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The Chemical Composition of an Extrasolar Minor Planet
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The Chemical Composition of an Extrasolar Minor Planet
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We report the relative abundances of 17 elements in the atmosphere of the white dwarf star GD 362, material that, very probably, was contained previously in a large asteroid or asteroids with composition similar to the Earth/Moon system. The asteroid may have once been part of a larger parent body not unlike one of the terrestrial planets of our solar system.
Forward citations
Cited by 2 Pith papers
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Magnetically guided accretion and extremely slow rotation in a metal-enriched white dwarf
WD 1532+129 rotates once every ~289 days — the slowest directly measured spin of any white dwarf — and its accreted metals sit in patches at both magnetic poles.
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The Effects of Magnetic Accretion on the Spatial Extent of White Dwarf Pollution
Magnetic channeling concentrates white dwarf pollution into small patches, makes metal lines vary as the star spins, and biases inferred accretion rates low.
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