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Krypton isotopes and noble gas abundances in the coma of comet 67P/Churyumov-Gerasimenko

Mall, Urs; Bar-Nun, Akiva; De Keyser, Johan +24 more

The ROSINA mass spectrometer DFMS on board ESA's Rosetta spacecraft detected the major isotopes of the noble gases argon, krypton, and xenon in the coma of comet 67P/Churyumov-Gerasimenko. Earlier, it has been shown that xenon exhibits an isotopic composition distinct from anywhere else in the solar system. However, argon isotopes, within error, w…