Table D.1
Parameters of the 22-GHz H2O maser features detected in W3(OH).
| (1) | (2) | (3) | (4) | (5) | (6) | (7) | (8) | (9) | (10) | (11) | (12) | (13) |
| ID | RAa | Deca | Peak flux | V lsr | ΔvL | P l | χ | ΔVi b | TbΔΩ b | P V | B l.o.s. | θ c |
| offset | offset | density (I) | ||||||||||
| (arcsec) | (arcsec) | (Jy/beam) | (km s-1) | (km s-1) | (%) | (°) | (km s-1) | (log K sr) | (%) | (mG) | (°) | |
|
|
||||||||||||
| Cluster “d” | ||||||||||||
| 001 | 0.0897 | −0.2034 | 0.1 | −46.26 | 0.91 | − | − | − | − | − | − | − |
| 002 | 0.0584 | −0.2000 | 0.06 | −46.47 | 0.92 | − | − | − | − | − | − | − |
| 003 | 0.0523 | −0.0694 | 0.8 | −45.63 | 1.29 | − | − | − | − | − | − | − |
| 004 | 0.0410 | −0.1185 | 2.9 | −46.47 | 0.86 | − | − | − | − | − | − | − |
| 005 | 0.0397 | −0.0348 | 200.2 | −49.84 | 0.69 | 17.7 ± 3.5 | 79 ± 3 |
|
|
− | − |
|
| 006 | 0.0393 | −0.0338 | 1.7 | −50.48 | 0.87 | − | − | − | − | − | − | − |
| 007 | 0.0378 | −0.0967 | 1.5 | −47.32 | 0.87 | − | − | − | − | − | − | − |
| 008 | 0.0276 | −0.0182 | 7.2 | −49.52 | 0.93 | 42 ± 19 | −60 ± 7 |
|
|
− | − |
|
| 009 | 0.0256 | −0.0462 | 27.3 | −48.16 | 0.89 | − | − | − | − | − | − | − |
| 010 | 0.0247 | −0.0453 | 6.4 | −48.58 | 1.03 | 19.3 ± 6.5 | −72 ± 5 |
|
|
− | − |
|
| 011 | 0.0214 | −0.1055 | 204.7 | −48.79 | 0.98 | 10.2 ± 1.2 | + 63 ± 7 |
|
|
− | − |
|
| 012 | 0.0205 | −0.1066 | 80.4 | −48.37 | 0.91 | 19.2 ± 6.5 | + 57 ± 16 |
|
|
0.2 | −70 ± 13 |
|
| 013 | 0.0198 | −0.1077 | 23.5 | −46.47 | 0.83 | 3.6 ± 0.7 | + 82 ± 2 |
|
|
− | − |
|
| 014 | 0.0129 | −0.0292 | 3.1 | −47.74 | 0.85 | − | − | − | − | − | − | − |
| 015 | 0.0078 | −0.0455 | 5.9 | −47.95 | 0.67 | − | − | − | − | − | − | − |
| 016 | 0.0022 | −0.0199 | 145.1 | −48.16 | 0.75 | 35.8 ± 1.7 | + 60 ± 1 |
|
|
− | − |
|
| 017 | 0.0021 | −0.0199 | 0.2 | −50.90 | 3.11 | − | − | − | − | − | − | − |
| 018 | 0.0000 | 0.0000 | 2050.3 | −48.58 | 0.95 | 15.0 ± 2.7 | + 6 ± 10 |
|
|
0.2 | + 59 ± 9 |
|
| 019 | −0.0034 | 0.0013 | 60.1 | −49.21 | 0.72 | 25.4 ± 3.0 | −35 ± 2 |
|
|
0.4 | −120 ± 20 |
|
| 020 | −0.0355 | 0.0627 | 10.0 | −49.42 | 0.54 | 36.1 ± 3.3 | −37 ± 1 |
|
|
− | − |
|
| 021 | −0.1391 | −0.1918 | 34.2 | −50.48 | 0.58 | 15.4 ± 1.0 | −11 ± 69 |
|
|
− | − |
|
| 022 | −0.2376 | −0.1840 | 6.8 | −47.95 | 1.43 | − | − | − | − | − | − | − |
| 023 | −0.2407 | −0.1861 | 0.3 | −47.11 | 0.81 | − | − | − | − | − | − | − |
