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Table 3
Parameters of 22.2 GHz water and 6.7 GHz methanol maser clouds.
| Cloud | Sp | Sfit | Vfit | FWHM | Lproj | Vgrad | Tb | ||
| (mJy beam-1) | (mJy beam-1) | (km s-1) | (km s-1) | (mas) | (AU)i | (km s-1 mas-1) | (km s-1 AU-1)i | ( × 108 K) | |
|
|
|||||||||
| G31.581 + 00.077 | 22.2 GHz water masers | ||||||||
| 1 | 1008 | 969 | 102.9 | 0.54 | 0.17 | 0.93 | – | – | 10.4 |
| 2 | 233 | 221 | 101.8 | 0.58 | 0.07 | 0.38 | – | – | 2.4 |
| 3 | 472 | 444 | 100.3 | 0.61 | 0.47 | 2.58 | 1.3 | 0.24 | 4.9 |
| 4 | 16534 | – | – | – | 0.10 | 0.55 | 21.2 | 3.84 | 170.8 |
| 4_1 | – | 5302 | 100.2 | 0.50 | – | – | – | – | – |
| 4_2 | – | 14630 | 99.8 | 0.67 | – | – | – | – | – |
| 4_3 | – | 9445 | 99.3 | 0.50 | – | – | – | – | – |
| 5 | 2577 | – | – | – | 1.17 | 6.42 | 1.8 | 0.33 | 26.6 |
| 5_1 | – | 2137 | 97.8 | 0.93 | – | – | – | – | – |
| 5_2 | – | 1140 | 97.4 | 0.57 | – | – | – | – | – |
| 6 | 363 | 347 | 93.6 | 0.72 | 0.35 | 1.92 | 2.0 | 0.36 | 3.8 |
| 7 | 1000 | 1057 | 91.7 | 0.94 | 0.36 | 1.98 | – | – | 10.3 |
| 8 | 1333 | 1297 | 90.6 | 0.58 | 0.24 | 1.32 | – | – | 13.8 |
|
|
|||||||||
| 6.7 GHz methanol masers | |||||||||
| a | 1099 | 1223 | 99.6 | 0.39 | 5.8 | 31.84 | 0.09 | 0.016 | 3.4 |
| b∗ | 358 | – | – | – | – | – | – | – | 1.1 |
| c | 2045 | 2039 | 98.8 | 0.68 | 7.4 | 40.63 | 0.07 | 0.013 | 6.4 |
| d | 292 | 321 | 98.7 | 0.41 | 2.9 | 15.92 | 0.12 | 0.022 | 0.9 |
| e* | 493 | – | – | – | – | – | – | – | 1.5 |
| f | 376 | 386 | 98.4 | 0.39 | 1.6 | 8.78 | 0.23 | 0.042 | 1.2 |
| g* | 349 | – | – | – | – | – | – | – | 1.1 |
| h | 809 | 814 | 98.1 | 0.31 | 2.0 | 10.98 | 0.18 | 0.033 | 2.5 |
| i | 2722 | 2891 | 95.6 | 0.35 | 2.8 | 15.37 | 0.25 | 0.046 | 8.5 |
| j | 276 | 308 | 95.6 | 0.31 | 0.7 | 4 | 0.72 | 0.088 | 0.9 |
| k | 333 | 371 | 91.7 | 0.30 | 3.0 | 16.3 | 0.12 | 0.022 | 1.0 |
|
|
|||||||||
| G33.641−00.228 | 22.2 GHz water masers | ||||||||
| 1 | 174 | 177 | 58.1 | 0.25 | 0.11 | 0.42 | – | – | 1.8 |
| 2 | 606 | – | – | – | 0.16 | 0.60 | – | – | 6.3 |
| 2_1 | – | 326 | 57.3 | 0.50 | – | – | – | – | – |
| 2_2 | – | 328 | 57.3 | 0.08 | – | – | – | – | – |
| 3 | 157 | 158 | 56.3 | 0.88 | 0.27 | 1.02 | – | – | 1.6 |
| 4 | 263 | 263 | 54.8 | 0.34 | 0.08 | 0.30 | – | – | 2.7 |
| 5* | 118 | – | – | – | – | – | – | – | 1.2 |
| 6* | 217 | – | – | – | – | – | – | – | 2.2 |
|
|
|||||||||
| 6.7 GHz methanol masers | |||||||||
| a | 20690 | – | – | – | 6.7 | 25.26 | 0.20 | 0.053 | 64.8 |
| a_1 | – | 9670 | 62.9 | 0.49 | – | – | – | – | – |
| a_2 | – | 17826 | 62.6 | 0.22 | – | – | – | – | – |
| a_3 | – | 5038 | 62.3 | 0.23 | – | – | – | – | – |
| b | 1090 | 1124 | 63.1 | 0.3 | 3.3 | 12.44 | – | – | 3.4 |
| c | 893 | 811 | 62.2 | 0.6 | 9.0 | 33.93 | 0.07 | 0.019 | 2.8 |
| d | 365 | 358 | 61.9 | 0.4 | 5.8 | 21.87 | – | – | 1.1 |
| e** | 207 | – | – | – | 1.3 | 7.92 | – | – | 0.6 |
| f | 10447 | – | – | – | 7.5 | 28.28 | 0.07 | 0.019 | 32.7 |
| f_1 | – | 6913 | 61.0 | 0.19 | – | – | – | – | – |
| f_2 | – | 7184 | 60.8 | 0.33 | – | – | – | – | – |
| g** | 356 | – | – | – | 0.5 | 10.56 | – | – | 1.1 |
| h | 1672 | 1716 | 60.9 | 0.30 | 1.2 | 4.52 | – | – | 5.2 |
| i** | 2280 | – | – | – | 3.3 | 22.9 | – | – | 7.1 |
| j | 20402 | 21448 | 60.3 | 0.30 | 2.9 | 10.93 | 0.21 | 0.056 | 63.9 |
| k | 12260 | 12665 | 59.8 | 0.22 | 6.0 | 22.62 | 0.06 | 0.016 | 38.4 |
| l | 4105 | 4362 | 59.6 | 0.26 | 10.9 | 41.10 | – | – | 12.9 |
| n∗ | 109 | – | – | – | – | – | – | – | 0.3 |
| p∗ | 176 | – | – | – | – | – | – | – | 0.6 |
| r | 28300 | 29569 | 58.8 | 0.30 | 1.2 | 4.52 | – | – | 88.6 |
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