DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Vesta’s mineralogical composition as as revealed by the visible and infrared spectrometer on Dawn

Desanctis, M.C. and Ammannito, E. and Capria, M. T. and Combe, J. P. and Frigeri, A. and Longobardo, A and Magni, G. and Marchi, S. and McCord, T. B. and Palomba, E. and Tosi, F. and Zambon, F. and Carraro, F. and Fonte, S. and Li, Y. J. and McFadden, L.A. and Mittlefehldt, D. W. and Pieters, C. and Jaumann, R. and Stephan, K. and Raymond, C.A. and Russell, C.T. (2013) Vesta’s mineralogical composition as as revealed by the visible and infrared spectrometer on Dawn. Meteoritics & Planetary Science, 48 (11), pp. 2166-2184. Wiley. doi: 10.1111/maps.12138. ISSN 1086-9379.

Full text not available from this repository.

Official URL: http://onlinelibrary.wiley.com/doi/10.1111/maps.12138/abstract


The Dawn spacecraft mission has provided extensive new and detailed data on Vesta that confirm and strengthen the Vesta–howardite–eucrite–diogenite (HED) meteorite link and the concept that Vesta is differentiated, as derived from earlier telescopic observations. Here, we present results derived by newly calibrated spectra of Vesta. The comparison between data from the Dawn imaging spectrometer—VIR—and the different class of HED meteorites shows that average spectrum of Vesta resembles howardite spectra. Nevertheless, the Vesta spectra at high spatial resolution reveal variations in the distribution of HED-like mineralogies on the asteroid. The data have been used to derive HED distribution on Vesta, reported in Ammannito et al. (2013), and to compute the average Vestan spectra of the different HED lithologies, reported here. The spectra indicate that, not only are all the different HED lithologies present on Vesta, but also carbonaceous chondritic material, which constitutes the most abundant inclusion type found in howardites, is widespread. However, the hydration feature used to identify carbonaceous chondrite material varies significantly on Vesta, revealing different band shapes. The characteristic of these hydration features cannot be explained solely by infalling of carbonaceous chondrite meteorites and other possible origins must be considered. The relative proportion of HEDs on Vesta's surface is computed, and results show that most of the vestan surface is compatible with eucrite-rich howardites and/or cumulate or polymict eucrites. A very small percentage of surface is covered by diogenite, and basaltic eucrite terrains are relatively few compared with the abundance of basaltic eucrites in the HED suite. The largest abundance of diogenitic material is found in the Rheasilvia region, a deep basin, where it clearly occurs below a basaltic upper crust. However, diogenite is also found elsewhere; although the depth to diogenite is consistent with one magma ocean model, its lateral extent is not well constrained.

Item URL in elib:https://elib.dlr.de/84028/
Document Type:Article
Title:Vesta’s mineralogical composition as as revealed by the visible and infrared spectrometer on Dawn
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Desanctis, M.C.INAF, Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma, ItalyUNSPECIFIEDUNSPECIFIED
Ammannito, E.INAF, Istituto di Fisica Dello Spazio Interplanetario, Roma, ItalyUNSPECIFIEDUNSPECIFIED
Capria, M. T.Instituto di Astrofisica Spaziale e Fisica Cosmica, Roma, ItalyUNSPECIFIEDUNSPECIFIED
Combe, J. P.Space Science Inst., Winthrop WA, USA, Lab. de Planetologie et de Geodynamique, U. de Nantes, Nantes, FranceUNSPECIFIEDUNSPECIFIED
Frigeri, A.National Institute of Astrophysics, Rome, ItalyUNSPECIFIEDUNSPECIFIED
Longobardo, AINAF-LAPS, Via del Fosso del Cavaliere 100, I-00133 Rome, ItalyUNSPECIFIEDUNSPECIFIED
Magni, G.INAF/Instituto di Astrofisica Spaziale e Fisica Cosmica, Rome, ItalyUNSPECIFIEDUNSPECIFIED
Marchi, S.Department of Astronomy, University of PaduaUNSPECIFIEDUNSPECIFIED
McCord, T. B.HIGP/SOEST, University of Hawaii, Winthrop, WA, USAUNSPECIFIEDUNSPECIFIED
Palomba, E.Institute for Interplanetary Space Physics - INAF, Rome, ItalyUNSPECIFIEDUNSPECIFIED
Tosi, F.INAF-IASF Istituto di Astrofisica Spaziale e Fisica Cosmica, Roma ItalyUNSPECIFIEDUNSPECIFIED
Zambon, F.INAF-IAPS, Via del Fosso del Cavaliere 100, I-00133 Rome, ItalyUNSPECIFIEDUNSPECIFIED
Carraro, F.INAF/Instituto di Fisica dello Spazio Interplanetarario, Rome, ItalyUNSPECIFIEDUNSPECIFIED
Fonte, S.INAF/Instituto di Fisica dello Spazio Interplanetarario, Rome, ItalyUNSPECIFIEDUNSPECIFIED
Li, Y. J.Planetary Science Institute, Tucson, Arizona, 85719, USAUNSPECIFIEDUNSPECIFIED
McFadden, L.A.University of Maryland, College Park, MD, USAUNSPECIFIEDUNSPECIFIED
Mittlefehldt, D. W.Astromaterials Research Office, NASA Johnson Space Center, Houston, Texas, USAUNSPECIFIEDUNSPECIFIED
Pieters, C.Brown University, Providence, RI, USAUNSPECIFIEDUNSPECIFIED
Raymond, C.A.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USAUNSPECIFIEDUNSPECIFIED
Russell, C.T.Institute of Geophysics, University of California, Los Angeles, Los Angeles, CA 90095UNSPECIFIEDUNSPECIFIED
Date:8 July 2013
Journal or Publication Title:Meteoritics & Planetary Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 2166-2184
Keywords:DAWN, Vesta, mineralogical compositionas, infrared spectrometer
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 DAWN (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Deposited By: Voigt, Joana
Deposited On:18 Sep 2013 11:03
Last Modified:06 Sep 2019 15:15

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.