| タイトル | Space Weathering on 4 Vesta: Processes and Products |
| 本文（外部サイト） | http://hdl.handle.net/2060/20120002987 |
| 著者（英） | Nathues, A.; Pieters, C. M.; Mittlefehldt, D. W.; Gaffey, M.; Marchi, S.; Palmer, E. E.; Reddy, V.; Ammannito, E.; Blewett, D. T.; Sunshine, J. M.; Denevi, B. W.; Li, J. Y.; Raymond, C. A.; McCord, T. B.; Russell, C. T.; De Sanctis, M. C. |
| 著者所属（英） | NASA Johnson Space Center |
| 発行日 | 2012-03-19 |
| 言語 | eng |
| 内容記述 | The bulk properties of Vesta have previously been linked directly to the howardite, eucrite, and diogenite (HED) meteorites through remote mineral characterization of its surface from Earth-based spectroscopy [e.g., 1]. A long-standing enigma has been why does Vesta s surface appear to have suffered so little alteration from the space environment, whereas materials exposed on the Moon and some S-type asteroids are significantly changed (grains develop rims containing nano-phase opaques [e.g. 2]). The Dawn spacecraft is well suited to address this issue and is half through its extended mapping phase of this remarkable proto-planet [3]. On a local scale Dawn sees evidence of recent exposures at craters, but distinctive surface materials blend into background at older craters. The presence of space weathering processes are thus evident at Vesta, but the character and form are controlled by the unique environment and geologic history of this small body. |
| NASA分類 | Economics and Cost Analysis |
| レポートNO | JSC-CN-25713 |
| 権利 | Copyright, Distribution as joint owner in the copyright |
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