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Surface water-ice deposits in the northern shadowed regions of Ceres

Platz, T. and Nathues, A. and Schorghofer, N. and Preusker, Frank and Mazarico, E. and Schröder, Stefan and Byrne, S. and Kneissl, T. and Schmedemann, N. and Combe, J.-P. and Schäfer, M. and Thangjam, G. S. and Hoffmann, M. and Gutierrez-Marques, P. and Landis, M. E. and Dietrich, W. and Ripken, J. and Matz, Klaus-Dieter and Russell, C.T. (2016) Surface water-ice deposits in the northern shadowed regions of Ceres. Nature Astronomy, 1, 0007. Nature Publishing Group. DOI: 10.1038/s41550-016-0007 ISSN 2397-3366

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Official URL: http://www.nature.com/articles/s41550-016-0007

Abstract

Ceres, a dwarf planet located in the main asteroid belt, has a low bulk density 1 , and models predict that a substantial amount of water ice is present in its mantle and outer shell 2–4 . The Herschel telescope and the Dawn spacecraft 5 have observed the release of water vapour from Ceres 6,7 , and exposed water ice has been detected by Dawn on its surface at mid-latitudes 8 . Water molecules from endogenic and exo- genic sources can also be cold-trapped in permanent shad- ows at high latitudes 9–11 , as happens on the Moon 12,13 and Mercury 14,15 . Here we present the first image-based survey of Ceres’s northern permanent shadows and report the discov- ery of bright deposits in cold traps. We identify a minimum of 634 permanently shadowed craters. Bright deposits are detected on the floors of just 10 of these craters in multi- scattered light. We spectroscopically identify one of the bright deposits as water ice. This detection strengthens the evidence that permanently shadowed areas have preserved water ice on airless planetary bodies.

Item URL in elib:https://elib.dlr.de/109971/
Document Type:Article
Title:Surface water-ice deposits in the northern shadowed regions of Ceres
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Platz, T.max planck institut für sonnensystemforschungUNSPECIFIED
Nathues, A.max-planck institute for solar system research, katlenburg-lindau, germanyUNSPECIFIED
Schorghofer, N.university of hawaii at manoaUNSPECIFIED
Preusker, Frankfrank.preusker (at) dlr.deUNSPECIFIED
Mazarico, E.nasa goddard space flight center, greenbelt, md 20771, usaUNSPECIFIED
Schröder, StefanStefanus.Schroeder (at) dlr.dehttps://orcid.org/0000-0003-0323-8324
Byrne, S.lunar and planetary laboratory, university of arizona, tucson, az, usaUNSPECIFIED
Kneissl, T.freie universität berlin, inst. of geosciences, planetology and remote sensingUNSPECIFIED
Schmedemann, N.freie universitaet berlin, inst. of geosciences, planetology and remote sensing, malteserstr. 74, 12249 berlin, germanyUNSPECIFIED
Combe, J.-P.bear fight institute, 22 fiddler’s road, box 667, winthrop, washington 98862, usaUNSPECIFIED
Schäfer, M.max-planck-institut für sonnensystemforschung, justus-von-liebig-weg 3, 37077 göttingen, germanyUNSPECIFIED
Thangjam, G. S.max-planck-institut für sonnensystemforschung, justus-von-liebig-weg 3, 37077 göttingen, germanyUNSPECIFIED
Hoffmann, M.max-planck-institut für sonnensystemforschung, justus-von-liebig-weg 3, 37077 göttingen, germanyUNSPECIFIED
Gutierrez-Marques, P.max-planck-institut für sonnensystemforschung, justus-von-liebig-weg 3, 37077 göttingen, germanyUNSPECIFIED
Landis, M. E.lunar and planetary laboratory, university of arizona, tucson, az, usaUNSPECIFIED
Dietrich, W.max-planck-institut für sonnensystemforschung, justus-von-liebig-weg 3, 37077 göttingen, germanyUNSPECIFIED
Ripken, J.max-planck-institut für sonnensystemforschung, justus-von-liebig-weg 3, 37077 göttingen, germanyUNSPECIFIED
Matz, Klaus-Dieterklaus-dieter.matz (at) dlr.deUNSPECIFIED
Russell, C.T.institute of geophysics, university of california, los angeles, los angeles, ca 90095UNSPECIFIED
Date:15 December 2016
Journal or Publication Title:Nature Astronomy
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:1
DOI :10.1038/s41550-016-0007
Page Range:0007
Publisher:Nature Publishing Group
ISSN:2397-3366
Status:Published
Keywords:Ceres
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
Institute of Planetary Research > Planetary Geodesy
Deposited By: Schröder, Dr. Stefan
Deposited On:23 Dec 2016 10:42
Last Modified:13 Jun 2018 14:19

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