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Proceedings Paper

Mapping the elemental composition of Ceres and Vesta: Dawn’s gamma ray and neutron detector
Author(s): Thomas H. Prettyman; William C. Feldman; Bruce L. Barraclough; Maria Teresa Capria; Angioletta Coradini; D. C. Enemark; Kenneth R. Fuller; David J. Lawrence; D. E. Patrick; Carol A. Raymond; S. A. Storms; R. L. Williford
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Paper Abstract

Dawn is a NASA discovery mission that will explore the main belt asteroids (1) Ceres and (4) Vesta. Ceres and Vesta are among the oldest bodies in the solar system and represent very different evolutionary paths. By studying these ancient, complementary asteroids, we will answer fundamental questions about the early solar system and planetary formation processes. The Dawn payload consists of a Framing Camera (FC), a visual and infrared mapping spectrometer (VIR), and a Gamma Ray and Neutron Detector (GRaND). The instruments provide data needed to investigate the structure, geology, mineralogy, and geochemistry of the asteroids. GRaND provides the data for the geochemistry investigation, including maps of most major elements and selected radioactive and trace elements. An updated description of the GRaND instrument is given along with the expected performance of GRaND at Vesta and Ceres. Approaches to combine data from FC, VIR and GRaND are discussed.

Paper Details

Date Published: 30 December 2004
PDF: 10 pages
Proc. SPIE 5660, Instruments, Science, and Methods for Geospace and Planetary Remote Sensing, (30 December 2004); doi: 10.1117/12.578551
Show Author Affiliations
Thomas H. Prettyman, Los Alamos National Lab. (United States)
William C. Feldman, Los Alamos National Lab. (United States)
Bruce L. Barraclough, Los Alamos National Lab. (United States)
Maria Teresa Capria, INAF (Italy)
Angioletta Coradini, INAF (Italy)
D. C. Enemark, Los Alamos National Lab. (United States)
Kenneth R. Fuller, Los Alamos National Lab. (United States)
David J. Lawrence, Los Alamos National Lab. (United States)
D. E. Patrick, Los Alamos National Lab. (United States)
Carol A. Raymond, Jet Propulsion Lab. (United States)
S. A. Storms, Los Alamos National Lab. (United States)
R. L. Williford, Los Alamos National Lab. (United States)


Published in SPIE Proceedings Vol. 5660:
Instruments, Science, and Methods for Geospace and Planetary Remote Sensing
Carl A. Nardell; Paul G. Lucey; Jeng-Hwa Yee; James B. Garvin, Editor(s)

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