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Table 2

6.7 GHz CH3OH maser parameters.

Feature Epochs of I peak V LSR Δx Δy V x V y
number detection (Jy beam-1) (km s-1) (mas) (mas) (km s-1) (km s-1)
Cluster A
1 1, 2, 3 139.89 −56.0 0.00 ± 0.00 0.00 ± 0.00 ... ...
2 1, 2, 3 95.96 −56.4 −10.19 ± 0.22 3.76 ± 0.22 ... ...
3 1, 2, 3 89.68 −55.7 10.36 ± 0.23 −5.12 ± 0.22 4.8 ± 0.6 −0.9 ± 0.6
4 1, 2, 3 16.11 −57.2 −79.19 ± 0.22 22.96 ± 0.22 3.4 ± 0.5 −1.9 ± 0.5
5 3 14.87 −56.8 −35.98 ± 0.22 11.36 ± 0.21 ... ...
6 1, 2 11.62 −56.9 −40.90 ± 0.22 13.54 ± 0.22 ... ...
7 1, 2, 3 5.80 −56.7 −23.08 ± 0.22 7.20 ± 0.22 6.6 ± 0.6 −1.2 ± 0.5
8 3 4.77 −56.8 −43.33 ± 0.22 13.16 ± 0.22 ... ...
9 1, 2, 3 4.07 −57.2 −60.01 ± 0.23 18.28 ± 0.22 1.3 ± 0.6 −1.3 ± 0.5
10 1, 2, 3 3.61 −57.3 −69.02 ± 0.23 20.47 ± 0.22 ... ...
11 1, 2, 3 3.39 −56.9 −33.95 ± 0.22 10.55 ± 0.22 8.4 ± 0.6 −3.8 ± 0.6
12 1, 2, 3 3.38 −57.0 −49.22 ± 0.22 15.47 ± 0.22 ... ...
13 1, 2, 3 1.79 −57.2 −85.69 ± 0.24 24.49 ± 0.23 ... ...
14 1, 2, 3 0.62 −55.0 23.23 ± 0.23 −9.49 ± 0.22 4.3 ± 0.7 −1.8 ± 0.7
15 1, 2 0.22 −55.3 34.88 ± 0.26 −54.62 ± 0.25 ... ...
16 1 0.15 −55.4 27.03 ± 0.56 −46.36 ± 0.50 ... ...
17 1 0.13 −54.8 30.26 ± 0.33 −10.71 ± 0.31 ... ...
18 1 0.12 −54.9 42.18 ± 0.31 −53.09 ± 0.29 ... ...
19 1 0.10 −55.2 68.44 ± 0.35 −72.37 ± 0.32 ... ...
20 1 0.04 −53.5 109.29 ± 0.47 −64.42 ± 0.42 ... ...
21 1 0.04 −54.8 76.82 ± 0.51 −70.66 ± 0.45 ... ...
Cluster B
1 1, 2, 3 10.88 −57.8 116.11 ± 0.22 −177.87 ± 0.22 ... ...
2 1, 2, 3 8.57 −57.5 126.83 ± 0.22 −172.41 ± 0.22 −3.3 ± 0.5 −2.9 ± 0.5
3 1, 2, 3 8.45 −57.6 130.97 ± 0.22 −219.63 ± 0.22 4.8 ± 0.5 3.9 ± 0.5
4 1, 2, 3 5.39 −57.2 133.33 ± 0.22 −169.14 ± 0.22 −2.3 ± 0.5 −3.7 ± 0.5
5 1, 2, 3 5.34 −56.2 163.58 ± 0.28 −157.64 ± 0.26 3.5 ± 0.7 4.4 ± 0.6
6 1, 2, 3 4.55 −57.7 112.29 ± 0.22 −235.45 ± 0.22 0.5 ± 0.6 0.2 ± 0.6
7 1 4.19 −57.9 121.44 ± 0.22 −169.72 ± 0.22 ... ...
8 1, 2, 3 4.15 −57.6 123.73 ± 0.22 −226.02 ± 0.22 7.3 ± 0.6 5.1 ± 0.5
9 1, 2, 3 3.66 −57.5 131.83 ± 0.22 −165.43 ± 0.22 −3.3 ± 0.6 −5.6 ± 0.6
10 1, 2, 3 2.98 −57.4 118.21 ± 0.24 −226.02 ± 0.23 4.3 ± 0.6 3.1 ± 0.6
11 1, 2, 3 2.26 −56.5 157.45 ± 0.33 −163.39 ± 0.30 ... ...
