Table A.1
Parameters of 6.7 GHz methanol maser cloudlets that appeared at all three epochs and were used for proper motion studies.
ΔRA | ΔDec | Vp | Vfit | FWHM | Sp | Sfit | Lproj | μRA | μDec | |
---|---|---|---|---|---|---|---|---|---|---|
(mas) | (mas) | (km s−1) | (km s−1) | (km s−1) | (Jy beam−1) | (Jy beam−1) | (AU) | (mas yr−1) | (mas yr−1) | |
(km s−1) | (km s−1) | |||||||||
Cloudlet 1 | ||||||||||
E1 | −253.533 | −152.352 | 73.70 | 0.057 | 1.6 | −0.33 ± 0.05 | −0.16 ± 0.03 | |||
E2 | −256.310 | −155.497 | 73.66 | 73.69 | 0.27 | 0.061 | 0.059 | 6.2 | (−5.0 ± 0.8) | (−2.4 ± 0.4) |
E3 | −257.195 | −154.774 | 73.67 | 73.70 | 0.27 | 0.071 | 0.069 | 4.4 | ||
Cloudlet 2 | ||||||||||
E1 | 6.803 | −173.999 | 77.03 | 0.123 | 6.3 | −0.07 ± 0.03 | −0.11 ± 0.01 | |||
E2 | 5.433 | −176.891 | 77.00 | 77.04 | 0.29 | 0.066 | 0.070 | 8.4 | (−1.1 ± 0.5) | (−1.7 ± 0.2) |
E3 | 6.598 | −176.101 | 77.09 | 77.04 | 0.44 | 0.066 | 0.060 | 18.0 | ||
Cloudlet 3 | ||||||||||
E1 | 26.630 | −141.485 | 77.56 | 77.57 | 0.34 | 1.152 | 1.129 | 20.5 | 0.12 ± 0.02 | −0.18 ± 0.05 |
E2 | 26.888 | −145.149 | 77.53 | 77.57 | 0.34 | 0.622 | 0.631 | 18.7 | (1.8 ± 0.3) | (−2.7 ± 0.7) |
E3 | 26.845 | −144.007 | 77.53 | 77.59 | 0.36 | 0.791 | 0.802 | 25.6 | ||
Cloudlet 4 | ||||||||||
E1 | 9.339 | −145.446 | 77.56 | 77.51 | 0.25 | 0.452 | 0.481 | 9.6 | −0.03 ± 0.01 | −0.16 ± 0.01 |
E2 | 9.973 | −148.564 | 77.44 | 0.220 | 11.6 | (−0.5 ± 0.1) | (−2.4 ± 0.1) | |||
E3 | 10.024 | −147.938 | 77.44 | 77.47 | 0.26 | 0.326 | 0.344 | 14.8 | ||
Cloudlet 5 | ||||||||||
E1 | −39.464 | −140.038 | 78.27 | 78.28 | 0.21 | 1.556 | 0.741 | 67.2 | −0.14 ± 0.01 | −0.10 ± 0.01 |
E1 | 78.32 | 0.68 | 0.848 | (−2.1 ± 0.1) | (−1.5 ± 0.1) | |||||
E2 | −40.751 | −142.033 | 78.32 | 78.03 | 0.50 | 1.445 | 0.772 | 16.2 | ||
E2 | 78.33 | 0.37 | 1.118 | |||||||
E3 | −40.972 | −141.999 | 78.32 | 77.99 | 0.44 | 2.643 | 0.897 | 18.0 | ||
E3 | 78.30 | 0.35 | 2.469 | |||||||
Cloudlet 6 | ||||||||||
E1 | 86.212 | −83.371 | 78.88 | 78.90 | 0.44 | 0.515 | 0.460 | 23.2 | 0.11 ± 0.01 | −0.14 ± 0.01 |
