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Table 14.
Normalized mean counts ctn6 for the PSF surface brightness of R Aqr and the polarized surface brightness of the circumstellar region along the position angle ϕ = 9° for the frames for the intensity Inb, Isat, and Icoro and the polarized flux Qnb, Qsat, and Qcoro.
| Parameter | ρ[″]= | 0 | 0.018 | 0.108 | 0.288 | 0.432 | 0.864 | 1.728 |
|---|---|---|---|---|---|---|---|---|
| r [pix] = | 0 | 5 | 30 | 80 | 120 | 240 | 480 | |
| area [pix] | 1 × 1 | 1 × 5 | 10 × 10 | 10 × 10 | 10 × 10 | 10 × 10 | 20 × 20 | |
| Intensity | ||||||||
| Inb(r) | ctn6 | 5775 | 1846 | 14.9 | 2.9 : : | |||
| Isat(r) | ctn6 | 5116a | 1823 | 18.7 | 4.7 | 3.2 | 0.67 : : | |
| Icoro(r) | ctn6 | 15.4b | 1.60b | 7.13 | 3.39 | 3.82 | 0.61 | 0.073 |
| Polarized flux | ||||||||
| −Qnb(r) | ctn6 | 26.2 | 12.1 | 0.24 | 0.013:: | |||
| −Qsat(r) | ctn6 | 32.3a | 21.1 | 0.368 | 0.028 | 0.086 | 5.4 × 10−3 | |
| −Qcoro(r) | ctn6 | 0.025b | 0.0292b | 0.319 | 0.0216 | 0.126 | 7.4 × 10 −3 | 0.14 × 10 −3 |
| Fractional polarization | ||||||||
| −Q(r)/I(r) | 0.45% | 1.16% | 1.98% | 0.64% | 3.3% | 1.2% | 0.19% | |
| Surface brightness contrast [Δmag arcsec−2] | ||||||||
| CSB(r) c | mag | −6.6 | −5.4 | 0.6 | 1.5 | 1.3 | 3.3 | 5.6 |
| CSBpol(r) (R Aqr) | mag | −0.8 | −0.5 | 4.0 | 6.9 | 5.0 | 8.1 | 12.4 |
| Artifical point source contrast [Δmag] | ||||||||
| Cpol d (b,c,d,e) | mag | 10.8 | 12.5 | 12.5 | 12.5 | |||
| Cpol(r) 5σ-limit | mag | 8.8 | 12.6 | 13.0 | 14.9 | 15.6 | ||
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