Boulders on asteroid Toutatis as observed by Chang'e-2

CORC > 紫金山天文台 > 中国科学院紫金山天文台 > 行星科学与深空探测实验室

	Boulders on asteroid Toutatis as observed by Chang'e-2
	Jiang, Yun1 ; Ji, Jianghui1 ; Huang, Jiangchuan 2; Marchi, Simone 3; Li, Yuan 4; Ip, Wing-Huen 4,5
刊名	SCIENTIFIC REPORTS
	2015-11-02
卷号	5
英文摘要	Boulders are ubiquitously found on the surfaces of small rocky bodies in the inner solar system and their spatial and size distributions give insight into the geological evolution and collisional history of the parent bodies. Using images acquired by the Chang'e-2 spacecraft, more than 200 boulders have been identified over the imaged area of the near-Earth asteroid Toutatis. The cumulative boulder size frequency distribution (SFD) shows a steep slope of -4.4 +/- 0.1, which is indicative of a high degree of fragmentation. Similar to Itokawa, Toutatis probably has a rubble-pile structure, as most boulders on its surface cannot solely be explained by impact cratering. The significantly steeper slope for Toutatis' boulder SFD compared to Itokawa may imply a different preservation state or diverse formation scenarios. In addition, the cumulative crater SFD has been used to estimate a surface crater retention age of approximately 1.6 +/- 0.3 Gyr.
WOS标题词	Science & Technology
类目[WOS]	Multidisciplinary Sciences
研究领域[WOS]	Science & Technology - Other Topics
关键词[WOS]	EJECTA BLOCKS ; SPIN-STATE ; HAYABUSA ; ITOKAWA ; IMAGES ; CRATER ; IMPACT ; SIZE ; 25143-ITOKAWA ; REGOLITH
收录类别	SCI
语种	英语
WOS记录号	WOS:000363878100001
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/16034]
专题	紫金山天文台_行星科学与深空探测实验室
作者单位	1.Chinese Acad Sci, Purple Mt Observ, Key Lab Planetary Sci, Nanjing 210008, Peoples R China 2.China Acad Space Technol, Beijing 100094, Peoples R China 3.Southwest Res Inst, Boulder, CO 80302 USA 4.Macau Univ Sci & Technol, Space Sci Inst, Taipa, Macau, Peoples R China 5.Natl Cent Univ, Inst Astron, Taoyuan, Taiwan
推荐引用方式 GB/T 7714	Jiang, Yun,Ji, Jianghui,Huang, Jiangchuan,et al. Boulders on asteroid Toutatis as observed by Chang'e-2[J]. SCIENTIFIC REPORTS,2015,5.
APA	Jiang, Yun,Ji, Jianghui,Huang, Jiangchuan,Marchi, Simone,Li, Yuan,&Ip, Wing-Huen.(2015).Boulders on asteroid Toutatis as observed by Chang'e-2.SCIENTIFIC REPORTS,5.
MLA	Jiang, Yun,et al."Boulders on asteroid Toutatis as observed by Chang'e-2".SCIENTIFIC REPORTS 5(2015).