Left: azimuthal average of the polarized intensity profile of the circumbinary disk around CS Cha in the J band (red squares). The profile was measured in the Qφ image, while the estimated uncertainties were determined in the Uφ image. We indicate the radius of the coronagraphic mask with the black dotted line. In addition, we show the throughput curve of the coronagraph used as discussed in Sect. 6.2 (green solid line). Finally we show the azimuthal disk profile corrected by the coronagraph throughput (blue diamonds). Right: azimuthal average of the polarized intensity profile of the circumbinary disk around CS Cha in the J band (blue solid line) and the H band (red dash-dotted line). Angular separations were converted to projected separations using the distance of 165 pc.
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