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Table 3:

Parameters of VLBA 1.665 GHz hydroxyl maser features.

Feature 		$V_{\rm LSR}$ $F_{\rm peak}$   $\Delta x$ $\Delta y$   $\Delta V_{\rm z}$a $B_{\rm z}$
  (km s-1) (Jy beam-1)   (mas) (mas)   (km s-1) (mG)
  RCP LCP RCP LCP            
1 70.88 71.76 2.39 0.40   0 0   -0.86 -1.5
2 67.89 ... 2.02 ...   $ -210.26 \pm 1.07 $ $ 178.74 \pm 0.77 $   ... ...
3 66.84 66.84 1.36 0.84   $ 14.24 \pm 0.62 $ $ 18.87 \pm 0.77 $   ... ...
4 73.87 73.87 1.01 0.16   $ -251.52 \pm 0.78 $ $ 88.39 \pm 1.47 $   ... ...
5 ... 74.75 ... 0.97   $ -385.08 \pm 1.46 $ $ 203.14 \pm 1.00 $   ... ...
6 ... 70.57 ... 0.89   $ 199.12 \pm 1.45 $ $ 174.08 \pm 1.13 $   ... ...
7 68.07 ... 0.74 ...   $ -185.97 \pm 0.67 $ $ 191.75 \pm 1.29 $   ... ...
8 72.99 72.99 0.67 0.26   $ 57.29 \pm 0.71 $ $ 119.21 \pm 0.94 $   ... ...
9 ... 75.10 ... 0.60   $ -297.88 \pm 1.46 $ $ 130.40 \pm 1.14 $   ... ...
10 74.92 ... 0.55 ...   $ -358.64 \pm 1.31 $ $ -170.67 \pm 1.14 $   ... ...
11 70.35 69.82 0.52 0.23   $ 56.12 \pm 0.94 $ $ 114.09 \pm 1.10 $   +0.62 +1.0
12 67.19 ... 0.46 ...   $ 45.90 \pm 0.66 $ $ 111.93 \pm 0.98 $   ... ...
13 76.33 79.67 0.25 0.43   $ -223.40 \pm 1.45 $ $ 71.08 \pm 1.20 $   -3.41 -5.8
14 ... 76.33 ... 0.41   $ 366.46 \pm 1.57 $ $ -149.68 \pm 1.13 $   ... ...
15 68.77 ... 0.38 ...   $ 52.32 \pm 2.18 $ $ 113.99 \pm 1.27 $   ... ...
16 ... 63.50 ... 0.31   $ 32.32 \pm 1.56 $ $ 108.87 \pm 1.73 $   ... ...
17 64.90 ... 0.30 ...   $ 39.23 \pm 1.10 $ $ 111.08 \pm 1.12 $   ... ...
18 70.18 ... 0.25 ...   $ 192.37 \pm 1.33 $ $ 175.05 \pm 1.53 $   ... ...
19 79.32 77.21 0.25 0.17   $ -321.93 \pm 0.90 $ $ 130.00 \pm 2.23 $   +2.11 +3.6
20 64.55 65.08 0.23 0.13   $ 37.16 \pm 0.92 $ $ 108.63 \pm 1.33 $   -0.49 -0.8
21 66.84 ... 0.22 ...   $ -134.66 \pm 0.91 $ $ 147.73 \pm 1.29 $   ... ...
22 62.62 62.79 0.16 0.20   $ 26.50 \pm 1.98 $ $ 106.74 \pm 1.81 $   ... ...
23 69.65 69.30 0.18 0.19   $ 17.17 \pm 1.78 $ $ 18.23 \pm 2.17 $   ... ...
24 60.68 60.51 0.12 0.14   $ 20.64 \pm 1.70 $ $ 70.44 \pm 2.47 $   ... ...

Reference Feature: Absolute position
Feature RA(J2000) Dec(J2000)    
  (h m s) ($^\circ$' '')    
1 18:34:40.28515 $\pm$ 0.00026 -09:00:38.3783 $\pm$ 0.0044    

Notes. For each identified feature, the label (given in Col. 1) increases with decreasing brightness. Columns 2(3) and 4(5) report the LSR velocity and brightness of the brightest spot for the right (left) circular polarization. Columns 6 and 7 give the position offset relative to the feature #1, in the east and north directions, respectively. Columns 8 and 9 report the fit split of LSR velocity (RCP-LCP) between co-spatial circular polarization components and the inferred l.o.s. magnetic field strength, respectively. The absolute position of the reference feature #1 is reported at the bottom of the table.
(a) A magnetic field of 0.34 mG shifts the emission velocity of 1665 MHz OH masers by 0.2 km s-1.


Source LaTeX | All tables | In the text

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