E2 | 86.009 | −85.654 | 78.93 | 78.88 | 0.40 | 0.226 | 0.229 | 14.6 | (1.6 ± 0.1) | (−2.1 ± 0.1) |
E3 | 87.093 | −86.333 | 78.85 | 78.89 | 0.36 | 0.263 | 0.255 | 18.9 | ||
Cloudlet 7 | ||||||||||
E1 | 67.451 | −84.341 | 79.41 | 79.39 | 0.27 | 0.996 | 0.780 | 19.6 | 0.01 ± 0.01 | −0.04 ± 0.01 |
E1 | 79.70 | 0.51 | 0.612 | (0.2 ± 0.2) | (−0.6 ± 0.2) | |||||
E1 | 80.25 | 0.36 | 0.568 | |||||||
E2 | 65.743 | −83.326 | 80.16 | 79.35 | 0.31 | 0.429 | 0.377 | 19.2 | ||
E2 | 79.69 | 0.41 | 0.308 | |||||||
E2 | 80.16 | 0.41 | 0.415 | |||||||
E3 | 65.861 | −82.886 | 80.17 | 79.40 | 0.33 | 0.589 | 0.541 | 18.8 | ||
E3 | 79.71 | 0.29 | 0.332 | |||||||
E3 | 80.15 | 0.43 | 0.581 | |||||||
Cloudlet 8(1) | ||||||||||
E1 | 152.045 | −20.684 | 79.32 | 79.31 | 0.21 | 0.224 | 0.215 | 87.2 | ||
E1 | 134.537 | −29.093 | 79.67 | 79.64 | 0.32 | 0.205 | 0.204 | 0.15 ± 0.05 | −0.10 ± 0.01 | |
E2 | 135.040 | −31.685 | 79.63 | 0.103 | 10.3 | (2.3 ± 0.7) | (−1.5 ± 0.2) | |||
E3 | 136.778 | −31.472 | 79.64 | 79.60 | 0.38 | 0.108 | 0.111 | 13.3 | ||
Cloudlet 9 | ||||||||||
E1 | −93.127 | −124.285 | 80.02 | 80.01 | 0.23 | 2.406 | 2.437 | 8.7 | −0.22 ± 0.01 | 0.01 ± 0.05 |
E2 | −95.110 | −125.658 | 79.98 | 80.00 | 0.30 | 1.379 | 1.355 | 4.9 | (−3.3 ± 0.1) | (0.1 ± 0.8) |
E3 | −95.544 | −125.577 | 79.99 | 80.00 | 0.28 | 2.443 | 2.461 | 4.2 | ||
Cloudlet 10 | ||||||||||
E1 | −7.721 | −125.195 | 80.11 | 80.12 | 0.31 | 1.316 | 1.284 | 20.4 | −0.08 ± 0.01 | −0.05 ± 0.01 |
E2 | −8.968 | −128.111 | 80.07 | 80.09 | 0.38 | 0.708 | 0.695 | 18.7 | (−1.2 ± 0.1) | (−0.8 ± 0.1) |
E3 | −9.382 | −127.429 | 80.08 | 80.12 | 0.42 | 0.668 | 0.661 | 20.9 | ||
Cloudlet 11 | ||||||||||
E1 | 50.535 | −90.492 | 80.38 | 80.34 | 0.55 | 0.355 | 0.360 | 10.2 | −0.04 ± 0.02 | −0.03 ± 0.02 |
E1 | 80.71 | 0.24 | 0.256 | (−0.7 ± 0.3) | (−0.4 ± 0.2) | |||||
E2 | 49.989 | −91.483 | 80.60 | 80.56 | 0.55 | 0.145 | 0.146 | 4.2 | ||
E3 | 49.811 | −90.444 | 80.61 | 80.56 | 0.65 | 0.263 | 0.232 | 8.9 | ||
Cloudlet 12 | ||||||||||
E1 | 45.898 | 154.204 | 80.73 | 80.71 | 0.24 | 0.537 | 0.541 | 12.2 | 0.08 ± 0.03 | 0.26 ± 0.01 |
