SPICA Spectroscopy of Cometary Refractory and Icy Dust Grains

• 古荘, 玲子

• 大坪, 貴文

• 本田, 充彦

• 渡部, 潤一

• 布施, 哲治

• 石黒, 正晃

• Furusho, Reiko

• Otsubo, Takafumi

• Honda, Mitsuhiko

• Watanabe, Junichi

• Fuse, Tetsuharu

• Ishiguro, Masateru

抄録

SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe (June 18-21, 2013. Ito Hall, the University of Tokyo), Bunkyou-ku, Tokyo, Japan

We propose mid/far-infrared spectroscopy of comets to study (1) precise astromineralogy of cometary refractory dust and, (2) environment of H2O ice formation (temperature and gas density) in the early solar nebula. The mid/far-infrared spectroscopy is a powerful diagnostic tool to investigate the size, shape, and chemical composition of cometary dust, so that it will enable us to reveal the process of refractory grain growth and radial transportation of dust grains in the early solar nebula. However, it is not easy to disentangle constituent minerals clearly only with the 10 μm-band of ground-based observations. The crystalline silicate bands at 33, 49, and 69 μm are a clue to investigate the dust size and chemical composition. Whether cometary H2O icy dust grain is amorphous or crystalline reflects its formation environment (temperature and gas density). The H2O ice bands are at 6, 12, 44 and 65 μm. Since the reason why crystalline H2O icy grains were detected in a few comets is still unclear, statistical study on the abundance of the cometary crystalline H2O ice dust is important to reveal the history of formation and evolution of the comets.

形態: カラー図版あり

Physical characteristics: Original contains color illustrations

資料番号: AA1730027085

レポート番号: JAXA-SP-17-010E

収録刊行物

• 宇宙航空研究開発機構特別資料 = JAXA Special Publication: Proceedings of the SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe

  宇宙航空研究開発機構特別資料 = JAXA Special Publication: Proceedings of the SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe JAXA-SP-17-010E 387-388, 2018-03-09

  宇宙航空研究開発機構(JAXA)

詳細情報

• CRID: 1050574036225170816
• NII論文ID: 120006827292
• ISSN: 24332232
• Web Site: http://id.nii.ac.jp/1696/00003056/
• 本文言語コード: en
• 資料種別: conference paper
• データソース種別:
  • IRDB
  • CiNii Articles