2008 Fiscal Year Final Research Report
Dust distribution in circumstellar disks as birthplaces of planetary systems by infrared spectroscopy with high spatial resolution
Project/Area Number |
19740097
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Single-year Grants |
Research Field |
Astronomy
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Research Institution | Ibaraki University |
Principal Investigator |
OKAMOTO Yoshiko Ibaraki University, 理学部, 准教授 (10343469)
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Project Period (FY) |
2007 – 2008
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Keywords | 赤外線天文学 / 惑星系形成 / 星周円盤 / 分光 / ダスト |
Research Abstract |
惑星系形成の場としての星周円盤の性質を、円盤ダストの空間分布の観点から明らかにするため、8mすばる望遠鏡の中間赤外線観測装置COMICS等を用いた星周円盤ダストの観測を進めた。この結果、いくつかの著しく広がった円盤を発見し、特に大きな広がりを持つ天体の性質を詳しく調べた。10太陽質量星周の円盤1個については、その10-1000AUスケールの構造・フレア構造・温度分布・ダストの性質などを解明した。この円盤は、太陽質量程度の星の周囲の円盤でも期待されるような熱的構造を示す一方で、存在するシリケイトダストの種類は、低質量星周とはかなり異なり、プラズマ等による変性の可能性が示唆される。
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Research Products
(12 results)
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[Journal Article] Detection of Water ICE Grains on the Surface of the Circumstellar Disk Around HD 1425272009
Author(s)
Honda, M., Inoue, A. K., Fukagawa, M., Oka, A., Nakamoto, T., Ishii, M., Terada, H., Takato, N., Kawakita, H., Okamoto, Y. K., Shibai, H., Tamura, M., Kudo, T., Itoh, Y.
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Journal Title
The Astrophysical Journal Letters 690
Pages: L110-L113
Peer Reviewed
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[Journal Article] Resolved 24.5 micron emission from massive young stellar objects2009
Author(s)
de Wit, W. J., Hoare, M. G., Fujiyoshi, T., Oudmaijer, R. D., Honda, M., Kataza, H., Miyata, T., Okamoto, Y. K., Onaka, T., Sako, S., Yamashita, T.
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Journal Title
Astronomy & Astrophysics 494
Pages: 157-178
Peer Reviewed
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[Journal Article] A Red Supergiant Nebula at 25 μm: Arcsecond-Scale Mass-Loss Asymmetries of μ Cephei2008
Author(s)
de Wit, W.J., Oudmaijer. R. D., Fujiyoshi, T., Hoare, M. G., Honda, M., Kataza, H., Miyata, T., Okamoto, Y. K., Onaka, T., Sako, S., Yamashita, T.
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Journal Title
The Astrophysical Journal 685
Pages: L75-L78
Peer Reviewed
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[Journal Article] Si and Fe depletion in Galactic star-forming regions observed by the Spitzer Space Telescope2008
Author(s)
Okada, Y. Onaka, T., Miyata, T., Okamoto, Y. K., Sakon, I., Shibai, H., Takahashi, H.
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Journal Title
The Astrophysical Journal 682
Pages: 416-433
Peer Reviewed
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[Journal Article] Mid-Infrared Observations of Planetary Nebula BD +30 3639: Evolution and Distribution of Unidentified IR Band Carriers2008
Author(s)
Matsumoto, H., Sakon, I., Onaka, T., Sako, S., Miyata, T., Kataza, H., Okada, Y., Okamoto, Y. K., Honda, M., Yamashita, T., Takahashi, H., Fujiyoshi, T.
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Journal Title
The Astrophysical Journal 677
Pages: 1120-1131
Peer Reviewed
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[Presentation] Map Analysis of Massive Star Forming Regions2009
Author(s)
Okamoto, Y. K., Murakami, N., Kataza, H., Ishihara, D., Figueredo, E., Doi, Y.
Organizer
AKARI, a light to illuminate the misty Universe
Place of Presentation
Fukutake Hall, The University of Tokyo, Tokyo, Japan
Year and Date
20090216-19
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[Presentation] Spatially resolved observations of 10micron emission around Herbig Ae/Be stars2008
Author(s)
Okamoto, Y. K., Kataza, H., Honda, M., Fujiwara, H., Miyata, T., Sako, S., Sakon, I., Onaka, T., Yamashita, T.
Organizer
Cosmic Dust Near & Far
Place of Presentation
Heidelberg, Germany
Year and Date
20080908-12
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