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Liquid-like behavior of UV-irradiated interstellar ice analog at low temperatures.
Tachibana, Shogo; Kouchi, Akira; Hama, Tetsuya; Oba, Yasuhiro; Piani, Laurette; Sugawara, Iyo; Endo, Yukiko; Hidaka, Hiroshi; Kimura, Yuki; Murata, Ken-Ichiro; Yurimoto, Hisayoshi; Watanabe, Naoki.
Afiliação
  • Tachibana S; Department of Natural History Sciences, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
  • Kouchi A; Institute of Low Temperature Science, Hokkaido University, Sapporo, Hokkaido 060-0819, Japan.
  • Hama T; Institute of Low Temperature Science, Hokkaido University, Sapporo, Hokkaido 060-0819, Japan.
  • Oba Y; Institute of Low Temperature Science, Hokkaido University, Sapporo, Hokkaido 060-0819, Japan.
  • Piani L; Department of Natural History Sciences, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
  • Sugawara I; Department of Natural History Sciences, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
  • Endo Y; Department of Natural History Sciences, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
  • Hidaka H; Institute of Low Temperature Science, Hokkaido University, Sapporo, Hokkaido 060-0819, Japan.
  • Kimura Y; Institute of Low Temperature Science, Hokkaido University, Sapporo, Hokkaido 060-0819, Japan.
  • Murata KI; Institute of Low Temperature Science, Hokkaido University, Sapporo, Hokkaido 060-0819, Japan.
  • Yurimoto H; Department of Natural History Sciences, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan.
  • Watanabe N; Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan.
Sci Adv ; 3(9): eaao2538, 2017 09.
Article em En | MEDLINE | ID: mdl-28975154
ABSTRACT
Interstellar ice is believed to be a cradle of complex organic compounds, commonly found within icy comets and interstellar clouds, in association with ultraviolet (UV) irradiation and subsequent warming. We found that UV-irradiated amorphous ices composed of H2O, CH3OH, and NH3 and of pure H2O behave like liquids over the temperature ranges of 65 to 150 kelvin and 50 to 140 kelvin, respectively. This low-viscosity liquid-like ice may enhance the formation of organic compounds including prebiotic molecules and the accretion of icy dust to form icy planetesimals under certain interstellar conditions.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2017 Tipo de documento: Article
Texto completo
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XML
PubMed Links
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2017 Tipo de documento: Article