| 024 | −0.2489 | −0.2023 | 1.0 | −59.95 | 0.73 | − | − | − | − | − | − | − |
| 025 | −0.2590 | −0.2059 | 1.6 | −60.16 | 0.81 | − | − | − | − | − | − | − |
| 026 | −0.2598 | −0.2051 | 0.2 | −59.11 | 0.61 | − | − | − | − | − | − | − |
| 027 | −0.2615 | −0.2054 | 0.3 | −59.74 | 0.76 | − | − | − | − | − | − | − |
| 028 | −0.2625 | −0.2049 | 0.08 | −58.90 | 0.70 | − | − | − | − | − | − | − |
| 029 | −0.6072 | 0.0486 | 1.8 | −43.95 | 0.53 | − | − | − | − | − | − | − |
| 030 | −0.6344 | 0.0427 | 0.1 | −54.06 | 1.13 | − | − | − | − | − | − | − |
| 031 | −0.6354 | 0.0438 | 5.8 | −58.90 | 0.89 | − | − | − | − | − | − | − |
| 032 | −0.6358 | 0.0461 | 9.2 | −56.16 | 0.71 | 1.7 ± 0.2 | + 62 ± 3 |
|
|
− | − |
|
| 033 | −0.6366 | 0.0439 | 3.4 | −58.90 | 0.82 | − | − | − | − | − | − | − |
| 034 | −0.6371 | 0.0439 | 7.0 | −59.32 | 0.79 | − | − | − | − | − | − | − |
| 035 | −0.6380 | 0.0438 | 1.9 | −59.32 | 0.73 | − | − | − | − | − | − | − |
| 036 | −0.6416 | 0.0537 | 9.0 | −51.53 | 0.76 | 6.6 ± 1.2 | + 69 ± 1 |
|
|
0.8 | −356 ± 107 |
|
| 037 | −0.6425 | 0.0542 | 71.8 | −51.74 | 0.61 | 1.4 ± 0.1 | + 69 ± 1 |
|
|
0.3 | −60 ± 11 |
|
| 038 | −0.6428 | 0.0476 | 1.6 | −60.58 | 0.87 | − | − | − | − | − | − | − |
| 039 | −0.6433 | 0.0546 | 4.8 | −51.53 | 0.68 | 11.8 ± 3.0 | + 88 ± 1 |
|
|
1.6 | + 411 ± 114 |
|
| 040 | −0.6437 | 0.0498 | 0.7 | −55.32 | 0.77 | − | − | − | − | − | − | − |
| 041 | −0.6453 | 0.0501 | 0.7 | −55.74 | 0.70 | − | − | − | − | − | − | − |
| 042 | −0.6515 | 0.0535 | 0.2 | −54.27 | 0.84 | − | − | − | − | − | − | − |
| Cluster “a” | ||||||||||||
| 043 | −0.6520 | 0.0590 | 28.0 | −51.53 | 0.64 | 0.9 ± 0.1 | + 69 ± 4 |
|
|
− | − |
|
| 044 | −0.6622 | 0.0630 | 2.3 | −52.16 | 0.53 | − | − | − | − | − | − | − |
| 045 | −0.6633 | 0.0633 | 2.4 | −52.58 | 0.53 | − | − | − | − | − | − | − |
| 046 | −0.6643 | 0.0624 | 0.9 | −53.42 | 0.56 | − | − | − | − | − | − | − |
| 047 | −0.6650 | 0.0621 | 2.2 | −53.21 | 1.06 | − | − | − | − | − | − | − |
| 048 | −0.6650 | 0.0636 | 3.9 | −53.00 | 0.50 | − | − | − | − | − | − | − |
| 049 | −0.666 | 0.0624 | 5.3 | −53.63 | 0.56 | − | − | − | − | − | − | − |
| 050 | −0.6665 | 0.0647 | 11.5 | −53.00 | 0.56 | 1.2 ± 0.1 | + 65 ± 1 |
|
|
− | − |
|
| 051 | −0.6667 | 0.0648 | 11.0 | −53.00 | 0.54 | 1.3 ± 0.1 | + 63 ± 1 |
|
|
0.4 | −84 ± 35 |
|
| 052 | −0.6676 | 0.0649 | 4.1 | −53.00 | 0.67 | − | − | − | − | − | − | − |
