Table A.3.
Parameters of all the 22 GHz H2O maser features detected around VLA1 (epoch 2016.45).
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) | (14) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maser | RAa | Deca | Zone | Peak | Vlsr | ΔvL | Pl | χ | ΔVib | TbΔΩb | PV | B|| | θc |
| feature | offset | offset | Intensity (I) | ||||||||||
| (mas) | (mas) | (Jy/beam) | (km/s) | (km/s) | (%) | (°) | (km/s) | (log K sr) | (%) | (mG) | (°) | ||
| VLA1.2.01 | -18.441 | 1.366 | - | 57.07 ± 1.42 | 12.29 | 0.66 | 2.2 ± 0.2 | −72 ± 10 |
 |
 |
3.5 | −676 ± 102 |
 |
| VLA1.2.02 | -11.915 | -9.304 | - | 0.29 ± 0.02 | 16.40 | 0.76 | − | − | − | − | − | − | − |
| VLA1.2.03 | -9.052 | -3.773 | - | 659.23 ± 2.17 | 9.48 | 0.66 | 0.7 ± 0.1 | −73 ± 4 |
 |
 |
− | − | − |
| VLA1.2.04 | -4.210 | 0.237 | - | 13.25 ± 0.42 | 7.82 | 1.99 | − | − | − | − | − | − | − |
| VLA1.2.05 | -3.873 | 0.980 | - | 47.27 ± 0.64 | 8.98 | 0.75 | 1.3 ± 0.1 | −76 ± 15 |
 |
 |
− | − |
 |
| VLA1.2.06 | -1.810 | 18.555 | - | 134.08 ± 1.61 | 10.14 | 0.70 | − | − | − | − | − | − | − |
| VLA1.2.07 | 0 | 0 | - | 1619.87 ± 4.42 | 10.92 | 1.19 | 0.8 ± 0.1 | −59 ± 3 | − | − | − | − | − |
| VLA1.2.08 | 11.452 | 12.955 | - | 25.57 ± 0.86 | 9.27 | 1.14 | − | − | − | − | − | − | − |
| VLA1.2.09 | 26.945 | 32.818 | - | 330.99 ± 2.28 | 10.35 | 0.58 | − | − | − | − | − | − | − |
| VLA1.2.10 | 33.892 | 21.893 | - | 24.05 ± 0.72 | 13.43 | 3.68 | − | − | − | − | − | − | − |
| VLA1.2.11 | 35.366 | 44.006 | - | 10.46 ± 0.23 | 9.00 | 1.21 | − | − | − | − | − | − | − |
| VLA1.2.12 | 36.124 | 22.461 | - | 35.42 ± 1.19 | 9.29 | 0.81 | − | − | − | − | − | − | − |
| VLA1.2.13 | 37.723 | 21.629 | - | 412.53 ± 1.48 | 12.69 | 1.10 | 1.0 ± 0.1 | −65 ± 16 | − | − | − | − | − |
| VLA1.2.14 | 38.144 | 21.221 | - | 98.05 ± 4.33 | 10.82 | 1.31 | 1.2 ± 0.4 | −11 ± 14 | − | − | − | − | − |
| VLA1.2.15 | 41.765 | 25.604 | - | 28.31 ± 0.73 | 13.40 | 0.80 | − | − | − | − | − | − | − |
| VLA1.2.16 | 42.691 | 0.790 | - | 0.24 ± 0.02 | 2.68 | 0.49 | − | − | − | − | − | − | − |
| VLA1.2.17 | 47.112 | 24.559 | - | 150.64 ± 0.68 | 13.51 | 1.05 | 2.1 ± 0.5 | −56 ± 3 | − | − | − | − | − |
| VLA1.2.18 | 48.923 | 25.745 | - | 35.99 ± 0.84 | 13.56 | 0.91 | − | − | − | − | − | − | − |
| VLA1.2.19 | 49.301 | 24.933 | - | 4.04 ± 0.64 | 15.72 | 1.05 | − | − | − | − | − | − | − |
| VLA1.2.20 | 155.146 | 73.784 | - | 3.72 ± 0.21 | 13.64 | 1.09 | − | − | − | − | − | − | − |
Notes.
The reference position is α2000 = 20h38m36s.43403 ± 0s.00011 and δ2000 = +42° 37′34″.8667 ± 0″.0010.
The best-fitting results obtained by using a model based on the radiative transfer theory of H2O masers for Γ + Γν = 1 s−1 S11a. The errors were determined by analyzing the full probability distribution function. For T ∼ 3136 K (Γν = 17 s−1) TbΔΩ has to be adjusted by adding +1.3 log K sr (Anderson & Watson 1993).
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