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20092026
most citedAncient planetary systems are orbiting a large fraction of white dwarf stars

355 citations · 866 across the 8 of their papers we have counts for

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astro-ph.EP2009★ 192 cited

Chemical Abundances in the Externally Polluted White Dwarf GD 40: Evidence of a Rocky Extrasolar Minor Planet

B. Klein, M. Jura, D. Koester +2

We present Keck/HIRES data with model atmosphere analysis of the helium-dominated polluted white dwarf GD 40, in which we measure atmospheric abundances relative to helium of 9 ele…