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Table A.2
All 22 GHz H2O maser features detected around VLA 2 (epoch 2012.54).
| Maser | RAa | Deca | Peak flux | Vlsr | ΔvL | Pl | χ | ΔVi | TbΔΩ a | PV | B|| | θ |
| offset | offset | density(I) | ||||||||||
| (mas) | (mas) | (Jy/beam) | (km s-1) | (km s-1) | (%) | (°) | (km s-1) | (log K sr) | (%) | (mG) | (°) | |
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| VLA2.01 | 473.816 | –727.013 | 1.24 ± 0.05 | 16.309 | 0.54 | − | − | − | − | − | − | − |
| VLA2.02 | 474.784 | –730.545 | 0.48 ± 0.03 | 16.512 | 0.73 | − | − | − | − | − | − | − |
| VLA2.03 | 481.352 | –711.754 | 1.20 ± 0.03 | 16.498 | 0.79 | − | − | − | − | − | − | − |
| VLA2.04 | 485.984 | –710.171 | 0.22 ± 0.02 | 20.044 | 0.64 | − | − | − | − | − | − | − |
| VLA2.05 | 487.962 | –811.104 | 6.62 ± 0.04 | 14.233 | 0.43 | 1.6 ± 0.1 | −12 ± 4 | − | − | − | − | − |
| VLA2.06 | 491.709 | –813.095 | 0.57 ± 0.04 | 13.384 | 0.53 | − | − | − | − | − | − | − |
| VLA2.07 | 498.530 | –761.936 | 0.35 ± 0.03 | 11.982 | 0.73 | − | − | − | − | − | − | − |
| VLA2.08 | 519.370 | –737.568 | 0.97 ± 0.02 | 6.670 | 0.72 | − | − | − | − | − | − | − |
| VLA2.09 | 519.539 | –707.607 | 0.69 ± 0.02 | 18.898 | 0.79 | − | − | − | − | − | − | − |
| VLA2.10 | 519.749 | –708.904 | 3.24 ± 0.02 | 18.588 | 0.56 | − | − | − | − | − | − | − |
| VLA2.11 | 528.507 | –660.904 | 0.21 ± 0.02 | 2.369 | 0.55 | − | − | − | − | − | − | − |
| VLA2.12 | 529.643 | –659.538 | 0.22 ± 0.02 | 2.504 | 0.57 | − | − | − | − | − | − | − |
| VLA2.13 | 560.883 | –794.949 | 6.01 ± 0.03 | 11.645 | 0.53 | − | − | − | − | − | − | − |
| VLA2.14 | 572.629 | –591.267 | 0.84 ± 0.02 | 3.798 | 0.66 | − | − | − | − | − | − | − |
| VLA2.15 | 574.061 | –591.526 | 1.03 ± 0.02 | 4.648 | 0.57 | − | − | − | − | − | − | − |
| VLA2.16 | 574.945 | –801.651 | 3.76 ± 0.18 | 15.110 | 0.64 | − | − | − | − | − | − | − |
| VLA2.17 | 575.871 | –800.690 | 3.02 ± 0.12 | 15.420 | 1.05 | − | − | − | − | − | − | − |
| VLA2.18 | 576.250 | –800.716 | 2.16 ± 0.15 | 14.988 | 1.24 | − | − | − | − | − | − | − |
| VLA2.19 | 578.397 | –799.526 | 8.05 ± 0.05 | 14.409 | 0.62 | 1.1 ± 0.1 | −46 ± 5 | − | − | − | − | − |
| VLA2.20 | 578.945 | –594.635 | 0.32 ± 0.03 | 6.158 | 0.62 | − | − | − | − | − | − | − |
| VLA2.21 | 579.829 | –796.158 | 0.27 ± 0.03 | 17.334 | 1.10 | − | − | − | − | − | − | − |
