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Table 1

All 22 GHz water maser features in W75N for which linear and/or circular polarization was detected.

     (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (14)
Maser groupa RA Dec Peak flux VLSR ΔvL Pl χ ΔVib TbΔΩb PV B|| θc
offset offset Density(I)
(mas) (mas) (Jy beam-1) (km s-1) (km s-1) (%) (°) (km s-1) (log K sr) (x10-3) (mG) (°)
VLA 1.01 C –95.3612 –303.062 2.76 ± 0.13 10.7 0.38 2.3 ± 0.4  + 43.8 ± 8.3  −  −
VLA 1.02 C –94.2666 –300.461 3.39 ± 0.09 10.5 0.40 3.2 ± 0.5  + 26.4 ± 9.4  −  −
VLA 1.03 C –91.6984 –289.684 30.78 ± 0.19 11.3 0.39 5.1 ± 0.8  + 29 ± 1.6 7.8 106 ± 18
VLA 1.04 C –72.0367 –217.556 9.77 ± 0.13 10.7 0.46 3.9 ± 0.4  −43.0 ± 1.4 11.3  −212 ± 51
VLA 1.05 C –71.5315 –214.531 115.41 ± 0.12 10.6 0.44 1.7 ± 0.2  −56.1 ± 6.5 2.9  −54 ± 9
VLA 1.06 C –71.3210 –213.371 76.79 ± 0.12 10.8 0.46 1.5 ± 0.2  −59.3 ± 6.0 5.1  −115 ± 18
VLA 1.07 C –70.4789 –210.289 10.16 ± 0.12 11.1 0.45 1.4 ± 0.6  −53.9 ± 11.3 28.4 599 ± 100
VLA 1.08 C –69.5948 –206.944 158.28 ± 0.20 11.5 0.51 2.6 ± 0.1  −73.5 ± 5.0 2.8 65 ± 10
VLA 1.09 C –11.7886 –121.338 6.14 ± 0.06 10.4 0.33 1.1 ± 0.5  −87.2 ± 3.2  −  −
VLA 1.10 C –11.4097 –237.705 2.07 ± 0.20 11.4 0.51 2.5 ± 0.4  −77.9 ± 7.2  −  −
VLA 1.11 C –9.7679 –119.442 0.39 ± 0.03 10.3 0.51 2.7 ± 0.3  −56.1 ± 14.2  −  −
VLA 1.12d B –2.7366 –15.713 1.13 ± 0.03 12.8 0.38 19.4 ± 0.7  −86.2 ± 0.7  −  −
VLA 1.13d B –2.6945 –14.427 0.97 ± 0.03 12.8 0.40 12.4 ± 2.5  −50.0 ± 1.4  −  −
VLA 1.14d B –2.6945 1.568 80.02 ± 0.07 12.6 0.44 13.5 ± 0.7  −16.9 ± 0.6  −  −
VLA 1.15d B –0.5894 –36.270 63.25 ± 0.17 11.6 0.49 13.1 ± 1.9  −90.0 ± 3.6  −  −
VLA 1.16d B –0.4210 –35.545 111.47 ± 0.20 11.4 0.55 12.9 ± 1.2  −66.9 ± 0.6 11.3  −177 ± 27
VLA 1.17d B 0 0 2.96 ± 0.06 12.7 0.54 22.9 ± 5.1  −73.7 ± 3.3 1.1e 42.2 809 ± 182
VLA 1.18d B 8.2520 31.166 6.17 ± 0.06 12.4 0.52 22.0 ± 5.0  −89.7 ± 1.2 1.0e  −  −
VLA 1.19d B 8.2941 33.016 11.39 ± 0.07 12.6 0.53 25.7 ± 3.5  + 58.2 ± 7.7 0.9e 5.9  −92 ± 30
VLA 1.20 C 36.2920 –230.717 1.86 ± 0.02 8.1 0.33 2.7 ± 0.3  + 47.1 ± 2.9  −  −
VLA 1.21d B 57.6378 17.914 3.56 ± 0.15 11.2 0.44  −  −  −  − 25.8f  −398 ± 102e  −
VLA 1.22d B 84.3726 42.854 6.71 ± 0.05 9.8 0.43 0.9 ± 0.2  −20.6 ± 6.2  −  −
VLA 1.23 A 295.3883 281.223 39.41 ± 0.05 21.1 0.83 0.6 ± 0.1  −30.6 ± 8.5  −  −  −  −  −
VLA 1.24 A 332.4381 316.208 2.00 ± 0.04 21.7 0.68 1.9 ± 0.1  −31.8 ± 8.3  −  −  −  −  −
VLA 1.25 A 507.5828 121.956 1.33 ± 0.03 23.8 0.51 3.6 ± 0.3  −9.9 ± 7.6  −  −
VLA 2.01 – 571.4096 –488.743 1.69 ± 0.01 5.2 0.57  −  −  −  − 30.2f 567 ± 243e  −
VLA 2.02 – 571.9570 –487.320 2.82 ± 0.01 5.0 0.58  −  −  −  − 21.5f 413 ± 146e  −
VLA 2.03 – 587.4926 –621.986 12.0 ± 0.05 6.8 0.68 0.5 ± 0.1  −89.5 ± 52.7  −  −
VLA 2.04 – 602.6914 –611.675 6.86 ± 0.06 12.7 0.61 0.8 ± 0.3  + 82.8 ± 3.8  −  −  −  −  −
VLA 2.05 – 604.3755 –620.571 4.62 ± 0.12 10.9 0.50 1.5 ± 0.4  −80.6 ± 32.0  −  −
VLA 1.26 A 605.6807 212.257 20.73 ± 0.04 18.7 0.53 2.3 ± 0.1  −17.9 ± 2.0  −  −
