Resolution and calibration effects in high contrast polarimetric imaging of circumstellar scattering regions

Open Access

Table 1

Results for Ring0 models with different radii r₀.

r₀		$Σ Q_{ϕ} / Σ Q_{ϕ}^{'}$ ${\rm{\Sigma }}{Q_\phi }/{\rm{\Sigma }}Q_\phi ^\prime$		r(max(Q_ϕ))		r_h(Q_ϕ)
		PSF_G	PSF_AO	PSF_G	PSF_AO	PSF_G	PSF_AO
[mas]	[D_PSF]	[%]	[%]	[D_PSF]	[D_PSF]	[D_PSF]	[D_PSF]
3.15	.125	2.5	1.0	0.62	0.59	0.31	0.26
6.30	.25	8.3	3.4	0.64	0.59	0.32	0.27
12.6	.5	28.2	11.6	0.68	0.67	0.33	0.30
25.2	1	66.2	28.4	0.99	0.96	0.52	0.48
50.4	2	90.9	46.9	1.96	1.92	1.42	1.23
100.8	4	97.7	60.1	3.98	3.95	3.34	3.19
201.6	8	99.9	66.1^a	≈r₀	≈r₀
403.2	16	99.9	70.1^a
806.4	32	100.	77.9^a
error	±0.2	±0.2	±0.02	±0.02	±0.01	±0.01

Notes. Values are given for the integrated azimuthal polarization $Σ Q_{ϕ} / Σ Q_{ϕ}^{'}$ ${\rm{\Sigma }}{Q_\phi }/{\rm{\Sigma }}Q_\phi ^\prime$ for Ring0 models after convolution with the Gaussian PSF_G and the extended PSF_AO. For compact models also the radii for the peak flux r(max(Q_ϕ)) and for the central hole r_h(Q_ϕ) are listed. The column D_PSF gives the ring radius in units of the FWHM of the PSF. ^(a)Significant amounts of polarization signal not contained in the used aperture with r = 1.5″.

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