Table A.2
22.2 GHz H2O maser parameters for G011.92−0.61.
| Feature | Epochsa of | I peak | V LSR | Δ x | Δ y | V x | V y |
| number | detection | (Jy beam-1) | (km s-1) | (mas) | (mas) | (km s-1) | (km s-1) |
|
|
|||||||
| 1 | 1, 2, 3 | 32.06 | 36.5 | 0.00 ± 0.00 | 0.00 ± 0.00 | −8.0 ± 4.5 | −18.9 ± 4.5 |
| 2 | 1, 2, 3 | 7.69 | 39.2 | 8.96 ± 0.07 | 74.27 ± 0.07 | 12.6 ± 4.5 | 12.2 ± 4.7 |
| 3 | 1, 2, 3 | 3.75 | 40.1 | 9.27 ± 0.07 | 72.94 ± 0.07 | 14.3 ± 4.5 | 10.6 ± 4.6 |
| 4 | 1, 2, 3 | 2.92 | 39.6 | 26.75 ± 0.07 | 55.08 ± 0.07 | 20.0 ± 4.5 | 1.8 ± 4.8 |
| 5 | 1, 2, 3 | 2.45 | 38.9 | 25.32 ± 0.07 | 40.87 ± 0.07 | 14.2 ± 4.6 | 2.8 ± 5.2 |
| 6 | 1, 2, 3 | 1.60 | 37.7 | −36.92 ± 0.07 | 41.07 ± 0.07 | −5.5 ± 4.5 | −4.9 ± 4.6 |
| 7 | 1, 2, 3 | 1.38 | 34.7 | −74.46 ± 0.07 | 198.23 ± 0.07 | 25.0 ± 4.8 | 11.4 ± 5.2 |
| 8 | 1, 2, 3 | 1.00 | 39.9 | −1.02 ± 0.07 | 100.21 ± 0.07 | 7.2 ± 4.5 | 11.6 ± 5.0 |
| 9 | 1, 2, 3 | 0.95 | 34.6 | −73.76 ± 0.07 | 198.78 ± 0.07 | 15.6 ± 4.5 | −2.8 ± 4.8 |
| 10 | 1, 2, 3 | 0.81 | 22.2 | −188.58 ± 0.07 | 171.34 ± 0.08 | −21.8 ± 4.8 | −7.8 ± 5.0 |
| 11 | 1, 2, 3 | 0.71 | 21.4 | −189.47 ± 0.07 | 170.83 ± 0.08 | −22.9 ± 5.0 | 3.3 ± 5.7 |
| 12 | 1, 2, 3 | 0.54 | 25.6 | −211.71 ± 0.07 | 172.46 ± 0.07 | −11.8 ± 5.4 | 4.6 ± 5.6 |
| 13 | 1, 2, 3 | 0.38 | 37.8 | −29.01 ± 0.07 | 34.47 ± 0.08 | −4.0 ± 4.7 | −6.4 ± 5.7 |
| 14 | 1, 2 | 0.34 | 41.3 | −52.53 ± 0.07 | 222.77 ± 0.07 | ... | ... |
| 15 | 1, 2 | 0.32 | 25.7 | −212.45 ± 0.07 | 172.16 ± 0.08 | ... | ... |
| 16 | 1, 2, 3 | 0.29 | 25.7 | −194.06 ± 0.07 | 169.63 ± 0.09 | −28.0 ± 4.8 | 8.9 ± 6.0 |
| 17 | 1, 2 | 0.24 | 38.2 | 2.92 ± 0.07 | −0.95 ± 0.08 | ... | ... |
| 18 | 1, 2 | 0.23 | 42.0 | −66.18 ± 0.07 | 82.65 ± 0.08 | ... | ... |
| 19 | 1, 2 | 0.21 | 34.8 | −75.16 ± 0.08 | 197.38 ± 0.09 | ... | ... |
| 20 | 2, 3 | 0.19 | 38.3 | −30.96 ± 0.07 | 35.24 ± 0.08 | ... | ... |
| 21 | 1, 2, 3 | 0.19 | 38.3 | 1.85 ± 0.07 | −0.63 ± 0.09 | −3.9 ± 5.2 | −24.8 ± 7.4 |
| 22 | 1, 2, 3 | 0.17 | 42.7 | −50.88 ± 0.07 | 223.26 ± 0.09 | ... | ... |
| 23 | 1, 2 | 0.14 | 25.4 | −210.84 ± 0.08 | 172.91 ± 0.08 | ... | ... |
| 24 | 1, 2, 3 | 0.13 | 33.2 | 0.07 ± 0.09 | 0.09 ± 0.14 | −10.1 ± 5.5 | −16.4 ± 8.7 |
| 25 | 1 | 0.11 | 20.1 | −274.07 ± 0.08 | 135.30 ± 0.09 | ... | ... |
| 26 | 1, 2, 3 | 0.11 | 22.0 | −187.69 ± 0.09 | 171.79 ± 0.12 | ... | ... |
| 27 | 1, 2 | 0.10 | 23.0 | −182.58 ± 0.08 | 174.22 ± 0.11 | ... | ... |
|
|
|||||||
| Center of Motion | |||||||
| 0 | 1, 2, 3 | ... | 33.9 | −61.78 ± 0.05 | 99.98 ± 0.05 | 0.0 ± 0.0 | 0.0 ± 0.0 |
Notes. Column 1 gives the feature label number; Col. 2 lists the
observing epochs at which the feature was detected; Cols. 3 and 4 provide the
intensity of the strongest spot and the intensity-weighted LSR velocity, respectively,
averaged over the observing epochs; Cols. 5 and 6 give the position offsets (with the
associated errors) along the RA and Dec axes, relative to the feature #1, measured at
the first epoch of detection; Cols. 7 and 8 give the components of the relative proper
motion (with the associated errors) along the RA and Dec axes, measured with respect
to the reference feature #0 (the “center of motion”). The absolute position of the
feature #1 at the BeSSeL epoch on February 15, 2011, is: RA (J2000) =
18h13m58
1227, Dec (J2000) = −18°54′20
359,
with an accuracy of ±2
mas.
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