Evidence for an Anhydrous Carbonaceous Extrasolar Minor Planet
Jura et al
Using Keck/HIRES, we report abundances of 11 different elements heavier than helium in the spectrum of Ton 345, a white dwarf that has accreted one of its own minor planets. This particular extrasolar planetesimal which was at least 60% as massive as Vesta appears to have been carbon-rich and water-poor; we suggest it was compositionally similar to those Kuiper Belt Objects with relatively little ice.
Friday, December 19, 2014
Ton 345 Accreted an Anhydrous Carbonaceous Minor Planet
Posted by Will Baird at 12:00 PM
Labels: asteroids, keck, minor exoplanets, ton 345, white dwarf, white dwarf exoplanets
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