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Composition of comet 67P/Churyumov-Gerasimenko refractory crust as inferred from VIRTIS-M/Rosetta Spectro-Imager

Quirico, E. and Moroz, L.V. and Beck, P. and Schmitt, B. and Arnold, Gabriele and Bonal, L. and Filacchione, G. and Capaccioni, F. and Leyrat, C. and Bockelee-Morvan, D. and Erard, S. and Tosi, F. and Ciarnello, M. and Raponi, A. and Capria, M. T. and De Sanctis, M.C. and Piccioni, G. and Barucci, Antonella and Drossart, P. and Markus, Kathrin (2015) Composition of comet 67P/Churyumov-Gerasimenko refractory crust as inferred from VIRTIS-M/Rosetta Spectro-Imager. In: Lunar and Planetary Science, p. 2092. 46th Lunar and Planetary Science Conference (2015), 16 Mar - 20 Mar 2015, The Woodlands, Texas.

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Official URL: http://www.hou.usra.edu/meetings/lpsc2015/pdf/2092.pdf

Abstract

VIRTIS reflectance spectra of comet 67P/CG point to the presence of a crust composed of refractory compounds as 1) polyaromatic organic solids mixed with 2) sulfides and Fe-Ni alloys. The presence of sulfides may also account for the red visible slope. The presence of OH chemical groups is inferred from the broad 3.2 μm band. Contributions from aliphatic or aromatic C-H groups is possible, as well as a contribution from salts (NH4+, possibly structural H2O). Salts are expected as minor constituents due to the very low reflectance of the comet surface, but the large absorption coefficient of ions may make their spectral contribution significant. Analysis from other instruments aboard ROSETTA orbiter and PHILAE lander will help constrain further the contribution of minor species.

Item URL in elib:https://elib.dlr.de/101332/
Document Type:Conference or Workshop Item (Poster)
Title:Composition of comet 67P/Churyumov-Gerasimenko refractory crust as inferred from VIRTIS-M/Rosetta Spectro-Imager
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Quirico, E.Laboratory of Planetology, CNRS Joseph Fourier UniversityUNSPECIFIED
Moroz, L.V.Ljuba.moroz (at) dlr.deUNSPECIFIED
Beck, P.Laboratoire de Planétologie de Grenoble (LPG) - University Joseph Fourier Grenoble, Grenboble, FranceUNSPECIFIED
Schmitt, B.Grenoble Planetology LaboratoryUNSPECIFIED
Arnold, GabrieleGabriele.Arnold (at) dlr.deUNSPECIFIED
Bonal, L.Université Grenoble Alpes, CNRS, Institut de Planétologie et d’Astrophysique de Grenoble, Grenoble, FranceUNSPECIFIED
Filacchione, G.INAF-IASF, Rome, ItalyUNSPECIFIED
Capaccioni, F.INAF-IASF, italyUNSPECIFIED
Leyrat, C.LESIAUNSPECIFIED
Bockelee-Morvan, D.Observatoire de Paris, MeudonUNSPECIFIED
Erard, S.LESIAUNSPECIFIED
Tosi, F.INAF-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma ItalyUNSPECIFIED
Ciarnello, M.INAF-IASF, ItalyUNSPECIFIED
Raponi, A.INAF-IASF, ItalyUNSPECIFIED
Capria, M. T.Instituto di Astrofisica Spaziale e Fisica Cosmica, Roma, ItalyUNSPECIFIED
De Sanctis, M.C.Istituto Nazionale di Astrofisica, Rome, Italy.UNSPECIFIED
Piccioni, G.INAF-IASFUNSPECIFIED
Barucci, AntonellaObservatoire de Paris-Meudon, FranceUNSPECIFIED
Drossart, P.Observatoire de Paris, Meudon, FranceUNSPECIFIED
Markus, KathrinKathrin.Markus (at) dlr.deUNSPECIFIED
Date:17 March 2015
Journal or Publication Title:Lunar and Planetary Science
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Page Range:p. 2092
Status:Published
Keywords:VIRTIS, Rosetta, 67P, composition
Event Title:46th Lunar and Planetary Science Conference (2015)
Event Location:The Woodlands, Texas
Event Type:international Conference
Event Dates:16 Mar - 20 Mar 2015
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project ROSETTA Instruments
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Kappel, David
Deposited On:04 Jan 2016 09:12
Last Modified:31 Jul 2019 19:58

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