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Similarities in element content between comet 67P/Churyumov–Gerasimenko coma dust and selected meteorite samples

Oliver J. Stenzel 1 Martin Hilchenbach 1 Sihane Merouane 1 John Paquette 1 Kurt Varmuza 2 Cecile Engrand 3 Franz Brandstätter 4 Christian Koeberl 4 Ludovic Ferrière 4 Peter Filzmoser 2 Sandra Siljeström 5
1 MPS - Max Planck Institute for Solar System Research
2 Institute of Statistics and Mathematical Methods in Economics
3 CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
4 NHM - Natural History Museum [Vienna]
5 RISE Research Institutes of Sweden
Abstract : We have analysed the element composition and the context of particles collected within the coma of 67P/Churyumov–Gerasimenko with Rosetta’s COmetary Secondary Ion Mass Analyzer (COSIMA). A comparison has been made between on board cometary samples and four meteorite samples measured in the laboratory with the COSIMA reference model. Focusing on the rock-forming elements, we have found similarities with chondrite meteorites for some ion count ratios. The composition of 67P/Churyumov–Gerasimenko particles measured by COSIMA shows an enrichment in volatile elements compared to that of the investigated Renazzo (CR2) carbonaceous meteorite sample.
Keywords : meteoroids meteors meteorites comets: individual: 67P/Churyumov–Gerasimenko
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Oliver J. Stenzel, Martin Hilchenbach, Sihane Merouane, John Paquette, Kurt Varmuza, et al.. Similarities in element content between comet 67P/Churyumov–Gerasimenko coma dust and selected meteorite samples. Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P - Oxford Open Option A, 2017, 469 (Suppl 2), pp.S492-S505. ⟨10.1093/mnras/stx1908⟩. ⟨insu-02985846⟩

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