Top left: polarized intensity observation of GG Tau A in near-infrared (H-Band) with Subaru/HiCIAO (Yang et al. 2017). The uncalibrated observation was fit visually to the simulated emission maps by assuming a linear photon count. Other images: polarized intensity maps of GG Tau A that are simulated at λ = 1.65 μm. The images are convolved with a Gaussian beam of 0.07′′ ×0.07′′ to take the resolution of the Subaru/HiCIAO telescope into account. Each simulated map considers a different combination of circumstellar disks around GG Tau Aa, Ab1, and Ab2 to investigate their individual influence on the emission of the circumbinary disk (see Table 2). The circles mark regions that are used to derive characteristic flux ratios from the average emission in each circle. Regions 2, 3, and 6 are the upper layers of the CB disk, whereas regions 1, 4, and 5 are located on the midplane in the vertical wall of the circumbinary disk. Regions 4, 5, and 6 represent specific locations of projected shadows by individual CS disks.