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Warm Debris Disks with SPICA
https://jaxa.repo.nii.ac.jp/records/3049
https://jaxa.repo.nii.ac.jp/records/3049bea7afb5-63a6-4784-a764-5a39e6ee2092
名前 / ファイル | ライセンス | アクション |
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AA1730027072.pdf (269.4 kB)
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Item type | 会議発表論文 / Conference Paper(1) | |||||
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公開日 | 2018-05-07 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Warm Debris Disks with SPICA | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_5794 | |||||
資源タイプ | conference paper | |||||
著者 |
尾中, 敬
× 尾中, 敬× 藤原, 英明× 石原, 大助× Onaka, Takashi× Fujiwara, Hideaki× Ishihara, Daisuke |
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著者所属 | ||||||
東京大学 | ||||||
著者所属 | ||||||
国立天文台ハワイ観測所 | ||||||
著者所属 | ||||||
名古屋大学 | ||||||
著者所属(英) | ||||||
en | ||||||
The University of Tokyo | ||||||
著者所属(英) | ||||||
en | ||||||
Subaru Telescope, National Astronomical Observatory of Japan | ||||||
著者所属(英) | ||||||
en | ||||||
Nagoya University | ||||||
出版者 | ||||||
出版者 | 宇宙航空研究開発機構(JAXA) | |||||
出版者(英) | ||||||
出版者 | Japan Aerospace Exploration Agency (JAXA) | |||||
書誌情報 |
宇宙航空研究開発機構特別資料 en : JAXA Special Publication: Proceedings of the SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe 巻 JAXA-SP-17-010E, p. 335-338, 発行日 2018-03-09 |
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会議概要(会議名, 開催地, 会期, 主催者等)(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | 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 | |||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Recent space infrared observations with Spitzer and AKARI have discovered excess emission in the mid-infrared around main-sequence stars, which suggests the presence of warm ( greater than 150 K) debris dust. These warm debris objects constitute a new class of debris disks distinct from those found in the far-infrared. A significant fraction of them show too high a fractional luminosity (a ratio of the excess to the stellar flux) to be accounted for by the steady-state collisional cascade model and often show solid features in the mid-infrared, some of which are attributed to silica, species rarely seen in other celestial objects. These facts suggest that they are formed by recent violent events, such as giant impacts or late heavy bombardments, the former of which have a direct link to the formation of terrestrial planets. While a variability of the features is predicted since they must originate in submicron-sized particles that will be blown out in a short time scale by the radiation from the central star, no systematic variation has so far been detected over 20-30 years except for a few cases, suggesting continuous replenishment of debris possibly from outer regions. Observations in the far-infrared are thus indispensable for the understanding of the origin and spatial distribution of the debris in these objects. Unprecedented sensitivities and wide field-of-views of MCS and SAFARI onboard SPICA enable us to make efficient imaging and spectroscopic surveys of warm debris disks from mid- to far-infrared and revolutionizes our understanding of the terrestrial plant formation for the first time. We discuss possible observations of warmdebris disks with SPICA to study the formation process of the warm debris and their relation to the formation of terrestrial planets. | |||||
内容記述 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 形態: カラー図版あり | |||||
内容記述(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Physical characteristics: Original contains color illustrations | |||||
ISSNONLINE | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2433-2232 | |||||
資料番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 資料番号: AA1730027072 | |||||
レポート番号 | ||||||
内容記述タイプ | Other | |||||
内容記述 | レポート番号: JAXA-SP-17-010E |