DOI | 10.1126/science.aaz1701
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| An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime |
| Arakawa M.; Saiki T.; Wada K.; Ogawa K.; Kadono T.; Shirai K.; Sawada H.; Ishibashi K.; Honda R.; Sakatani N.; Iijima Y.; Okamoto C.; Yano H.; Takagi Y.; Hayakawa M.; Michel P.; Jutzi M.; Shimaki Y.; Kimura S.; Mimasu Y.; Toda T.; Imamura H.; Nakazawa S.; Hayakawa H.; Sugita S.; Morota T.; Kameda S.; Tatsumi E.; Cho Y.; Yoshioka K.; Yokota Y.; Matsuoka M.; Yamada M.; Kouyama T.; Honda C.; Tsuda Y.; Watanabe S.; Yoshikawa M.; Tanaka S.; Terui F.; Kikuchi S.; Yamaguchi T.; Ogawa N.; Ono G.; Yoshikawa K.; Takahashi T.; Takei Y.; Fujii A.; Takeuchi H.; Yamamoto Y.; Okada T.; Hirose C.; Hosoda S.; Mori O.; Shimada T.; Soldini S.; Tsukizaki R.; Iwata T.; Ozaki M.; Abe M.; Namiki N.; Kitazato K.; Tachibana S.; Ikeda H.; Hirata N.; Hirata N.; Noguchi R.; Miura A.
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发表日期 | 2020
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ISSN | 0036-8075
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卷号 | 368期号:6486 |
英文摘要 | The Hayabusa2 spacecraft investigated the small asteroid Ryugu, which has a rubble-pile structure. We describe an impact experiment on Ryugu using Hayabusa2's Small Carry-on Impactor. The impact produced an artificial crater with a diameter >10 meters, which has a semicircular shape, an elevated rim, and a central pit. Images of the impact and resulting ejecta were recorded by the Deployable CAMera 3 for >8 minutes, showing the growth of an ejecta curtain (the outer edge of the ejecta) and deposition of ejecta onto the surface. The ejecta curtain was asymmetric and heterogeneous and it never fully detached from the surface. The crater formed in the gravity-dominated regime; in other words, crater growth was limited by gravity not surface strength. We discuss implications for Ryugu's surface age. © 2020 American Association for the Advancement of Science. All rights reserved. |
关键词 | asteroidcraterequipmentgravityimage analysisspacecraftarticlegravity |
语种 | 英语
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来源机构 | Science
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文献类型 | 期刊论文
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条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/133582
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推荐引用方式 GB/T 7714 |
Arakawa M.,Saiki T.,Wada K.,et al. An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime[J]. Science,2020,368(6486).
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APA |
Arakawa M..,Saiki T..,Wada K..,Ogawa K..,Kadono T..,...&Miura A..(2020).An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime.,368(6486).
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MLA |
Arakawa M.,et al."An artificial impact on the asteroid (162173) Ryugu formed a crater in the gravity-dominated regime".368.6486(2020).
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