Fig. 1
Comparison between the ALMA observation (left panel) and the model image (middle panel) atBand 6. The beam size is indicated by the white filled ellipse in the observed image. The residuals between the observed and model maps are shown in the right panel, in which σ refers to the rms level 0.07 mJy beam−1 of the CLEANed map. The dashed ellipses indicate the locations of the gap and ring.
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