| VLA2.22 | 580.039 | –594.902 | 0.29 ± 0.03 | 6.104 | 0.60 | − | − | − | − | − | − | − |
| VLA2.23 | 582.313 | –610.703 | 0.60 ± 0.02 | 7.776 | 0.54 | − | − | − | − | − | − | − |
| VLA2.24 | 583.197 | –602.474 | 1.14 ± 0.02 | 4.648 | 0.57 | − | − | − | − | − | − | − |
| VLA2.25 | 585.555 | –793.598 | 2.79 ± 0.13 | 14.867 | 1.10 | − | − | − | − | − | − | − |
| VLA2.26 | 586.481 | –793.186 | 1.75 ± 0.03 | 13.613 | 1.22 | − | − | − | − | − | − | − |
| VLA2.27 | 588.755 | –793.449 | 6.04 ± 0.15 | 15.298 | 0.84 | − | − | − | − | − | − | − |
| VLA2.28 | 594.817 | –599.632 | 1.52 ± 0.02 | 7.371 | 0.58 | − | − | − | − | − | − | − |
| VLA2.29 | 602.522 | –739.132 | 0.26 ± 0.02 | 22.039 | 0.89 | − | − | − | − | − | − | − |
| VLA2.30 | 604.205 | –740.036 | 2.84 ± 0.02 | 20.758 | 0.71 | − | − | − | − | − | − | − |
| VLA2.31 | 606.016 | –740.799 | 0.44 ± 0.02 | 18.696 | 1.20 | − | − | − | − | − | − | − |
| VLA2.32 | 607.153 | –741.844 | 0.71 ± 0.02 | 19.316 | 0.81 | − | − | − | − | − | − | − |
| VLA2.33 | 608.079 | –742.798 | 0.73 ± 0.02 | 19.248 | 1.35 | − | − | − | − | − | − | − |
| VLA2.34 | 608.416 | –743.553 | 0.91 ± 0.02 | 19.976 | 0.92 | − | − | − | − | − | − | − |
| VLA2.35 | 610.732 | –744.667 | 3.19 ± 0.02 | 18.494 | 0.75 | − | − | − | − | − | − | − |
| VLA2.36 | 613.847 | –744.747 | 0.48 ± 0.05 | 10.984 | 0.87 | − | − | − | − | − | − | − |
| VLA2.37 | 614.605 | –770.691 | 0.64 ± 0.04 | 13.249 | 0.72 | − | − | − | − | − | − | − |
| VLA2.38 | 614.647 | –772.896 | 0.35 ± 0.03 | 13.573 | 0.79 | − | − | − | − | − | − | − |
| VLA2.39 | 614.774 | –768.429 | 0.34 ± 0.04 | 12.535 | 0.90 | − | − | − | − | − | − | − |
| VLA2.40 | 652.539 | –747.784 | 0.24 ± 0.02 | –2.191 | 0.90 | − | − | − | − | − | − | − |
| VLA2.41 | 653.465 | –572.544 | 0.29 ± 0.02 | 7.506 | 1.00 | − | − | − | − | − | − | − |
| VLA2.42 | 659.149 | –586.201 | 0.44 ± 0.02 | –10.155 | 0.75 | − | − | − | − | − | − | − |
| VLA2.43 | 685.042 | –666.283 | 1.08 ± 0.02 | 2.329 | 1.09 | − | − | − | − | − | − | − |
| VLA2.44 | 685.084 | –601.471 | 6.08 ± 0.14 | 14.934 | 0.52 | − | − | − | − | 0.7 b | −152 ± 73 b | − |
| VLA2.45 | 686.305 | –605.049 | 8.87 ± 0.14 | 15.325 | 0.49 | 1.2 ± 0.2 | −4 ± 7 | − | − | − | − | − |
| VLA2.46 | 687.610 | –655.483 | 4.26 ± 0.02 | –6.636 | 0.64 | − | − | − | − | − | − | − |
| VLA2.47 | 687.947 | –606.522 | 13.84 ± 0.15 | 15.285 | 0.44 | − | − | − | − | − | − | − |
