Collisional debris originating from CO clump location can explain the Fork and the Cat’s Tail Fork consistent with bound dust from the nearly edge-on secondary disk Cat’s Tail consistent with blowout grains; apparent inclination is a line-of-sight effect Required geometry consistent with main disk geometry and Beta Pic b’s orbit Requires over-production of dust mostly near a specific value, Beta~ 0.8. Two images: The first is the disk rendered in colors of yellow and red. Observations after subtraction of the main disk’s symmetric component. Again, there is a black instrumental artifact in the center, a bright horizontal disk, and the "cat's tail" curved line above the disk. The second is a model of the disk: A thin, slightly angled disk in similar colors, labeled "bound dust beta <0.5". On the right side is a feature that sweeps up and to the right, labeled "beta ~0.8".
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