期刊
METEORITICS & PLANETARY SCIENCE
卷 49, 期 9, 页码 1698-1719出版社
WILEY-BLACKWELL
DOI: 10.1111/maps.12136
关键词
-
资金
- NASA [NNH11AQ61I, NNX09AC36G]
- NASA Origins of Solar Systems Program
- Tawani Foundation
- DFG [SPP1385]
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-98CH10886]
- NASA [NNX09AC36G, 120410] Funding Source: Federal RePORTER
- STFC [ST/K000888/1, ST/K001000/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/K001000/1, ST/K000888/1] Funding Source: researchfish
- Grants-in-Aid for Scientific Research [25108003] Funding Source: KAKEN
The Stardust Interstellar Preliminary Examination team analyzed thirteen Al foils from the NASA Stardust interstellar collector tray in order to locate candidate interstellar dust (ISD) grain impacts. Scanning electron microscope (SEM) images reveal that the foils possess abundant impact crater and crater-like features. Elemental analyses of the crater features, with Auger electron spectroscopy, SEM-based energy dispersive X-ray (EDX) spectroscopy, and scanning transmission electron microscope-based EDX spectroscopy, demonstrate that the majority are either the result of impacting debris fragments from the spacecraft solar panels, or intrinsic defects in the foil. The elemental analyses also reveal that four craters contain residues of a definite extraterrestrial origin, either as interplanetary dust particles or ISD particles. These four craters are designated level 2 interstellar candidates, based on the crater shapes indicative of hypervelocity impacts and the residue compositions inconsistent with spacecraft debris.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据