E2 | 47.109 | 155.542 | 80.60 | 80.64 | 0.23 | 0.202 | 0.217 | 4.8 | (1.1 ± 0.5) | (3.9 ± 0.1) |
E3 | 46.225 | 155.697 | 80.69 | 80.68 | 0.25 | 0.192 | 0.195 | 6.4 | ||
Cloudlets 13 and 14(2) | ||||||||||
E1 | 53.535 | 101.834 | 80.64 | 80.62 | 0.16 | 1.178 | 0.768 | 77.5 | 0.04 ± 0.01(a) | 0.22 ± 0.03(a) |
E1 | 55.143 | 93.753 | 80.81 | 80.78 | 0.63 | 0.513 | 0.08 ± 0.02(b) | 0.08 ± 0.01(b) | ||
E2 | 53.763 | 101.775 | 80.60 | 80.58 | 0.16 | 0.562 | 0.300 | 78.8 | (0.6 ± 0.1)(a) | (3.4 ± 0.5)(a) |
E2 | 57.322 | 88.883 | 80.86 | 80.75 | 0.70 | 0.318 | (1.2 ± 0.3)(b) | (1.2 ± 0.1)(b) | ||
E3 | 53.919 | 102.736 | 80.61 | 80.58 | 0.19 | 0.600 | 0.357 | 101.2 | ||
E3 | 57.125 | 90.007 | 80.87 | 80.82 | 0.67 | 0.345 | ||||
Cloudlet 15 | ||||||||||
E1 | −125.576 | 93.581 | 80.99 | 80.96 | 0.28 | 0.214 | 0.223 | 3.5 | −0.03 ± 0.02 | 0.17 ± 0.05 |
E2 | −125.793 | 92.900 | 80.86 | 80.90 | 0.32 | 0.187 | 0.190 | 5.3 | (−0.5 ± 0.3) | (2.5 ± 0.7) |
E3 | −126.072 | 94.390 | 80.96 | 80.92 | 0.29 | 0.193 | 0.204 | 2.9 | ||
Cloudlet 16 | ||||||||||
E1 | −179.205 | 59.177 | 81.61 | 0.249 | 6.1 | −0.05 ± 0.04 | −0.24 ± 0.09 | |||
E2 | −180.428 | 57.766 | 81.48 | 0.100 | (-0.8 ± 0.6) | (−3.7 ± 1.4) | ||||
E3 | −180.471 | 57.523 | 81.57 | 0.093 | 1.8 | |||||
Cloudlet 17 | ||||||||||
E1 | 38.705 | 91.985 | 81.52 | 81.04 | 0.37 | 0.764 | 0.161 | 33.9 | 0.11 ± 0.01 | 0.13 ± 0.01 |
E1 | 81.54 | 0.31 | 0.738 | (1.7 ± 0.2) | (2.0 ± 0.1) | |||||
E2 | 39.022 | 91.172 | 81.48 | 81.07 | 0.40 | 0.481 | 0.269 | 31.7 | ||
E2 | 81.51 | 0.30 | 0.480 | |||||||
E3 | 39.398 | 91.892 | 81.48 | 81.08 | 0.32 | 0.546 | 0.261 | 30.1 | ||
E3 | 81.51 | 0.33 | 0.555 | |||||||
Cloudlet 18 | ||||||||||
E1 | 41.846 | 77.244 | 81.87 | 81.86 | 0.27 | 1.153 | 1.149 | 32.4 | 0.11 ± 0.01 | 0.16 ± 0.01 |
E2 | 42.343 | 76.458 | 81.83 | 81.83 | 0.26 | 0.938 | 0.950 | 8.6 | (1.6 ± 0.2) | (2.4 ± 0.1) |
E3 | 42.456 | 77.550 | 81.83 | 81.85 | 0.24 | 1.228 | 1.265 | 8.4 | ||
Cloudlet 19 | ||||||||||
E1 | 29.657 | 107.075 | 81.87 | 81.42 | 0.27 | 1.006 | 0.378 | 41.4 | 0.07 ± 0.05 | 0.02 ± 0.04 |
