Image Details
Caption: Figure 4.
Residual images (color map) and contours (white lines) overlaid with observed 3σ contour (black lines) for the single-ring (left-hand panels) and double-ring (right-hand panels) models. The colorbar scale is truncated to highlight the significance of the residual outer ring. The dashed contours indicate negative residuals (−3, −10, and −30σ).
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