Dust distribution in circumstellar disks as birthplaces of planetary systems by infrared spectroscopy with high spatial resolution

• Project/Area Number: 19740097
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Astronomy
• Research Institution: Ibaraki University
• Principal Investigator: OKAMOTO Yoshiko Ibaraki University, 理学部, 准教授 (10343469)
• Project Period (FY): 2007 – 2008
• Project Status: Completed (Fiscal Year 2008)
• Budget Amount: ¥2,630,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥330,000); Fiscal Year 2008: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2007: ¥1,200,000 (Direct Cost: ¥1,200,000)
• Keywords: 赤外線天文学 / 惑星系形成 / 星周円盤 / 分光 / ダスト / 星・惑星系形成

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。

Research Products

• [Journal Article] Detection of Water ICE Grains on the Surface of the Circumstellar Disk Around HD 142527 (2009)
  • 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.
  • Journal Title: The Astrophysical Journal Letters 690
  • Peer Reviewed
• [Journal Article] Resolved 24.5 micron emission from massive young stellar objects (2009)
  • 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.
  • Journal Title: Astronomy & Astrophysics 494 Pages: 157-178
  • Peer Reviewed
• [Journal Article] すばるによる中間赤外線観測で見えてきた惑星形成の現場 (2009)
  • Author(s): 藤原 英明、岡本 美子、本田 充彦
  • Journal Title: 天文月報 102 Pages: 108-117
  • NAID: 10024590617
• [Journal Article] Detection of Water ICE Grains on the Surface of the Circumstellar Disk Around HD 142527 (2009)
  • Author(s): M. Honda, A.K. Inoue, M. Fukagawa, A. Oka, T. Nakamoto, M. Ishii, H. Terada, N. Takato, H. Kawakita, Y.K. Okamoto, H. Shibai, M. Tamura, T. Kudo, Y. Itoh
  • Journal Title: The Astrophysical Journal Letters 690
  • Peer Reviewed
• [Journal Article] Resolved 24.5 micron emission from massive young stella robjects (2009)
  • Author(s): W. J. de Wit, M. G. Hoare, T. Fujiyoshi, R. D. Oudmaijer , M. Honda, H. Kataza, T. Miyata, Y. K. Okamoto, T. Onaka, S. Sako, T. Yamashita
  • Journal Title: Astronomy and Astrophysics 494 Pages: 157-178
  • Peer Reviewed
• [Journal Article] すばるによる中間赤外線観測で見えてきた惑星形成の現場 (2009)
  • Author(s): 藤原英明、岡本美子、本田充彦
  • Journal Title: 天文月報 102 Pages: 108-117
  • NAID: 10024590617
• [Journal Article] A Red Supergiant Nebula at 25 μm: Arcsecond-Scale Mass-Loss Asymmetries of μ Cephei (2008)
  • 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.
  • Journal Title: The Astrophysical Journal 685
  • Peer Reviewed
• [Journal Article] Si and Fe depletion in Galactic star-forming regions observed by the Spitzer Space Telescope (2008)
  • Author(s): Okada, Y. Onaka, T., Miyata, T., Okamoto, Y. K., Sakon, I., Shibai, H., Takahashi, H.
  • Journal Title: The Astrophysical Journal 682 Pages: 416-433
  • Peer Reviewed
• [Journal Article] Mid-Infrared Observations of Planetary Nebula BD +30 3639: Evolution and Distribution of Unidentified IR Band Carriers (2008)
  • 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.
  • Journal Title: The Astrophysical Journal 677 Pages: 1120-1131
  • Peer Reviewed
