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Perez","submitted_at":"2019-02-02T13:55:03Z","abstract_excerpt":"Context: The complex system HD 100453 AB with a ring-like circumprimary disk and two spiral arms, one of which is pointing to the secondary, is a good laboratory to test spiral formation theories. Aims: To quantify the interaction of HD 100453 B with the circumprimary disk. Methods: Using ALMA band 6 dust continuum and CO isotopologue observations we study the HD 100453 AB system with a spatial resolution of 0.09\" x 0.17\" at 234 GHz. We use SPH simulations and orbital fitting to investigate the tidal influence of the companion on the disk. 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