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Table 1

All 6.7-GHz methanol maser features detected in W51–e2.

     (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12)
Maser RAa Deca Peak flux Vlsr ΔvL Pl χ ΔVib TbΔΩb ΔVZc θd
offset offset density(#I)
(mas) (mas) (Jy/beam) (km s-1) (km s-1) (%) (°) (km s-1) (log K sr) (m/s) (°)
W51E.01 –791.826 –357.414 0.78 ± 0.02 51.54 0.24  −  −  −  −  −  −
W51E.02 –741.361 313.950 0.24 ± 0.01 53.03 0.22  −  −  −  −  −  −
W51E.03 –396.633 –535.208 2.31 ± 0.02 51.45 0.42  −  −  −  −  −  −
W51E.04 –368.770 –501.720 0.47 ± 0.01 52.42 0.22  −  −  −  −  −  −
W51E.05 –202.860 –304.199 1.11 ± 0.04 51.10 0.33  −  −  −  −  −  −
W51E.06 –198.317 –300.964 9.73 ± 0.04 51.80 0.27 1.6 ± 0.2 40 ± 12  −
W51E.07 –193.719 –310.570 5.45 ± 0.03 52.15 0.27 2.2 ± 0.3 35 ± 49  −
W51E.08 –185.520 –311.840 0.13 ± 0.01 52.94 0.33  −  −  −  −  −  −
W51E.09 –116.608 558.552 3.84 ± 0.16 59.35 0.21  −  −  −  −  −  −
W51E.10 –20.773 16.247 2.05 ± 0.06 60.14 0.17  −  −  −  −  −  −
W51E.11 –16.176 160.938 2.02 ± 0.05 59.88 0.25  −  −  −  −  −  −
W51E.12 –7.368 –65.472 22.72 ± 0.03 58.30 0.27 2.6 ± 0.6 20 ± 6  −
W51E.13 –2.936 –65.970 65.78 ± 0.20 57.86 0.36 1.8 ± 0.4 21 ± 5  −0.4 ± 0.1
W51E.14 0 0 217.32 ± 0.23 59.26 0.33 1.4 ± 0.8 46 ± 9  −0.7 ± 0.1
W51E.15 0.443 12.135 26.63 ± 0.07 59.00 0.25 1.4 ± 0.4 29 ± 18  −
W51E.16 0.831 –76.960 2.28 ± 0.03 58.39 0.27  −  −  −  −  −  −
W51E.17 1.219 –14.587 50.54 ± 0.05 59.97 0.38 1.9 ± 0.4 35 ± 15  −
W51E.18 4.819 9.281 27.56 ± 0.16 59.35 0.28 1.2 ± 0.2  −2 ± 32  −  −  −2.4 ± 0.1  −
W51E.19 10.581 38.508 4.09 ± 0.05 59.97 0.27 1.5 ± 1.2 52 ± 17  −
W51E.20 11.412 –24.912 2.94 ± 0.05 60.05 0.25  −  −  −  −  −  −
W51E.21 27.975 –43.551 3.15 ± 0.01 60.32 0.23 2.3 ± 1.6 39 ± 46  −  −  −  −
W51E.22 56.393 –143.511 2.09 ± 0.04 58.91 0.19  −  −  −  −  −  −
W51E.23 67.250 –145.042 15.37 ± 0.05 58.74 0.28 2.0 ± 0.5 29 ± 11  −
W51E.24 69.300 –158.505 9.48 ± 0.07 59.00 0.30 4.0 ± 1.6 31 ± 6  −
W51E.25 70.851 –154.001 8.19 ± 0.03 58.82 0.26 2.5 ± 1.1 26 ± 8  −
W51E.26 168.514 –12.121 4.27 ± 0.03 58.56 0.51  −  −  −  −  −  −
W51E.27 196.655 99.159 1.82 ± 0.05 59.80 0.23  −  −  −  −  −  −
W51E.28 204.632 113.516 5.67 ± 0.02 60.58 0.34 2.9 ± 0.6 19 ± 8  −  −  −  −
W51E.29 262.520 43.556 2.26 ± 0.07 58.91 0.29  −  −  −  −  −  −
W51E.30 268.004 38.809 1.99 ± 0.03 58.82 0.27  −  −  −  −  −  −
W51E.31 271.716 40.205 3.30 ± 0.03 58.47 0.40 3.5 ± 1.1 63 ± 5  −
W51E.32 276.535 31.513 8.11 ± 0.06 57.86 0.48 1.6 ± 0.5 32 ± 23  −2.7 ± 0.1
W51E.33 616.831 909.365 0.57 ± 0.07 51.01 0.25  −  −  −  −  −  −
W51E.34 620.709 902.697 0.66 ± 0.02 50.04 0.40  −  −  −  −  −  −
W51E.35 661.979 343.477 0.62 ± 0.03 58.47 0.22  −  −  −  −  −  −
W51E.36 909.542 98.515 0.69 ± 0.03 58.82 0.28  −  −  −  −  −  −
W51E.37 923.834 88.762 1.29 ± 0.04 58.47 0.30  −  −  −  −  −  −

Notes. 

(a)

The reference position is α2000 = 19h23m43s.942 and .

(b)

The best-fitting results obtained by using a model based on the radiative transfer theory of methanol masers for Γ + Γν = 1 (Vlemmings et al. 2010; Surcis et al. 2011b). The errors were determined by analyzing the full probability distribution function.

(c)

The Zeeman-splittings are determined from the cross-correlation between the RR and LL spectra.

(d)

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 analyzing the full probability distribution function.

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