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Minor species from comet 67P as measured from the VIRTIS-H instrument aboard Rosetta

Bockelee-Morvan, D. and Encrenaz, T. and Erard, S. and Leyrat, C. and Debout, V. and Capaccioni, F. and Filacchione, G. and Drossart, P. and Arnold, Gabriele and Biver, N and Crovisier, J. and Schmitt, B. and Fougere, N. and Combi, M. (2015) Minor species from comet 67P as measured from the VIRTIS-H instrument aboard Rosetta. In: 10th European Planetary Science Congress (EPSC), 10, p. 581. European Planetary Science Congress 2015, 27 Sep - 02 Oct 2015, Nantes, France.

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Official URL: http://meetingorganizer.copernicus.org/EPSC2015/EPSC2015-581.pdf


Since July 2014, the Visual IR Thermal Imaging Spectrometer (VIRTIS) onboard the ESA’s Rosetta spacecraft has intensively observed comet 67P/ Churyumov-Gerasimenko (67P/C-G). First results were published in [3]. VIRTIS is composed of two channels, –M for mapping and –H for high resolution, working in the 0.25-5 μm and 2-5 μm wavelength domains, respectively. In addition to nucleus mapping observations, limb observations were carried out to obtain spectra of the coma, and to detect fluorescence emissions of gas phase species. H2O, CO2, CO and organics have strong vibrational bands in the 2.5-5 μm range. The ν3 vibrational bands of H2O and CO2 at 2.67 and 4.27 μm, respectively, were detected in mid-October 2014 using VIRTIS-H, and observed regularly since then. In this contribution, we will present observations of minor species, such as OCS, CO, CH4, NH3, CH3OH. These species have been detected in cometary atmospheres, some of them in comet 67P by other Rosetta instruments. Model simulations show that they should be detected with VIRTIS-H near perihelion. Observations with the VIRTIS instrument will allow us to investigate whether the outgassing distributions of the species and diurnal variations are related to their volatility. Data acquired in the November 2014 to January 2015 period indicate a very low CO abundance relative to water of less than 1.9% (3-sigma), and a CO/CO2 upper limit of 0.7 (3- sigma), which show that 67P/C-G is CO-poor, as measured for other Jupiter-family comets.

Item URL in elib:https://elib.dlr.de/100895/
Document Type:Conference or Workshop Item (Poster)
Title:Minor species from comet 67P as measured from the VIRTIS-H instrument aboard Rosetta
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Bockelee-Morvan, D.Observatoire de Paris, MeudonUNSPECIFIED
Debout, V.LESIA, Observatoire de Paris/CNRS/UPMC/Université Paris-Diderot, Meudon, FranceUNSPECIFIED
Filacchione, G.INAF-IASF, Rome, ItalyUNSPECIFIED
Drossart, P.Observatoire de Paris, Meudon, FranceUNSPECIFIED
Arnold, GabrieleGabriele.Arnold (at) dlr.deUNSPECIFIED
Biver, NObservatoire de ParisUNSPECIFIED
Crovisier, J.Observatoire de Paris-Meudon, FranceUNSPECIFIED
Schmitt, B.Grenoble Planetology LaboratoryUNSPECIFIED
Fougere, N.University of Michigan, Ann Harbor, MI 48109, USAUNSPECIFIED
Combi, M.Space Physics Research Laboratory, The University of Michigan, Ann Arbor, USAUNSPECIFIED
Date:29 September 2015
Journal or Publication Title:10th European Planetary Science Congress (EPSC)
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Page Range:p. 581
Series Name:EPSC Abstracts
Keywords:VIRTIS, Rosetta, 67P, minor species
Event Title:European Planetary Science Congress 2015
Event Location:Nantes, France
Event Type:international Conference
Event Dates:27 Sep - 02 Oct 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:17 Dec 2015 08:44
Last Modified:31 Jul 2019 19:58

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