12 1, 2, 3 1.90 −57.4 136.69 ± 0.25 −162.66 ± 0.24 −6.4 ± 0.6 −4.8 ± 0.6
13 1, 2, 3 1.82 −56.8 143.98 ± 0.23 −167.49 ± 0.23 4.6 ± 0.6 3.7 ± 0.6
14 1, 2, 3 1.72 −57.3 138.38 ± 0.23 −210.10 ± 0.22 3.4 ± 0.6 1.3 ± 0.6
15 1, 2 1.12 −57.4 138.81 ± 0.24 −185.71 ± 0.24 ... ...
16 3 1.01 −55.8 172.35 ± 0.34 −146.55 ± 0.33 ... ...
17 1, 2 0.85 −57.0 126.38 ± 0.25 −236.36 ± 0.24 ... ...
18 1, 2 0.34 −58.7 95.10 ± 0.23 −180.44 ± 0.23 ... ...
19 1 0.16 −58.7 98.95 ± 0.29 −187.32 ± 0.27 ... ...
20 1 0.09 −58.7 88.72 ± 0.36 −176.09 ± 0.32 ... ...
Cluster C
1 1, 2, 3 22.45 −61.3 −76.06 ± 0.22 −216.73 ± 0.22 ... ...
2 1, 2, 3 11.73 −61.2 −90.79 ± 0.22 −222.56 ± 0.22 ... ...
3 1, 2, 3 8.90 −61.4 −52.32 ± 0.22 −205.38 ± 0.22 ... ...
4 1, 2, 3 6.70 −61.4 −63.52 ± 0.22 −211.73 ± 0.22 ... ...
5 1, 2, 3 4.67 −60.6 −20.59 ± 0.22 −213.51 ± 0.22 2.4 ± 0.6 5.8 ± 0.6
6 1 4.47 −60.9 −23.21 ± 0.22 −226.53 ± 0.22 ... ...
7 1, 2, 3 3.97 −60.8 −42.72 ± 0.23 −223.93 ± 0.22 −3.2 ± 0.6 2.0 ± 0.6
8 2, 3 3.65 −61.2 −84.90 ± 0.26 −220.33 ± 0.27 ... ...
9 1, 2, 3 3.16 −60.8 −32.59 ± 0.22 −223.26 ± 0.22 ... ...
10 1, 2, 3 2.88 −61.4 −47.95 ± 0.23 −204.22 ± 0.22 −4.6 ± 0.6 −2.9 ± 0.6
11 1, 2, 3 2.76 −60.8 −18.82 ± 0.22 −226.70 ± 0.22 ... ...
12 1, 2, 3 2.74 −61.2 −96.57 ± 0.22 −225.85 ± 0.22 ... ...
13 1, 2, 3 2.73 −61.0 −38.89 ± 0.22 −198.64 ± 0.22 −5.0 ± 0.6 −1.5 ± 0.6
14 1 2.44 −60.8 −11.87 ± 0.23 −225.24 ± 0.23 ... ...
15 1, 2 2.18 −60.5 −30.75 ± 0.23 −212.96 ± 0.23 ... ...
16 2 1.66 −60.9 −27.59 ± 0.25 −227.45 ± 0.25 ... ...
17 1, 2, 3 1.52 −60.8 −49.05 ± 0.23 −226.32 ± 0.23 −3.7 ± 0.6 4.5 ± 0.6
18 2, 3 1.50 −60.6 −7.96 ± 0.29 −221.73 ± 0.30 ... ...
19 1 1.21 −60.9 −30.26 ± 0.23 −233.55 ± 0.22 ... ...
20 1 0.67 −60.4 −3.82 ± 0.26 −216.19 ± 0.25 ... ...
21 1, 2 0.46 −60.2 15.53 ± 0.23 −211.69 ± 0.23 ... ...
22 1 0.29 −60.2 4.66 ± 0.24 −211.16 ± 0.23 ... ...
23 1 0.21 −60.2 21.63 ± 0.24 −207.60 ± 0.23 ... ...
24 1 0.16 −60.2 9.22 ± 0.29 −207.58 ± 0.27 ... ...
25 1, 2, 3 0.16 −60.1 13.98 ± 0.25 −219.16 ± 0.24 3.3 ± 0.8 2.7 ± 0.8
26 1 0.15 −60.0 26.78 ± 0.29 −207.22 ± 0.27 ... ...
27 1 0.11 −60.0 34.94 ± 0.34 −214.29 ± 0.31 ... ...
28 1 0.05 −59.9 31.41 ± 0.52 −206.13 ± 0.45 ... ...
29 1 0.04 −59.8 45.34 ± 0.50 −211.78 ± 0.44 ... ...
Cluster D
1 1, 2, 3 10.50 −60.5 −269.61 ± 0.23 −279.16 ± 0.22 −3.1 ± 0.5 −0.8 ± 0.5
2 1, 2, 3 9.30 −60.6 −251.30 ± 0.22 −272.12 ± 0.22 −5.2 ± 0.5 −4.5 ± 0.5
3 1, 2, 3 4.92 −60.6 −259.74 ± 0.22 −274.23 ± 0.22 ... ...