| VLA2.48 | 688.157 | –609.310 | 12.97 ± 0.07 | 16.094 | 0.60 | − | − | − | − | 0.4 c | −103 ± 43 c | − |
| VLA2.49 | 688.199 | –672.810 | 0.27 ± 0.02 | 1.776 | 0.63 | − | − | − | − | − | − | − |
| VLA2.50 | 688.831 | –647.507 | 0.38 ± 0.02 | –3.158 | 0.56 | − | − | − | − | − | − | − |
| VLA2.51 | 692.115 | –619.831 | 4.77 ± 0.04 | 12.777 | 0.52 | − | − | − | − | − | − | − |
| VLA2.52 | 699.188 | –636.635 | 14.07 ± 0.17 | 15.002 | 0.59 | 0.7 ± 0.1 | −45 ± 6 | − | − | − | − | − |
| VLA2.53 | 699.609 | –659.790 | 9.75 ± 0.03 | 17.213 | 0.58 | − | − | − | − | − | − | − |
| VLA2.54 | 702.514 | –655.918 | 0.65 ± 0.04 | 16.256 | 0.55 | − | − | − | − | − | − | − |
| VLA2.55 | 702.809 | –657.299 | 1.11 ± 0.05 | 16.269 | 0.46 | − | − | − | − | − | − | − |
| VLA2.56 | 703.398 | –636.490 | 1.16 ± 0.06 | 14.584 | 0.42 | − | − | − | − | − | − | − |
| VLA2.57 | 703.483 | –658.810 | 9.30 ± 0.07 | 15.851 | 0.46 | − | − | − | − | − | − | − |
| VLA2.58 | 710.514 | –668.293 | 0.26 ± 0.02 | –6.219 | 0.65 | − | − | − | − | − | − | − |
| VLA2.59 | 710.556 | –926.731 | 4.29 ± 0.03 | 8.179 | 0.72 | − | − | − | − | − | − | − |
| VLA2.60 | 711.987 | –661.125 | 3.56 ± 0.02 | 6.764 | 1.09 | − | − | − | − | − | − | − |
| VLA2.61 | 712.282 | –660.404 | 1.14 ± 0.02 | 8.180 | 0.88 | − | − | − | − | − | − | − |
| VLA2.62 | 712.282 | –658.833 | 0.88 ± 0.06 | 10.243 | 0.62 | − | − | − | − | − | − | − |
| VLA2.63 | 712.450 | –661.923 | 10.81 ± 0.03 | 5.929 | 0.83 | − | − | − | − | − | − | − |
| VLA2.64 | 714.597 | –925.274 | 26.25 ± 0.04 | 9.232 | 0.53 | 0.7 ± 0.1 | −48 ± 3 |
|
|
− | − |
|
| VLA2.65 | 716.071 | –671.002 | 0.19 ± 0.02 | –7.449 | 0.89 | − | − | − | − | − | − | − |
| VLA2.66 | 719.018 | –670.666 | 0.26 ± 0.02 | 5.308 | 0.79 | − | − | − | − | − | − | − |
| VLA2.67 | 740.785 | –707.310 | 0.90 ± 0.02 | –11.193 | 0.59 | − | − | − | − | − | − | − |
| VLA2.68 | 742.258 | –708.374 | 0.24 ± 0.02 | –11.166 | 0.51 | − | − | − | − | − | − | − |
Notes.
(a)
The output TbΔΩ must be adjusted according to the real value of Γ + Γν, which depends on the gas temperature (T). Using ΔVi ≈ 0.5 (T/ 100)1/2 (Vlemmings et al. 2006) we estimated that TVLA 2 = 1600 K (Γ + Γν = 9 s-1) for which TbΔΩ has to be adjusted by adding + 0.95 log K sr (Anderson & Watson 1993).
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