| 053 | −0.7339 | −0.1245 | 0.5 | −50.69 | 0.88 | − | − | − | − | − | − | − |
| 054 | −0.7948 | −0.1137 | 0.3 | −58.69 | 0.70 | − | − | − | − | − | − | − |
| 055 | −0.7976 | −0.1132 | 0.6 | −58.48 | 0.74 | − | − | − | − | − | − | − |
| 056 | −0.8079 | −0.0662 | 12.0 | −60.58 | 0.84 | − | − | − | − | − | − | − |
| 057 | −0.8112 | −0.0680 | 60.9 | −57.22 | 0.61 | 6.0 ± 0.5 | −81 ± 46 |
|
|
− | − |
|
| 058 | −0.8128 | −0.0679 | 1.0 | −57.21 | 0.98 | 42.3 ± 8.2 | + 86 ± 1 |
|
|
− | − |
|
| 059 | −0.8129 | −0.0678 | 1.0 | −57.22 | 0.98 | − | − | − | − | − | − | − |
| 060 | −0.8169 | −0.0628 | 1.8 | −48.37 | 1.20 | 22.3 ± 4.0 | + 63 ± 3 |
|
|
− | − |
|
| 061 | −0.8170 | −0.0629 | 1.3 | −49.63 | 2.12 | − | − | − | − | − | − | − |
| 062 | −0.8172 | −0.0692 | 1.3 | −57.00 | 0.57 | − | − | − | − | − | − | − |
| 063 | −0.8182 | −0.0701 | 5.8 | −57.00 | 0.61 | 2.4 ± 0.6 | −65 ± 3 |
|
|
0.9 | + 360 ± 120 |
|
| 064 | −0.8199 | −0.0643 | 1.7 | −56.58 | 1.33 | − | − | − | − | − | − | − |
| 065 | −0.8206 | −0.0643 | 1.0 | −49.84 | 3.31 | − | − | − | − | − | − | − |
| 066 | −0.8213 | −0.0644 | 1.1 | −47.32 | 1.86 | − | − | − | − | − | − | − |
| 067 | −0.8227 | −0.0011 | 1.7 | −56.37 | 0.63 | − | − | − | − | − | − | − |
| 068 | −0.8247 | −0.0706 | 0.4 | −56.79 | 0.56 | − | − | − | − | − | − | − |
| 069 | −0.8259 | −0.0003 | 4.0 | −50.27 | 1.05 | 5.0 ± 0.1 | −66 ± 2 |
|
|
− | − |
|
| 070 | −0.8261 | −0.0706 | 0.8 | −55.95 | 1.24 | − | − | − | − | − | − | − |
| 071 | −0.8275 | −0.0689 | 1.8 | −52.37 | 0.71 | − | − | − | − | − | − | − |
| 072 | −0.8278 | −0.0714 | 0.8 | −55.95 | 0.74 | − | − | − | − | − | − | − |
| 073 | −0.8284 | −0.0713 | 1.5 | −55.95 | 0.75 | − | − | − | − | − | − | − |
| 074 | −0.8323 | −0.0709 | 0.08 | −54.69 | 0.73 | − | − | − | − | − | − | − |
| 075 | −0.8370 | −0.0709 | 0.2 | −54.90 | 1.14 | − | − | − | − | − | − | − |
| 076 | −0.8405 | −0.0019 | 0.8 | −43.53 | 0.68 | − | − | − | − | − | − | − |
| 077 | −0.8435 | −0.0021 | 1.2 | −56.58 | 0.67 | − | − | − | − | − | − | − |
| 078 | −0.8440 | −0.0015 | 0.6 | −55.53 | 1.10 | − | − | − | − | − | − | − |
| 079 | −0.8443 | −0.0025 | 3.6 | −56.58 | 0.93 | − | − | − | − | − | − | − |
| 080 | −0.8450 | −0.0040 | 0.9 | −58.69 | 0.70 | − | − | − | − | − | − | − |
| 081 | −0.8458 | −0.0756 | 0.7 | −55.32 | 0.74 | − | − | − | − | − | − | − |
| 082 | −0.8474 | −0.0754 | 0.09 | −59.11 | 0.83 | − | − | − | − | − | − | − |
