Extensive water ice within Ceres’ aqueously altered regolith: Evidence from nuclear spectroscopy-Reference-Cited by-同舟云学术

Extensive water ice within Ceres’ aqueously altered regolith: Evidence from nuclear spectroscopy

Published:2017-01-06 Issue:6320 Volume:355 Page:55-59
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Prettyman T. H.¹,Yamashita N.¹,Toplis M. J.²,McSween H. Y.³,Schörghofer N.⁴,Marchi S.⁵,Feldman W. C.¹,Castillo-Rogez J.⁶,Forni O.²,Lawrence D. J.⁷,Ammannito E.⁸,Ehlmann B. L.⁶⁹,Sizemore H. G.¹,Joy S. P.⁸,Polanskey C. A.⁶,Rayman M. D.⁶,Raymond C. A.⁶,Russell C. T.⁸

Affiliation:

1. Planetary Science Institute, 1700 East Fort Lowell, Suite 106, Tucson, AZ 85719-2395, USA.

2. Institut de Recherche d’Astrophysique et Planétologie, CNRS, Université Paul Sabatier, Toulouse 31400, France.

3. Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996-1410, USA.

4. University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822, USA.

5. Southwest Research Institute, Boulder, CO 80302, USA.

6. Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA 91109-8099, USA.

7. Johns Hopkins University, Applied Physics Laboratory, Laurel, MD 20723, USA.

8. Earth Planetary and Space Sciences, University of California, Los Angeles, Los Angeles, CA 90095-1567, USA.

9. Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA 91125, USA.

Abstract

Water ice beneath the surface of Ceres The dwarf planet Ceres in the inner solar system is thought to have a crust made of a mixture of rock and ice. Prettyman et al. used neutron and gamma-ray spectroscopy from the Dawn spacecraft to peer below Ceres' surface and map the subsurface composition. They found evidence for water ice across the dwarf planet, with water making up a larger fraction of the material near the poles than around the equator. Together with their measurements of other elements, these results aid our understanding of Ceres' composition and constrain models of its formation. Science , this issue p. 55

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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