SETI bioastro: Did the star HD 82943 swallow one of its planets?

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From: Larry Klaes (larry.klaes@incent.com)
Date: Thu May 10 2001 - 15:09:52 PDT


Did the star HD 82943 swallow one of its planets? The VLT Uncovers Traces of Stellar Cannibalism

Using the ESO VLT 8.2-m KUEYEN telescope, astronomers have detected the presence of the rare isotope Lithium-6 in HD 82943, a solar-type star known to possess a planetary system. Curiously, any primordial Lithium-6 would not survive the early evolutionary stages of a metal-rich solar-type star. The Lithium-6 now seen in HD 82943 must therefore have been added later. Astronomers believe that this observation strongly suggests that the star has engulfed one of its planets, whose Lithium-6 was then deposited in the star's atmosphere.

http://www.spaceref.com/news/viewpr.html?pid=4795


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