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Smooth pond-like deposits on asteroid 4 Vesta: Preliminary results from the Dawn mission

Hiesinger, H. and Ruesch, O. and Jaumann, R. and Nathues, A. and Raymond, C.T. and Russell, C.T. (2012) Smooth pond-like deposits on asteroid 4 Vesta: Preliminary results from the Dawn mission. In: 43rd Lunar and Planetary Science Conference Abstracts. 43rd Lunar and Planetary Science Conference, 19.–23. März, 2012, The Woodlands, Texas, USA.

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Abstract

Asteroid 4 Vesta is the second largest asteroid and is currently being investigated by the Dawn spacecraft. Vesta is of particular interest for our understanding of early solar system processes because it is most likely a fully differentiated planetesimal [1] that survived subsequent collisions and thus allows us to look back to the earliest phases of planet formation. Evidence for Vesta being differentiated comes from more than 900 HED (howardite-eucrite-diogenite) meteorites, which presumably originate from Vesta [e.g., 2-6]. Such a link between Vesta and the HED meteorites is supported by multispectral observations as well as dynamical considerations [7,8]. Launched in 2007, Dawn arrived at Vesta on July 16, 2011 to study the asteroid with three instruments, including the German Framing Camera (FC), the Italian Visible & Infrared Spectrometer (VIR), and the American Gamma Ray and Neutron Detector (GRaND). While there have been numerous observations from Earth and the Hubble space telescope [e.g., 9,10], Dawn provides the first high-resolution data from its survey orbit, high altitude mapping orbit (HAMO), and low altitude mapping orbit (LAMO). The inspection of FC data revealed smooth pond-like deposits of ambigious origin, similar to deposits on other asteroids such as Eros and Itokawa [11,12]. In principle, several scenarios for the origin of these deposits seem plausible and can be tested with Dawn data, including volcanism, impact sedimentation, impact melt deposition, dust levitation and transport, seismic shaking, or landslides.

Item URL in elib:https://elib.dlr.de/79799/
Document Type:Conference or Workshop Item (UNSPECIFIED)
Title:Smooth pond-like deposits on asteroid 4 Vesta: Preliminary results from the Dawn mission
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Hiesinger, H.Institut für Planetologie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, 48149 Münster, GermanyUNSPECIFIED
Ruesch, O.Planetologie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, 48149 Münster, GermanyUNSPECIFIED
Jaumann, R.ralf.jaumann (at) dlr.deUNSPECIFIED
Nathues, A.Max-Planck Institute for Solar System Research, Katlenburg-Lindau, GermanyUNSPECIFIED
Raymond, C.T.Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USAUNSPECIFIED
Russell, C.T.Univ. of California Los Angeles, Inst. Of Geophysics, Earth and Space Sciences, Los Angeles, CA 90095, USAUNSPECIFIED
Date:2012
Journal or Publication Title:43rd Lunar and Planetary Science Conference Abstracts
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Asteroid 4 Vesta, Dawn
Event Title:43rd Lunar and Planetary Science Conference
Event Location:The Woodlands, Texas, USA
Event Type:international Conference
Event Dates:19.–23. März, 2012
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 - Projekt DAWN
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Deposited By: Aydin, Zeynep
Deposited On:17 Dec 2012 10:49
Last Modified:31 Jul 2019 19:39

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