4 1 3.48 −60.9 −242.43 ± 0.22 −265.12 ± 0.22 ... ...
5 1, 2, 3 2.49 −60.4 −278.43 ± 0.22 −281.39 ± 0.22 ... ...
6 1, 2, 3 2.45 −60.7 −243.93 ± 0.23 −272.15 ± 0.22 ... ...
7 3 2.33 −60.8 −256.89 ± 0.23 −271.67 ± 0.23 ... ...
8 1, 2 0.39 −60.3 −287.93 ± 0.26 −282.13 ± 0.25 ... ...
Cluster E
1 1, 2, 3 27.20 −58.0 158.51 ± 0.22 −502.88 ± 0.22 −1.2 ± 0.6 −2.1 ± 0.6
2 1, 2, 3 9.99 −58.1 153.63 ± 0.22 −510.19 ± 0.22 ... ...
3 1, 2, 3 6.59 −58.0 162.60 ± 0.22 −497.84 ± 0.22 ... ...
4 1, 2, 3 3.59 −58.3 103.34 ± 0.22 −489.90 ± 0.22 −5.2 ± 0.6 −0.8 ± 0.6
5 1, 2, 3 2.58 −58.2 148.77 ± 0.23 −515.05 ± 0.22 ... ...
6 1, 2, 3 2.57 −59.0 87.26 ± 0.22 −558.22 ± 0.22 −0.5 ± 0.6 0.4 ± 0.6
7 1 2.23 −58.1 135.02 ± 0.23 −507.95 ± 0.22 ... ...
8 1, 2, 3 2.10 −58.3 111.24 ± 0.22 −487.24 ± 0.22 −5.9 ± 0.6 −1.3 ± 0.6
9 1, 2, 3 1.87 −58.4 94.98 ± 0.23 −492.10 ± 0.22 −1.4 ± 0.6 0.1 ± 0.6
10 1, 2, 3 1.08 −58.5 87.32 ± 0.23 −496.15 ± 0.23 −7.5 ± 0.7 1.6 ± 0.7
11 1, 2 0.81 −58.3 118.43 ± 0.23 −487.99 ± 0.23 ... ...
12 3 0.76 −58.4 88.50 ± 0.24 −499.17 ± 0.24 ... ...
13 1, 2 0.57 −58.5 80.88 ± 0.23 −498.27 ± 0.22 ... ...
14 1 0.48 −58.4 132.10 ± 0.25 −482.04 ± 0.24 ... ...
15 1, 2, 3 0.42 −58.7 129.42 ± 0.25 −547.72 ± 0.25 −1.5 ± 0.7 2.0 ± 0.7
16 1, 2, 3 0.28 −59.0 85.84 ± 0.26 −564.54 ± 0.25 ... ...
17 1, 2, 3 0.25 −59.0 88.70 ± 0.26 −552.39 ± 0.25 ... ...
18 1, 2 0.23 −58.6 71.88 ± 0.25 −503.73 ± 0.24 ... ...
19 1 0.19 −59.3 60.79 ± 0.26 −579.49 ± 0.25 ... ...
20 1, 2 0.18 −58.8 146.00 ± 0.27 −537.06 ± 0.26 ... ...
21 1 0.17 −59.0 38.18 ± 0.30 −608.17 ± 0.28 ... ...
22 1, 2 0.13 −58.7 124.73 ± 0.27 −553.96 ± 0.26 ... ...
23 1 0.11 −58.9 165.04 ± 0.33 −528.22 ± 0.31 ... ...
24 1 0.07 −59.4 68.73 ± 0.39 −582.62 ± 0.35 ... ...
25 1 0.05 −59.3 53.89 ± 0.44 −583.35 ± 0.39 ... ...
26 1 0.04 −59.2 79.90 ± 0.54 −576.28 ± 0.48 ... ...
Not in clusters
1 1 0.15 −58.8 251.76 ± 0.28 −414.67 ± 0.27 ... ...
2 1, 2, 3 0.09 −59.9 −136.61 ± 0.32 −352.74 ± 0.30 1.8 ± 1.1 −0.3 ± 1.0
3 1 0.09 −60.0 −147.99 ± 0.36 −358.23 ± 0.33 ... ...
4 3 0.08 −59.7 −123.97 ± 0.40 −347.00 ± 0.38 ... ...
5 1 0.08 −59.7 −73.83 ± 0.36 −344.40 ± 0.32 ... ...
6 1 0.06 −59.7 −86.97 ± 0.40 −350.47 ± 0.36 ... ...
7 1 0.04 −59.9 −128.31 ± 0.53 −347.34 ± 0.47 ... ...
8 1 0.04 −53.6 224.43 ± 0.59 −86.81 ± 0.51 ... ...

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 of cluster A, 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”).

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