Table 2
Polarization properties of the Musca, B211, and L1506 filaments (Fil) and their backgrounds (Bg).
| I | Q | U | ψ a | σ ψ b | p | |
| [MJy sr-1] | [MJy sr-1] | [MJy sr-1] | [deg] | [deg] | [%] | |
|
|
||||||
| Musca | ||||||
| Total ......... | 3.67 ± 0.04 | 0.29 ± 0.01 | −0.17 ± 0.01 | 15.4 ± 0.5 | 2.1 ± 0.3 | 9.1 ± 0.5 |
| Fil(pol3) ......... | 2.12 ± 0.04 | 0.11 ± 0.01 | −0.11 ± 0.01 | 22.2 ± 1.3 | 5.1 ± 0.6 | 7.3 ± 0.4 |
| Fil(pol1) ......... | 2.39 ± 0.05 | 0.15 ± 0.01 | −0.12 ± 0.01 | 19.3 ± 1.0 | 3.8 ± 0.4 | 8.2 ± 0.4 |
| Bg(pol3) ......... | 1.55 ± 0.01 | 0.18 ± 0.01 | −0.06 ± 0.01 | 9.8 ± 0.3 | 2.7 ± 0.2 | 12.1 ± 0.1 |
| Bg(pol1) ......... | 1.28 ± 0.01 | 0.13 ± 0.01 | −0.05 ± 0.01 | 10.0 ± 0.4 | 3.8 ± 0.2 | 11.2 ± 0.1 |
|
|
||||||
| B211 | ||||||
| Total ......... | 7.31 ± 0.19 | −0.24 ± 0.01 | −0.11 ± 0.01 | 77.9 ± 0.8 | 3.5 ± 0.4 | 3.5 ± 0.2 |
| Fil(pol3) ......... | 4.50 ± 0.19 | −0.12 ± 0.01 | −0.04 ± 0.01 | 81.0 ± 1.8 | 7.8 ± 0.9 | 2.7 ± 0.2 |
| Fil(pol1) ......... | 4.86 ± 0.19 | −0.14 ± 0.01 | −0.03 ± 0.01 | 84.7 ± 1.6 | 6.7 ± 0.8 | 2.9 ± 0.2 |
| Bg(pol3) ......... | 2.81 ± 0.03 | −0.12 ± 0.01 | −0.07 ± 0.01 | 75.3 ± 0.8 | 5.7 ± 0.6 | 4.9 ± 0.2 |
| Bg(pol1) ......... | 2.45 ± 0.02 | −0.10 ± 0.01 | −0.07 ± 0.01 | 70.1 ± 1.0 | 7.9 ± 0.6 | 5.1 ± 0.1 |
|
|
||||||
| L1506 | ||||||
| Total ......... | 3.28 ± 0.09 | −0.01 ± 0.01 | 0.07 ± 0.01 | 132.3 ± 2.5 | 6.5 ± 2.0 | 2.1 ± 0.2 |
| Fil(pol3) ......... | 1.69 ± 0.08 | 0.04 ± 0.01 | 0.03 ± 0.01 | 161.7 ± 3.4 | 9.9 ± 2.4 | 3.3 ± 0.3 |
| Fil(pol1) ......... | 1.77 ± 0.09 | 0.05 ± 0.01 | 0.03 ± 0.01 | 164.0 ± 2.8 | 7.8 ± 2.1 | 3.6 ± 0.4 |
| Bg(pol3) ......... | 1.59 ± 0.03 | −0.05 ± 0.01 | 0.04 ± 0.01 | 107.8 ± 2.3 | 15.1 ± 1.5 | 3.9 ± 0.3 |
| Bg(pol1) ......... | 1.50 ± 0.02 | −0.06 ± 0.01 | 0.04 ± 0.01 | 105.2 ± 2.0 | 13.5 ± 1.3 | 4.7 ± 0.2 |
Notes. The total and filament values are computed on maps without and with background subtraction, respectively. They are average values across the filament area as explained in Sect. 4.2. The background values are at r = 0. We give two sets of values derived from the polynomial fits of degree three (pol3) and one (pol1) for comparison.
The errors on the polarization angles, ψ, correspond to statistical errors on the mean value of ψ.
The dispersion of the polarization angles, σψ, are derived as explained in Sect. 4.2.
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