E1 | 81.88 | 0.37 | 1.011 | (1.1 ± 0.8) | (0.3 ± 0.6) | |||||
E1 | 82.10 | 0.12 | 0.561 | |||||||
E2 | 30.247 | 106.219 | 81.83 | 81.37 | 0.24 | 0.505 | 0.226 | 31.4 | ||
E2 | 81.84 | 0.46 | 0.496 | |||||||
E3 | 30.254 | 107.307 | 81.83 | 81.37 | 0.25 | 0.598 | 0.252 | 18.9 | ||
E3 | 81.86 | 0.46 | 0.629 | |||||||
Cloudlet 20 | ||||||||||
E1 | 72.954 | −74.195 | 82.84 | 82.82 | 0.23 | 0.304 | 0.307 | 2.2 | 0.06 ± 0.01 | 0.15 ± 0.06 |
E2 | 73.199 | −73.980 | 82.71 | 82.73 | 0.36 | 0.179 | 0.181 | 3.7 | (0.9 ± 0.1) | (2.2 ± 0.9) |
E3 | 73.004 | −73.894 | 82.80 | 82.76 | 0.28 | 0.194 | 0.206 | 3.5 | ||
Cloudlet 21 | ||||||||||
E1 | 76.096 | −68.423 | 82.31 | 82.32 | 0.21 | 0.511 | 0.515 | 4.8 | −0.02 ± 0.02 | −0.07 ± 0.01 |
E2 | 75.413 | −71.325 | 82.27 | 81.68 | 0.43 | 0.606 | 0.224 | 13.4 | (−0.3 ± 0.3) | (−1.0 ± 0.1) |
E2 | 82.31 | 0.34 | 0.619 | |||||||
E3 | 75.269 | −70.270 | 82.27 | 81.68 | 0.42 | 0.703 | 0.320 | 14.7 | ||
E3 | 82.30 | 0.36 | 0.700 | |||||||
Cloudlet 22 | ||||||||||
E1 | −115.358 | −105.101 | 82.40 | 82.37 | 0.24 | 0.709 | 0.727 | 4.1 | −0.12 ± 0.01 | −0.12 ± 0.01 |
E2 | −116.431 | −108.533 | 82.36 | 82.33 | 0.23 | 0.432 | 0.449 | 6.0 | (−1.9 ± 0.1) | (−1.8 ± 0.1) |
E3 | −116.699 | −107.896 | 82.36 | 82.34 | 0.27 | 0.683 | 0.696 | 29.1 | ||
Cloudlet 23 | ||||||||||
E1 | 31.639 | 88.650 | 82.57 | 82.51 | 0.25 | 4.619 | 2.665 | 38.3 | 0.07 ± 0.02 | 0.05 ± 0.01 |
E1 | 82.62 | 0.61 | 2.359 | (1.1 ± 0.3) | (0.8 ± 0.2) | |||||
E2 | 31.752 | 86.848 | 82.53 | 82.50 | 0.57 | 2.152 | 1.637 | 37.5 | ||
E2 | 82.57 | 0.14 | 0.642 | |||||||
E2 | 82.84 | 0.21 | 0.632 | |||||||
E3 | 32.219 | 89.523 | 82.45 | 82.46 | 0.37 | 3.699 | 3.641 | 34.0 | ||
E3 | 82.83 | 0.27 | 1.381 | |||||||
Cloudlet 24 | ||||||||||
E1 | −179.404 | 76.999 | 83.10 | 83.14 | 0.22 | 0.293 | 0.310 | 4.0 | −0.17 ± 0.06 | 0.11 ± 0.04 |
E2 | −181.984 | 76.686 | 83.15 | 0.288 | 2.6 | (−2.6 ± 0.9) | (1.7 ± 0.7) | |||
E3 | −181.533 | 77.319 | 83.15 | 83.13 | 0.31 | 0.371 | 0.374 | 4.7 | ||
Cloudlets 25 and 26(3) | ||||||||||
E1 | −16.208 | 123.792 | 83.28 | 83.25 | 0.30 | 1.519 | 1.577 | 35.9 | 0.06 ± 0.02(a) | 0.07 ± 0.01(a) |
