The polarisation properties of the HD 181327 debris ring - Evidence for sub-micron particles from scattered light observations

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Table C.2

Goodness of fit estimates and corresponding parameters for the best models with respect to the polarised fraction, total intensity SPF, or both.

	best polar. frac	best SPF	best combination
Theory	Mie	Mie	Mie
v	−3.5	−3.5	−4.5
q_Sior	0	0.5	∞
	0^(a)	0^(a)	0^(a)
S_min ( μm)	0.18	0.56	3.16
P	0%	0%	0%

	7.1	77.7	84.8
	393	1.6	395
	394	442	65.3

Notes. ^(a)When the porosity without ice P is 0, there is no empty holes to be filled by water ice, hence no water ice in the composition and the fraction of vacuum removed by the ice is unconstrained.

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