A1 Refereed original research article in a scientific journal

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




AuthorsOliver J. Stenzel, Martin Hilchenbach, Sihane Merouane, John Paquette, Kurt Varmuza, Cécile Engrand, Franz Brandstätter, Christian Koeberl, Ludovic Ferrière, Peter Filzmoser, Sandra Siljeström; the COSIMA team

Publication year2017

JournalMonthly Notices of the Royal Astronomical Society

Volume469

IssueSupplement: 2

First page S492

Last pageS505

Number of pages14

ISSN0035-8711

eISSN1365-2966

DOIhttps://doi.org/10.1093/mnras/stx1908(external)

Web address https://academic.oup.com/mnras/article/469/Suppl_2/S492/4060708(external)

Self-archived copy’s web addresshttps://research.utu.fi/converis/portal/detail/Publication/38998460(external)


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.


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