E1 | −21.252 | 120.618 | 83.98 | 83.97 | 0.59 | 0.844 | 0.799 | 0.00 ± 0.01(b) | 0.15 ± 0.02(b) | |
E2 | −15.348 | 122.310 | 83.15 | 83.18 | 0.29 | 1.376 | 1.363 | 37.6 | (0.9 ± 0.2)(a) | (1.1 ± 0.1)(a) |
E2 | −21.334 | 119.999 | 83.94 | 83.93 | 0.73 | 0.591 | 0.554 | (0.0 ± 0.1)(b) | (2.3 ± 0.3) | |
E3 | −15.293 | 122.870 | 83.15 | 83.18 | 0.26 | 2.160 | 2.151 | 34.8 | ||
E3 | −21.352 | 121.319 | 83.94 | 83.91 | 0.72 | 0.691 | 0.674 | |||
Cloudlet 27 | ||||||||||
E1 | −102.322 | 92.561 | 84.24 | 84.21 | 0.27 | 0.550 | 0.572 | 9.8 | −0.04 ± 0.03 | 0.13 ± 0.03 |
E2 | −102.881 | 91.324 | 84.20 | 84.19 | 0.34 | 0.441 | 0.442 | 9.9 | (−0.6 ± 0.4) | (2.0 ± 0.5) |
E3 | −102.858 | 92.632 | 84.20 | 84.19 | 0.31 | 0.592 | 0.587 | 18.2 | ||
Cloudlet 28 | ||||||||||
E1 | 75.805 | −42.352 | 84.33 | 84.31 | 0.23 | 0.107 | 0.110 | 4.3 | 0.03 ± 0.03 | −0.35 ± 0.02 |
E2 | 76.201 | −47.031 | 84.29 | 84.27 | 0.24 | 0.127 | 0.128 | 2.1 | (0.5 ± 0.5) | (−5.3 ± 0.3) |
E3 | 76.554 | −46.609 | 84.29 | 84.30 | 0.23 | 0.138 | 0.138 | 2.4 | ||
Cloudlet 29 | ||||||||||
E1 | 77.392 | −51.483 | 84.86 | 84.83 | 0.42 | 0.838 | 0.848 | 25.1 | 0.03 ± 0.02 | −0.03 ± 0.01 |
E2 | 77.077 | −52.809 | 84.73 | 84.77 | 0.38 | 0.586 | 0.563 | 12.0 | (0.4 ± 0.3) | (−0.5 ± 0.1) |
E3 | 77.121 | −51.754 | 84.73 | 84.78 | 0.39 | 0.656 | 0.610 | 25.4 | ||
Cloudlet 30 | ||||||||||
E1 | 93.386 | −3.914 | 84.95 | 84.69 | 0.28 | 0.395 | 0.242 | 43.5 | 0.04 ± 0.05 | −0.12 ± 0.05 |
E1 | 84.93 | 0.12 | 0.400 | (0.5 ± 0.8) | (−1.8 ± 0.8) | |||||
E2 | 90.422 | 0.116 | 84.73 | 84.71 | 0.33 | 0.379 | 0.368 | 10.7 | ||
E3 | 90.266 | 1.301 | 84.73 | 84.71 | 0.32 | 0.418 | 0.401 | 20.4 | ||
Cloudlet 31 | ||||||||||
E1 | 92.768 | −6.569 | 85.56 | 84.84 | 0.91 | 0.821 | 0.351 | 20.7 | +0.12 ± 0.01 | −0.08 ± 0.01 |
E1 | 85.18 | 0.24 | 0.379 | (1.8 ± 0.1) | (−1.2 ± 0.1) | |||||
E1 | 85.52 | 0.30 | 0.733 | |||||||
E1 | 85.94 | 0.40 | 0.437 | |||||||
E1 | 86.47 | 0.58 | 0.253 | |||||||
E2 | 97.019 | −11.151 | 84.73 | 85.14 | 0.24 | 0.967 | 0.618 | 23.6 | ||
