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Fig. 1

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Unsaturated images of HR 4796 A, with both the star and dust ring detected with high astrometric precision. Reduced images from five filters taken in two epochs are shown. The black spot in the centers of the panels show the star (unsaturated in J, CH4 short and CH4 long; see Table 2). The intensities within 180 mas of the star have been divided by 100 to clearly show the unsaturated stellar peak. The reductions were done using a point-source recovery pipeline, which yields a higher fidelity image of the bright rim of the HR 4796 A disk. The last panel to the bottom right is the best-fit model to the Ks-band image with the model and data comparison region highlighted (by subtracting 0.5 from the region’s pixel values). The color bar to the right gives the normalized pixel intensities in linear scale.

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