DOY: 300 | 111.85 | 111.87 | 0.22 | 0.4 | 0.76 | 0.99 | 0.5 × 1.5 | 0.51 | +30 |
| 111.22 | 0.18 | 0.4 | 1.00 | 0.95 | 0.9 × 1.8 | 0.25 | −27 | ||
| DOY: 336 | 111.37 | 111.95 | 0.22 | 0.3 | – | – | 0.4 × 1.5 | – | – |
| 111.30 | 0.21 | 0.4 | 0.62 | 0.71 | 0.9 × 2.7 | 0.19 | −26 | ||
| Cloudlet 11 | |||||||||
| DOY: 270 | 110.18 | – | – | – | – | – | – | – | – |
| DOY: 271 | 110.20 | 110.21 | 0.05 | 0.3 | 0.71 | 0.94 | 1.0 × 0.8 | 0.07 | −61 |
| DOY: 280 | 110.17 | 110.19 | 0.15 | 0.3 | – | – | 0.2 × 0.4 | – | – |
| DOY: 300 | – | – | – | – | – | – | – | – | – |
| DOY: 336 | – | – | – | – | – | – | – | – | – |
| Cloudlet 12 | |||||||||
| DOY: 270 | 110.18 | 110.14 | 0.23 | 0.1 | 0.99 | 0.87 | 2.6 × 9.6 | 0.07 | +16 |
| DOY: 271 | 110.16 | 110.50 | 0.07 | 0.3 | 0.99 | 0.90 | 3.9 × 12.0 | 0.06 | +17 |
| 110.15 | 0.18 | 1.9 | |||||||
| DOY: 280 | 110.17 | 110.18 | 0.25 | 2.5 | 0.98 | 0.93 | 2.8 × 10.3 | 0.09 | +15 |
| 109.17 | 0.15 | 0.2 | – | – | 0.3 × 1.4 | – | – | ||
| DOY: 300 | 110.10 | 110.11 | 0.22 | 0.9 | 0.99 | 0.78 | 1.5 × 7.0 | 0.10 | +12 |
| DOY: 336 | 110.14 | 110.19 | 0.23 | 0.4 | 0.98 | 0.96 | 2.2 × 7.3 | 0.07 | +14 |
| Cloudlet 13 | |||||||||
| DOY: 270 | 109.48 | 109.45 | 0.42 | 0.2 | 0.69 | 0.91 | 0.2 × 2.5 | 0.20 | +9 |
| DOY: 271 | 109.63 | 109.56 | 0.30 | 0.5 | – | – | 2.7 × 2.9 | – | – |
| 109.41 | 0.10 | 0.2 | |||||||
| DOY: 280 | 109.56 | 109.52 | 0.32 | 0.6 | 0.75 | 0.98 | 2.7 × 2.9 | 0.24 | +50 |
| DOY: 300 | 109.57 | 109.51 | 0.32 | 0.2 | 0.91 | 0.94 | 0.9 × 1.4 | 0.30 | +36 |
| DOY: 336 | – | – | – | – | – | – | – | – | – |
| Cloudlet 14 | |||||||||
| DOY: 270 | 108.25 | – | – | – | – | – | – | – | – |
| DOY: 271 | 108.22 | 108.25 | 0.11 | 0.6 | 0.74 | 0.86 | 2.0 × 0.7 | 0.21 | −65 |
| DOY: 280 | 108.24 | 108.22 | 0.14 | 0.6 | 0.68 | 0.86 | 0.2 × 0.6 | 0.53 | −27 |
| DOY: 300 | 108.17 | 108.19 | 0.14 | 0.2 | – | – | 0.3 × 0.7 | – | – |
| DOY: 336 | – | – | – | – | – | – | – | – | – |
| Cloudlet 15 | |||||||||
| DOY: 270 | 107.54 | – | – | – | – | – | – | – | – |
| DOY: 271 | 107.61 | 107.61 | 0.15 | 0.2 | – | – | 1.3 × 0.7 | – | – |
| DOY: 280 | 108.33 | 108.35 | 0.14 | 0.2 | 0.96 | 0.97 | 0.2 × 1.0 | 0.18 | +14 |
| DOY: 300 | 107.64 | – | – | – | – | – | – | – | – |
| DOY: 336 | – | – | – | – | – | – | – | – | – |
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