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タイトル
  • Sounding-rocket microgravity experiments on alumina dust
作成者

Ishizuka, Shinnosuke

Kimura, Yuki

Sakon, Itsuki

Kimura, Hiroshi

Yamazaki, Tomoya

Takeuchi, Shinsuke

Inatomi, Yuko

権利情報
    • http://creativecommons.org/licenses/by/4.0/
主題
  • Other microgravity experiments
  • Other alumina dust
  • NDC 420
内容注記
Other
  • Alumina (Al2O3) is believed to be the first major condensate to form in the gas outflow from oxygen-rich evolved stars because of the refractoriness and that alpha-Al2O3. (corundum, most stable polymorph) is a potential origin of a 13 mu m feature that appears close to stars. However, no one has directly reproduced the 13 mu m feature experimentally, and it has remained as a noteworthy unidentified infrared band. Here, we report nucleation experiments on Al2O3 nanoparticles monitored by a specially designed infrared spectrometer in the microgravity environment of a sounding rocket. The conditions approximate to those around asymptotic giant branch (AGB) stars. The measured spectra of the nucleated Al2O3 show a sharp feature at a wavelength of 13.55 mu m and comparable in width to that observed near oxygen-rich AGB stars. Our finding that alpha-Al(2)O(3 )nucleates under certain condition provides a solid basis to elaborate condensation models of dust around oxygen-rich evolved stars.
出版者Nature Publishing Group
日付 Issued 2018-09-19
言語eng
資源タイプjournal article
出版タイプVoR
資源識別子 URI http://hdl.handle.net/2115/71742
関連
  • isIdenticalTo DOI https://doi.org/10.1038/s41467-018-06359-y
収録誌情報
    • ISSN 2041-1723
    • Nature communications
    9, 3820
ファイル
コンテンツ更新日時2018-10-30T09:57:49Z