A Flared, Orbiting, Dusty Disk around Hd 233517
نویسنده
چکیده
We find that the infrared excess around HD 233517, a first-ascent red giant, can be explained naturally if the star possesses an orbiting, flared, dusty disk. We estimate that the outer radius of this disk is 45 AU and the total mass within the disk is 0.01M . We speculate that this disk is the result of the engulfment of a lowmass companion star that occurred when HD 233517 became a red giant. Subject headings: circumstellar matter — stars: mass loss
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