E2 | 84.74 | 0.51 | 0.921 | |||||||
E2 | 85.56 | 0.41 | 0.710 | |||||||
E2 | 85.97 | 0.33 | 0.532 | |||||||
E2 | 86.51 | 0.62 | 0.211 | |||||||
E3 | 97.693 | −10.776 | 84.73 | 84.74 | 0.47 | 1.268 | 1.220 | 26.8 | ||
E3 | 85.15 | 0.26 | 0.982 | |||||||
E3 | 85.57 | 0.39 | 0.932 | |||||||
E3 | 85.97 | 0.35 | 0.656 | |||||||
E3 | 86.45 | 0.41 | 0.381 | |||||||
Cloudlet 32 | ||||||||||
E1 | 13.707 | 103.628 | 86.26 | 86.29 | 0.15 | 1.174 | 0.500 | 42.4 | 0.08 ± 0.01 | 0.08 ± 0.01 |
E1 | 86.23 | 0.72 | 0.736 | (1.2 ± 0.1) | (1.2 ± 0.1) | |||||
E1 | 86.79 | 0.28 | 0.955 | |||||||
E2 | 13.988 | 102.790 | 86.31 | 85.98 | 0.29 | 0.844 | 0.428 | 32.0 | ||
E2 | 86.31 | 0.33 | 0.811 | |||||||
E2 | 86.71 | 0.34 | 0.613 | |||||||
E3 | 14.168 | 103.850 | 86.31 | 86.10 | 0.57 | 1.060 | 0.577 | 22.1 | ||
E3 | 86.35 | 0.25 | 0.663 | |||||||
E3 | 86.70 | 0.35 | 0.767 | |||||||
Cloudlet 33 | ||||||||||
E1 | −60.445 | 122.938 | 86.61 | 86.66 | 0.38 | 0.168 | 0.171 | 7.5 | −0.12 ± 0.03 | 0.16 ± 0.01 |
E2 | −60.806 | 122.658 | 86.75 | 86.72 | 0.36 | 0.180 | 0.181 | 12.9 | (−1.8 ± 0.4) | (2.5 ± 0.1) |
E3 | −61.147 | 123.733 | 86.75 | 86.76 | 0.31 | 0.242 | 0.239 | 14.7 | ||
Cloudlet 34 | ||||||||||
E1 | 11.305 | 117.839 | 87.67 | 87.64 | 0.25 | 0.433 | 0.428 | 11.5 | 0.11 ± 0.03 | 0.12 ± 0.01 |
E2 | 11.709 | 117.754 | 87.62 | 87.65 | 0.33 | 0.152 | 0.150 | 7.8 | (1.7 ± 0.4) | (1.8 ± 0.1) |
E3 | 11.855 | 118.634 | 87.72 | 87.66 | 0.33 | 0.220 | 0.213 | 15.8 |
Notes. (a) and (b) denote which values correspond to each other. Coordinates (ΔRA, ΔDec) arerelative to the motion centre as in Fig. 1. If possible, Gaussian velocity profiles are characterised by the velocity (Vfit), full width at half maximum (FWHM), and flux density (Sfit) of the maser cloudlet. The relative proper motion of cloudlets estimated by linear fitting are also listed (μRA, μDec). (1) Weaker Gaussian feature was used for proper motions. (2)Both Gaussian features were used for proper motions. (3)Both Gaussian features were used for proper motions.
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