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  Carbon-rich dust in comet 67P/Churyumov-Gerasimenko measured by COSIMA/Rosetta

Bardyn, A., Baklouti, D., Cottin, H., Fray, N., Briois, C., Paquette, J., et al. (2017). Carbon-rich dust in comet 67P/Churyumov-Gerasimenko measured by COSIMA/Rosetta. Monthly Notices of the Royal Astronomical Society, 469(Suppl. 2), S712-S722. doi:10.1093/mnras/stx2640.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0001-1B86-A Version Permalink: http://hdl.handle.net/21.11116/0000-0001-497E-1
Genre: Journal Article

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 Creators:
Bardyn, Anaïs, Author
Baklouti, Donia, Author
Cottin, Hervé, Author
Fray, Nicolas, Author
Briois, Christelle, Author
Paquette, John1, Author              
Stenzel, Oliver Joachim1, Author              
Engrand, Cécile, Author
Fischer, Henning1, Author              
Hornung, Klaus, Author
Isnard, Robin, Author
Langevin, Yves, Author
Lehto, Harry, Author
Le Roy, Léna, Author
Ligier, Nicolas, Author
Merouane, Sihane1, Author              
Modica, Paola, Author
Orthous-Daunay, François-Régis, Author
Rynö, Jouni, Author
Schulz, Rita, Author
Silén, Johan, AuthorThirkell, Laurent, AuthorVarmuza, Kurt, AuthorZaprudin, Boris, AuthorKissel, Jochen1, Author              Hilchenbach, Martin2, Author               more..
Affiliations:
1Department Planets and Comets, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832288              
2MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832291              

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Free keywords: astrochemistry, space vehicles: instruments, techniques: miscellaneous, comets: general, comets: individual: 67P/Churyumov-Gerasimenko
 MPIS_PROJECTS: ROSETTA: COSIMA
 Abstract: Cometary ices are rich in CO2, CO and organic volatile compounds, but the carbon content of cometary dust was only measured for the Oort Cloud comet 1P/Halley, during its flyby in 1986. The COmetary Secondary Ion Mass Analyzer (COSIMA)/Rosetta mass spectrometer analysed dust particles with sizes ranging from 50 to 1000 μm, collected over 2 yr, from 67P/Churyumov-Gerasimenko (67P), a Jupiter family comet. Here, we report 67P dust composition focusing on the elements C and O. It has a high carbon content (atomic $${\rm{C}}/{\rm{Si}} = 5.5{\rm{\ }}_{ - 1.2}^{ + 1.4}\ \ {\rm{on\ average}}$ $) close to the solar value and comparable to the 1P/Halley data. From COSIMA measurements, we conclude that 67P particles are made of nearly 50 per cent organic matter in mass, mixed with mineral phases that are mostly anhydrous. The whole composition, rich in carbon and non-hydrated minerals, points to a primitive matter that likely preserved its initial characteristics since the comet accretion in the outer regions of the protoplanetary disc.

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Language(s): eng - English
 Dates: 2018-04-102017
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1093/mnras/stx2640
 Degree: -

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Title: Monthly Notices of the Royal Astronomical Society
  Other : Mon. Not. R. Astron. Soc.
Source Genre: Journal
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Affiliations:
Publ. Info: Oxford : Oxford University Press
Pages: - Volume / Issue: 469 (Suppl. 2) Sequence Number: - Start / End Page: S712 - S722 Identifier: ISSN: 1365-8711
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000024150