| 083 | −0.8499 | −0.0748 | 0.2 | −59.74 | 0.65 | − | − | − | − | − | − | − |
| 084 | −0.8684 | −0.0666 | 1.6 | −60.58 | 1.16 | − | − | − | − | − | − | − |
| 085 | −0.9286 | −0.0048 | 0.07 | −55.74 | 0.68 | − | − | − | − | − | − | − |
| 086 | −0.9455 | −0.0023 | 1.6 | −56.79 | 0.70 | − | − | − | − | − | − | − |
| 087 | −0.9481 | −0.0027 | 0.5 | −57.85 | 1.40 | − | − | − | − | − | − | − |
| 088 | −0.9491 | 0.0122 | 0.3 | −55.11 | 0.70 | − | − | − | − | − | − | − |
| 089 | −0.9501 | 0.0130 | 3.1 | −53.85 | 0.63 | − | − | − | − | − | − | − |
| 090 | −0.9513 | 0.0132 | 0.5 | −54.48 | 0.66 | − | − | − | − | − | − | − |
| 091 | −0.9540 | 0.0152 | 6.5 | −50.48 | 0.69 | − | − | − | − | − | − | − |
| 092 | −0.9560 | 0.0151 | 15.7 | −53.85 | 1.90 | 1.4 ± 0.1 | + 69 ± 2 |
|
|
− | − |
|
| 093 | −0.9563 | 0.0154 | 7.6 | −52.37 | 2.00 | − | − | − | − | − | − | − |
| 094 | −0.9565 | −0.0485 | 0.2 | −55.53 | 0.81 | − | − | − | − | − | − | − |
| 095 | −0.9568 | −0.0484 | 1.1 | −57.85 | 0.95 | − | − | − | − | − | − | − |
| 096 | −0.9571 | −0.0479 | 0.9 | −57.85 | 0.63 | − | − | − | − | − | − | − |
| 097 | −0.9574 | −0.0480 | 0.04 | −55.74 | 0.52 | − | − | − | − | − | − | − |
| 098 | −0.9578 | 0.0139 | 2.4 | −43.10 | 0.80 | − | − | − | − | − | − | − |
| 099 | −0.9582 | 0.0140 | 2.5 | −43.32 | 0.92 | − | − | − | − | − | − | − |
| 100 | −0.9591 | 0.0141 | 3.1 | −43.74 | 0.90 | − | − | − | − | − | − | − |
| 101 | −0.9595 | 0.0142 | 4.7 | −44.79 | 1.08 | − | − | − | − | − | − | − |
| 102 | −0.9596 | 0.0135 | 1.2 | −58.06 | 1.02 | − | − | − | − | − | − | − |
| 103 | −0.9603 | 0.0162 | 0.6 | −51.32 | 0.58 | − | − | − | − | − | − | − |
| 104 | −0.9606 | 0.0145 | 24.2 | −45.21 | 0.76 | 0.9 ± 0.1 | + 69 ± 1 |
|
|
0.6 | + 169 ± 34 |
|
| 105 | −0.9611 | 0.0156 | 17.2 | −53.85 | 0.81 | 1.5 ± 0.1 | + 86 ± 7 |
|
|
0.5 | + 161 ± 41 |
|
| 106 | −0.9615 | 0.0149 | 4.5 | −45.63 | 0.78 | − | − | − | − | − | − | − |
| 107 | −0.9620 | 0.0167 | 5.5 | −51.74 | 0.77 | − | − | − | − | − | − | − |
| 108 | −0.9627 | 0.0157 | 0.2 | −46.90 | 0.65 | − | − | − | − | − | − | − |
| 109 | −0.9628 | 0.0158 | 7.7 | −49.84 | 0.82 | − | − | − | − | − | − | − |
| 110 | −0.9632 | 0.0139 | 0.3 | −42.89 | 0.95 | − | − | − | − | − | − | − |
| 111 | −0.9632 | 0.0168 | 2.6 | −51.32 | 1.00 | − | − | − | − | − | − | − |
| 112 | −0.9701 | 0.0137 | 5.7 | −59.32 | 1.61 | − | − | − | − | − | − | − |
