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Some white dwarfs show heavy elements in their atmospheres – evidence of shredded asteroids. If "White Dwarf 269" is a "polluted" DAZ or DZ type, its PDF might contain metal lines (Ca, Mg, Fe) critical for exoplanetary geology studies. white dwarf 269 pdf
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Alternative: Search for (from McCook & Sion, 1999) and then look for entry 269 in that printed catalog. While the cover screamed Fantasy