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Reflectance spectroscopy (200-2500nm) of highly-reduced phases under oxygen- and water-free conditions

Izawa, M.R.M. and Applin, D.M. and Mann, P. and Craig, M.a. and Cloutis, E. and Helbert, Jörn and Maturilli, Alessandro (2013) Reflectance spectroscopy (200-2500nm) of highly-reduced phases under oxygen- and water-free conditions. Icarus: International Journal of Solar System Studies, 226 (2), pp. 1612-1617. Elsevier. ISSN 0019-1035

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Official URL: http://linkinghub.elsevier.com/retrieve/pii/S0019103513003527


Spectra of highly-reduced mineral phases from 200 to 2500 nm provide new laboratory constraints on the surfaces of asteroids and other extremely reduced solid assemblages. Synthetic oldhamite (CaS) is distinguished by high ultraviolet reflectance (which decreases toward shorter wavelengths). Oldhamite and osbornite spectra show absorption features at ∼401 nm and ∼436 nm, respectively. Chemically pure synthetic oldhamite is spectrally distinct from naturally-occurring oldhamite from the Norton County aubrite, possibly due to differences in minor and trace element compositions, presence or absence of inclusions, or differences in oxidation/hydration (terrestrial weathering). Iron powders at 50 nm and 10 μm nominal particle sizes, nanophase graphite, and carlsbergite (CrN) all have very low reflectivity over the 200–2500 nm wavelength range. Carlsbergite has a slight blue spectral slope in the visible and near-infrared (400–2500 nm), while the iron powders and nanophase graphite show slight red slopes over this wavelength range.

Item URL in elib:https://elib.dlr.de/86937/
Document Type:Article
Title:Reflectance spectroscopy (200-2500nm) of highly-reduced phases under oxygen- and water-free conditions
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Izawa, M.R.M.University of Winnipeg, Winnipeg, CanadaUNSPECIFIED
Applin, D.M.University of Winnipeg, Winnipeg, CanadaUNSPECIFIED
Mann, P.University of Winnipeg, Winnipeg, CanadaUNSPECIFIED
Craig, M.a.University of Winnipeg, Winnipeg, CanadaUNSPECIFIED
Cloutis, E.University of Winnipeg, Winnipeg, CanadaUNSPECIFIED
Helbert, Jörnjoern.helbert (at) dlr.deUNSPECIFIED
Maturilli, AlessandroAlessandro.Maturilli (at) dlr.deUNSPECIFIED
Journal or Publication Title:Icarus: International Journal of Solar System Studies
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 1612-1617
Keywords:Asteroids, surfaces; Spectroscopy; Asteroids, composition; Ultraviolet observations; Mercury, surface
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 BepiColombo (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Experimentelle Planetenphysik
Deposited By: Helbert, Dr.rer.nat. Jörn
Deposited On:06 Jan 2014 09:17
Last Modified:10 Jan 2019 15:47

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