VLA 2.06 – 625.2582 –454.392 25.44 ± 0.16 11.2 0.69 0.2 ± 0.1  −47.0 ± 16.6  −  −  −  −  −
VLA 2.07 – 676.4543 –432.327 1.95 ± 0.08 6.0 0.60 2.0 ± 0.3  + 47.7 ± 8.7  −  −
VLA 2.08 – 677.0438 –432.545 4.65 ± 0.01 6.2 0.59 1.1 ± 0.1  + 34.5 ± 3.1  −  −
VLA 2.09 – 690.0533 –439.411 30.29 ± 0.06 9.6 0.75 0.4 ± 0.1  −58.7 ± 9.1 3.9  −158 ± 36
VLA 2.10 – 690.7269 –440.163 48.76 ± 0.06 9.7 0.58 0.4 ± 0.1  −69.3 ± 9.0 6.2  −186 ± 31
VLA 2.11 – 697.1685 –459.564 13.99 ± 0.04 –1.1 0.86 1.0 ± 0.3  −39.2 ± 19.2  −  −  −  −  −
VLA 2.12 – 697.4212 –460.125 3.25 ± 0.01 –2.9 2.34 1.5 ± 0.6  −34.2 ± 12.1  −  −  −  −  −
VLA 2.13 – 697.8843 –458.710 7.16 ± 0.01 0.5 0.69 1.0 ± 0.2  −38.3 ± 7.5  −  −
VLA 2.14 – 698.6000 –445.961 62.39 ± 0.07 7.2 0.63 1.7 ± 0.2  −84.8 ± 1.2 1.1  −38 ± 13
VLA 2.15 – 698.9368 –461.704 49.20 ± 0.05 –0.7 0.87 2.0 ± 0.2  + 78.2 ± 36.9 3.4e  −  −
VLA 2.16 – 699.3157 –446.842 30.98 ± 0.05 6.8 0.58 1.3 ± 0.2  −75.4 ± 1.6 15.6 470 ± 73
VLA 2.17 – 701.5051 –448.017 12.73 ± 0.05 8.3 0.53 2.5 ± 0.5  −71.7 ± 1.7 16.1 425 ± 76
VLA 2.18 – 702.3892 –449.426 4.32 ± 0.03 9.3 0.82 1.2 ± 0.1  −76.9 ± 4.4  −  −  −  −  −
VLA 2.19 – 703.4839 –451.126 39.57 ± 0.17 11.6 0.78 2.6 ± 0.3  −72.6 ± 3.7  −  −  −  −  −
VLA 2.20 – 703.8628 –451.496 72.56 ± 0.16 11.2 1.09 2.0 ± 0.3  −65.1 ± 3.9  −  −
VLA 2.21 – 705.5048 –458.549 2.48 ± 0.01 0.2 0.53 1.4 ± 0.3  −8.7 ± 5.2  −  −
VLA 2.22 – 709.9675 –458.458 4.02 ± 0.01 5.0 0.56 0.8 ± 0.1  −8.0 ± 4.4 20.8 957 ± 239
VLA 2.23 – 710.3886 –459.141 1.34 ± 0.01 4.9 0.80 2.1 ± 0.1  −53.5 ± 5.5  −  −
VLA 2.24 – 711.0201 –457.901 198.45 ± 0.20 8.7 0.51 0.7 ± 0.1  −72.0 ± 6.2 6.1 160 ± 24
VLA 2.25 – 713.0410 –466.595 16.74 ± 0.02 13.7 0.60 0.8 ± 0.1  −44.5 ± 2.1  −  −
VLA 2.26 – 716.0303 –475.323 53.72 ± 0.06 –7.7 0.68 1.2 ± 0.5  −89.6 ± 61.8 2.1 79 ± 18
VLA 2.27 – 777.7941 –447.278 0.67 ± 0.06 –7.7 0.66 6.1 ± 0.1  −87.7 ± 6.5  −  −

Notes. 

(a)

The water masers associated with VLA 1 are divided in three groups according to their positions (see Sect. 4.1).

(b)

The best-fitting results obtained by using a model based on the radiative transfer theory of water masers (Vlemmings et al. 2006, 2010) for Γ + Γν = 1. The errors were determined by analysing the full probability distribution function. For T ~ 400 K (Γν = 2) and T ~ 2500 K (Γν = 13) TbΔΩ has to be adjusted by adding +0.48 and +1.15, respectively (Nedoluha & Watson 1992; Anderson & Watson 1993).

(c)

The angle between the magnetic field and the maser propagation direction is determined by using the observed Pl and the fitted emerging brightness temperature.The errors were determined by analysing the full probability distribution function.

(d)

Because of the degree of the saturation of these water masers TbΔΩ is underestimated, ΔVi and θ are overestimated.

(e)

The constraint fit did not allow us to evaluate the error bars properly.

(f)

In the fitting model we include the values for TbΔΩ and ΔVi of the closest features.

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