| 113 | −0.9703 | 0.0141 | 0.1 | −56.58 | 2.00 | − | − | − | − | − | − | − |
| 114 | −0.9726 | 0.0516 | 0.03 | −39.74 | 0.94 | − | − | − | − | − | − | − |
| 115 | −0.9738 | 0.0125 | 0.5 | −51.32 | 0.65 | − | − | − | − | − | − | − |
| 116 | −0.9746 | 0.0136 | 0.8 | −60.16 | 2.13 | − | − | − | − | − | − | − |
| 117 | −0.9815 | −0.0441 | 0.8 | −60.16 | 0.64 | − | − | − | − | − | − | − |
| 118 | −0.9816 | −0.0441 | 0.7 | −60.16 | 0.62 | − | − | − | − | − | − | − |
| 119 | −0.9849 | −0.0415 | 0.2 | −58.48 | 1.12 | − | − | − | − | − | − | − |
| Cluster “e” | ||||||||||||
| 120 | −1.1899 | −0.3140 | 0.5 | −50.90 | 0.49 | − | − | − | − | − | − | − |
| 121 | −1.1933 | −0.3141 | 7.8 | −50.90 | 0.60 | 2.1 ± 0.1 | + 52 ± 1 |
|
|
− | − |
|
| 122 | −1.2056 | −0.2854 | 0.4 | −51.32 | 0.51 | − | − | − | − | − | − | − |
| Cluster “b” | ||||||||||||
| 123 | −1.4045 | 0.1428 | 5.5 | −51.11 | 0.48 | 8.0 ± 1.5 | + 37 ± 7 |
|
|
− | − |
|
| 124 | −1.4384 | 0.1261 | 1.8 | −46.90 | 0.58 | − | − | − | − | − | − | − |
| 125 | −1.4432 | 0.1242 | 5.6 | −44.16 | 0.66 | − | − | − | − | − | − | − |
| 126 | −1.4908 | 0.1022 | 0.3 | −48.79 | 1.64 | − | − | − | − | − | − | − |
| 127 | −1.5437 | 0.0778 | 0.3 | −51.11 | 0.67 | − | − | − | − | − | − | − |
| 128 | −1.7615 | 0.1491 | 2.1 | −53.63 | 0.69 | 6.4 ± 1.0 | −55 ± 10 |
|
|
− | − |
|
| 129 | −1.7825 | 0.1442 | 0.2 | −54.27 | 0.59 | − | − | − | − | − | − | − |
| Cluster “c” | ||||||||||||
| 130 | −2.0157 | −0.2032 | 0.6 | −51.11 | 0.76 | − | − | − | − | − | − | − |
| 131 | −2.0164 | −0.2007 | 26.1 | −49.63 | 1.39 | 2.6 ± 2.0 | + 86 ± 3 |
|
|
− | − |
|
| 132 | −2.0169 | −0.2007 | 27.1 | −48.37 | 1.17 | 2.6 ± 0.7 | −87 ± 8 |
|
|
− | − |
|
| 133 | −2.0177 | −0.2009 | 0.6 | −51.53 | 1.26 | − | − | − | − | − | − | − |
| 134 | −2.0178 | −0.2009 | 7.6 | −49.00 | 1.45 | 5.0 ± 1.5 | + 86 ± 9 |
|
|
− | − |
|
| 135 | −2.0179 | −0.2005 | 0.8 | −45.00 | 1.04 | − | − | − | − | − | − | − |
| 136 | −2.0187 | −0.1970 | 0.2 | −41.00 | 0.79 | − | − | − | − | − | − | − |
| 137 | −2.0449 | −0.1574 | 7.2 | −45.21 | 0.50 | 3.3 ± 0.5 | −24 ± 1 |
|
|
− | − |
|
| 138 | −2.0645 | 0.2090 | 4.6 | −41.84 | 0.58 | − | − | − | − | − | − | − |
| 139 | −2.0706 | 0.1342 | 0.6 | −41.21 | 0.61 | − | − | − | − | − | − | − |
| 140 | −2.0724 | 0.1375 | 13.2 | −36.79 | 0.89 | 1.4 ± 0.1 | + 80 ± 5 |
|
|
− | − |
|
