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Spectral Characterization of Carboxylic Acids, Amino Acids and Ammonium Salts as the Carriers of 3.2 µm Band of Comet 67P/Churyumov-Gerasimenko

Istiqomah, I. and Quirico, E. and Faure, A. and Poch, O. and Bonal, L. and Schmitt, B and Ciarniello, M. and Filacchione, G. and Capaccioni, F. and Leyrat, C. and Arnold, Gabriele and Moroz, Liubov (2018) Spectral Characterization of Carboxylic Acids, Amino Acids and Ammonium Salts as the Carriers of 3.2 µm Band of Comet 67P/Churyumov-Gerasimenko. Meteoritical Society. 81st Annual Meeting of The Meteoritical Society 2018, 22 - 27 July 2018, Moscow, Russia.

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Official URL: https://www.hou.usra.edu/meetings/metsoc2018/pdf/6214.pdf

Abstract

The VIRTIS instrument (Visible InfraRed Thermal Imaging Spectrometer) aboard of the Rosetta spacecraft has collected hyperspectral images of the surface of comet 67P in the 0.4-5 μm range. It revealed a broad feature centered at 3.2 μm in the reflectance spectra of comet 67P/CG, which might be consistent with the presence of semi-volatile organics, also possibly detected by the COSAC and PTOLEMY instruments [1-4]. Carboxylic acids have been proposed as candidates as these molecules in the liquid form display a broad absorption band that fit that of the 3.2 μm band and carboxylic acids are also the main component in the soluble organic fraction in primitive meteorites, with several tens of carboxylic, dicarboxylic and hydroxylated acids identified so far [5]. In this study, we have focused on the experimental spectral characterization of the carriers of the band at ~ 3.2 μm with particular attention to amino acid and carboxylic acids whose spectral properties in the solid state are poorly known, as well as to the ammonium ion.

Item URL in elib:https://elib.dlr.de/126041/
Document Type:Conference or Workshop Item (Speech)
Title:Spectral Characterization of Carboxylic Acids, Amino Acids and Ammonium Salts as the Carriers of 3.2 µm Band of Comet 67P/Churyumov-Gerasimenko
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Istiqomah, I.Université Grenoble Alpes, IPAG, GrenobleUNSPECIFIED
Quirico, E.Université Grenoble Alpes, IPAG, Grenoble, FranceUNSPECIFIED
Faure, A.PIIM, Marseille, FranceUNSPECIFIED
Poch, O.Université Grenoble Alpes, IPAG, GrenobleUNSPECIFIED
Bonal, L.Université Grenoble Alpes, IPAG, GrenobleUNSPECIFIED
Schmitt, BUniversité Grenoble Alpes, IPAG, GrenobleUNSPECIFIED
Ciarniello, M.INAF-IAPS, Rome, ItalyUNSPECIFIED
Filacchione, G.INAF-IAPS, Rome, ItalyUNSPECIFIED
Capaccioni, F.INAF-IAPS, Rome, ItalyUNSPECIFIED
Leyrat, C.LESIA, Meudon, FranceUNSPECIFIED
Arnold, GabrieleGabriele.Arnold (at) dlr.deUNSPECIFIED
Moroz, LiubovLjuba.Moroz (at) dlr.deUNSPECIFIED
Date:2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:2067
Page Range:p. 6214
Publisher:Meteoritical Society
Series Name:LPI Contribution
Status:Published
Keywords:Comtes, 67/P, Rosetta, comparative laboratory spectroscopy
Event Title:81st Annual Meeting of The Meteoritical Society 2018
Event Location:Moscow, Russia
Event Type:international Conference
Event Dates:22 - 27 July 2018
Organizer:Meteoritical Society
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Science and Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Erforschung des Weltraums
DLR - Research theme (Project):R - Vorhaben Exploration des Sonnensystems
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Leitungsbereich PF
Deposited By: Arnold, Dr. Gabriele
Deposited On:18 Jan 2019 11:51
Last Modified:31 Jul 2019 20:23

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