論文

査読有り
2018年4月1日

Implantation of martian materials in the inner solar system by a mega impact on mars

Astrophysical Journal Letters
  • Ryuki Hyodo
  • ,
  • Hidenori Genda

856
2
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.3847/2041-8213/aab7f0
出版者・発行元
Institute of Physics Publishing

Observations and meteorites indicate that the Martian materials are enigmatically distributed within the inner solar system. A mega impact on Mars creating a Martian hemispheric dichotomy and the Martian moons can potentially eject Martian materials. A recent work has shown that the mega-impact-induced debris is potentially captured as the Martian Trojans and implanted in the asteroid belt. However, the amount, distribution, and composition of the debris has not been studied. Here, using hydrodynamic simulations, we report that a large amount of debris (∼1% of Mars' mass), including Martian crust/mantle and the impactor's materials (∼20:80), are ejected by a dichotomy-forming impact, and distributed between ∼0.5-3.0 au. Our result indicates that unmelted Martian mantle debris (∼0.02% of Mars' mass) can be the source of Martian Trojans, olivine-rich asteroids in the Hungarian region and the main asteroid belt, and some even hit the early Earth. The evidence of a mega impact on Mars would be recorded as a spike of 40Ar-39Ar ages in meteorites. A mega impact can naturally implant Martian mantle materials within the inner solar system.


リンク情報
DOI
https://doi.org/10.3847/2041-8213/aab7f0
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000429051000003&DestApp=WOS_CPL
ID情報
  • DOI : 10.3847/2041-8213/aab7f0
  • ISSN : 2041-8213
  • ISSN : 2041-8205
  • SCOPUS ID : 85045556348
  • Web of Science ID : WOS:000429051000003

エクスポート
BibTeX RIS