| 141 | −2.0853 | −0.2909 | 0.5 | −50.48 | 1.83 | − | − | − | − | − | − | − |
| 142 | −2.0873 | −0.3049 | 5.5 | −47.32 | 0.62 | − | − | − | − | − | − | − |
| 143 | −2.0875 | −0.3067 | 0.1 | −46.26 | 0.95 | − | − | − | − | − | − | − |
| 144 | −2.1038 | 0.2021 | 1.0 | −43.95 | 0.96 | − | − | − | − | − | − | − |
| 145 | −2.1099 | 0.1926 | 0.4 | −42.68 | 0.59 | − | − | − | − | − | − | − |
| 146 | −2.0152 | −0.2030 | 0.3 | −51.95 | 1.28 | − | − | − | − | − | − | − |
| 147 | −2.1208 | −0.2892 | 3.8 | −47.74 | 0.84 | − | − | − | − | − | − | − |
| 148 | −2.1228 | −0.2879 | 0.9 | −47.11 | 0.66 | − | − | − | − | − | − | − |
Notes. The number ID of the detected maser features is reported in Col. 1. The positions, Cols. 2 and 3, refer to the brightest H2O maser feature 018 that was used to self-calibrate the data. The peak flux density (I), the LSR velocity (Vlsr), and the FWHM (ΔvL) of the total intensity spectra of the maser features are reported in Cols. 4, 5, and 6, respectively; I, VLSR, and ΔvL are obtained using a Gaussian fit. The mean linear polarization fraction, Pl, and the mean linear polarization angles, χ, are instead reported in Cols. 7 and 8, respectively. We determined Pl and χ of each H2O maser feature by considering (more than two) consecutive channels across the total intensity spectrum for which the polarized intensity is ≥ 5σ. In Col. 9 we report the intrinsic thermal linewidth of the maser ΔVi. In Col. 10 we report the emerging brightness temperature TbΔΩ, which is the product of the brightness temperature Tb and the solid angle of the maser beam ΔΩ.
The reference position is assumed to be α2000 = 2h27m04s.8362 and δ2000 = 61°52′24.′′607 (an additional offset of Δx = −10 mas, Δy = + 33 mas is also assumed in the absolute astrometry; see Appendix B).
The best-fitting results obtained by using a model based on the radiative transfer theory of water masers (Vlemmings 2006; Surcis et al. 2011a). The errors were determined by analyzing the full probability distribution function.
The angle θ between the magnetic field and the maser propagation direction is determined by using the observed Pl and the fitted TbΔΩ. The errors were determined by analyzing the full probability distribution function. We use boldface for values for which the magnetic field is more likely parallel to χ.
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