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Phobos surface composition: clues from laboratory emissivity measurements and MGS-TES spectral data

Palomba, E. and D'Amore, M. and Zinzi, A. and Maturilli, A. and D'Aversa, E. and Helbert, J. (2010) Phobos surface composition: clues from laboratory emissivity measurements and MGS-TES spectral data. EPSC 2010, 19 – 24 Sep 2010, Rome, Italy.

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Abstract

The debate about the composition of the Martian moon Phobos is still open, even if it has been observed both from Earth and from spacecraft orbiting Mars. In this work we used the linear deconvolution technique on thermal infrared spectra acquired by Mars Global Surveyor Thermal Emission Spectrometer (MGS-TES) [1] to investigate its surface composition. The preliminary results here shown seem to be indicative of a large abundance of phyllosilicates (e.g. biotite), with small amounts of other materials, mainly olivines. In particular the grain sizes involved should be very fines, with particle diameter less than 25 micrometerm. However, since the linear deconvolution can be considered high efficient only for large particles, further investigations, involving laboratory spectra of mixtures of phyllosilicates and olivines, have to be performed.

Document Type:Conference or Workshop Item (Speech)
Title:Phobos surface composition: clues from laboratory emissivity measurements and MGS-TES spectral data
Authors:
AuthorsInstitution or Email of Authors
Palomba, E.Istituto di Fisica dello Spazio Interplanetario (IFSI-INAF), Rome – Italy (ernesto.palomba@ifsi-roma.inaf.it)
D'Amore, M.Mario.Damore@dlr.de
Zinzi, A. CETEMPS – Dipartimento di Fisica, Università dell’Aquila, Via Vetoio, Coppito (AQ), Italy
Maturilli, A.Alessandro.Maturilli@dlr.de
D'Aversa, E.Istituto di Fisica dello Spazio Interplanetario (IFSI-INAF), Rome – Italy
Helbert, J.Joern.Helbert@dlr.de
Date:September 2010
Keywords:Phobos MGS TES infrared laboratory emissivity
Event Title:EPSC 2010
Event Location:Rome, Italy
Event Type:international Conference
Event Dates:19 – 24 Sep 2010
Organizer:EPCS
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben Planetenforschung (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Terahertz and Infrared Sensors
Deposited By: Dr. Mario Amore
Deposited On:12 Jan 2011 10:17
Last Modified:12 Jan 2011 10:17

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