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Table 7.

Parameter values adopted by Shneider et al. (2014a) (Col. 2) and optimum sets of parameters from our study for the DAH model configuration (Cols. 3–7).

Parameter Region A Region A Region A Region A1 Region B Region C
(spiral arm) two-layer three-layer (spiral arm) (inter-arm) (spiral arm)
Bd (μG) 5.0 9.5 ± 0.7
bd (μG) 14.0 17.7 ± 1.7 18.7 ± 2.8 19.9 ± 1.7
Bh (μG) 5.0 4.6 ± 0.4 4.1 ± 0.5 3.8 ± 0.6 3.6 ± 0.3 2.9 ± 0.4
bh (μG) 4.0
ne, d (cm−3) 0.110 0.038 ± 0.003 0.026 ± 0.005 0.12 ± 0.03
ne, h (cm−3) 0.010 0.0068 ± 0.0007 0.0053 ± 0.0010 0.0068 ± 0.0009 0.0085 ± 0.0013

Reduced 0.81 2.4 0.98 0.82 1.5

Btot, d (μG) 14.9 23.5 ± 2.0 21.0 ± 2.5 23.9 ± 1.8 21.1 ± 1.7 25.5 ± 3.6

Notes. Parameters used to model the degree of polarization as a function of wavelength, derived with our interactive tool (see Fig. C.1). The third and fourth columns give the optimum parameter sets of the DAH model for a two-layer and three-layer system for the degree of polarization observed in region “A”. The last three columns give the optimum parameter sets of the DAH model (two-layer system) for the degree of polarization observed in regions “A1”, “B”, and “C”. Btot, d is the total field strength in the disk computed from these values ().

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