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Title
  • en Precometary organic matter: A hidden reservoir of water inside the snow line
Creator
    • en Nakano, Hideyuki
    • en Hirakawa, Naoki
    • en Matsubara, Yasuhiro
    • en Yamashita, Shigeru
    • en Okuchi, Takuo
    • en Asahina, Kenta
    • en Tanaka, Ryo
    • en Suzuki, Noriyuki
    • en Naraoka, Hiroshi
    • en Takano, Yoshinori
    • en Tachibana, Shogo
    • en Hama, Tetsuya
    • en Oba, Yasuhiro
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Rights
Subject
  • NDC 440
Description
  • Abstract en The origin and evolution of solar system bodies, including water on the Earth, have been discussed based on the assumption that the relevant ingredients were simply silicates and ices. However, large amounts of organic matter have been found in cometary and interplanetary dust, which are recognized as remnants of interstellar/precometary grains. Precometary organic matter may therefore be a potential source of water; however, to date, there have been no experimental investigations into this possibility. Here, we experimentally demonstrate that abundant water and oil are formed via the heating of a precometary-organic-matter analog under conditions appropriate for the parent bodies of meteorites inside the snow line. This implies that H2O ice is not required as the sole source of water on planetary bodies inside the snow line. Further, we can explain the change in the oxidation state of the Earth from an initially reduced state to a final oxidized state. Our study also suggests that petroleum was present in the asteroids and is present in icy satellites and dwarf planets.
Publisher en Nature Publishing Group
Date
    Issued2020-05-08
Language
  • eng
Resource Type journal article
Version Type NA
Identifier HDL http://hdl.handle.net/2115/79474
Relation
  • isIdenticalTo DOI https://doi.org/10.1038/s41598-020-64815-6
Journal
    • PISSN 2045-2322
      • en Scientific reports
      • Volume Number10 Issue Number1 Page Start7755
Oaidate 2023-07-26