In the eclipsing binary AI Phe, the hotter component is depleted in Fe and Mg relative to its cooler subgiant companion by about 0.1 dex, matching the atomic-diffusion signature seen in the open cluster M67.
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Evidence for elemental diffusion in the eclipsing binary star AI Phoenicis
In the eclipsing binary AI Phe, the hotter component is depleted in Fe and Mg relative to its cooler subgiant companion by about 0.1 dex, matching the atomic-diffusion signature seen in the open cluster M67.