• [Journal Article] A Red Supergiant Nebula at 25 μm : Arcsecond-Scale Mass-Loss Asymmetries of μ Cephei (2008)
  • Author(s): W. J. de Wit, R. D. Oudmaijer, T. Fujiyoshi, M. G. Hoare, M. Honda, H. Kataza, T. Miyata, Y. K. Okamoto, T. Onaka, S. Sako, T. Yamashita
  • Journal Title: The Astrophysical Journal 685
  • Peer Reviewed
• [Journal Article] Si and Fe depletion in Galactic star-forming regions observed by the Spitzer Space Telescope (2008)
  • Author(s): Y. Okada, T. Onaka, T. Miyata, Y. K. Okamoto, I. Sakon, H. Shibai, H. Takahashi
  • Journal Title: The Astrophysical Journal 682 Pages: 416-433
  • Peer Reviewed
• [Journal Article] Mid-Infrared Observations of Planetary Nebula BD +30 36 39 : Evolution and Distribution of Unidentified IR Band Carriers (2008)
  • Author(s): H. Matsumoto, I. Sakon, T. Onaka, S. i Sako, T. i Miyata, H. Kataza, Y. Okada, Y. K. Okamoto, M. Honda, T. Yamashita, H. Takahashi, T. Fujiyoshi
  • Journal Title: The Astrophysical Journal 677 Pages: 1120-1131
  • Peer Reviewed
• [Journal Article] Si and Fe Depletion in Star-forming Regions Probed by Infrared Speetroscopy (2007)
  • Author(s): Y. Okada, Onaka, Miyata, Sakon, Takaliashi, Okamoto & Shibai
  • Journal Title: Mapping the Galaxy and Nearby Galaxies, Astrophysics and Space Science Proceedings Pages: 366-366
• [Journal Article] The Mid-Infrared Properties of Embedded Super Star Clusters in He2-10 and IIZw40 (2007)
  • Author(s): Sakon, Onaka, Takaheshi, Miyata, Sako, Tajiri, Okamoto, et. al.
  • Journal Title: Galaxy Evolution Across the Hubble Time, Proceedmgs of the 235th Symposium of the IAU Pages: 329-329
• [Presentation] Map Analysis of Massive Star Forming Regions (2009)
  • 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
• [Presentation] Herbig Ae型星HD31648の星周ガス円盤12CO(J=1-0,3-2) (2008)
  • Author(s): 嶋田翔太・百瀬宗武・岡本美子
  • Organizer: 日本天文学会2008年春季年会
  • Place of Presentation: 国立オリンピック記念青少年総合センター
  • Year and Date: 2008-03-27
• [Presentation] Herbig Be型星HD200775の星周円盤の10μm帯中間赤外線分光 (2008)
  • Author(s): 岡本美子・ほか
  • Organizer: 日本天文学会2008年春季年会
  • Place of Presentation: 国立オリンピック記念青少年総合センター
  • Year and Date: 2008-03-26
• [Presentation] Spatially resolved observations of 10micron emission around Herbig Ae/Be stars (2008)
  • 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
• [Presentation] Herbig Be型星HD200775の星周円盤の10μm帯中間赤外線分光 (2008)
  • Author(s): 岡本美子、片坐宏一、本田充彦、藤原英明、宮田隆志、酒向重行、左近樹、尾中敬、山下卓也
  • Organizer: 日本天文学会2008年春季年会
  • Place of Presentation: 東京
• [Presentation] Subaru Strategic Exploration of Exoplanets and Disks with HiCIAO/AO188 (SEEDS): Proposal (2008)
  • Author(s): 田村元秀、臼田知史、高見英樹、山田亨、高見道弘、神鳥亮、松尾太郎、鈴木竜二、森野潤一、石井未来、工藤智幸、橋本淳、岡本美子、佐藤文衛、片坐宏一、大橋永芳、E. Turner、A. Moro-Martin、SEEDS team
  • Organizer: 日本天文学会2008年春季年会
  • Place of Presentation: 東京
• [Presentation] Spatially resolved observations of 10micron emission ar ound Herbig Ae/Be stars (2008)
  • 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: ハイデルベルク(ドイツ)
• [Presentation] Protoplanetary Disks and Debris Disks Revealed by Mid-infrared Observations with High Spectral Resolution (2007)
  • Author(s): Okamoto, Y. K.
  • Organizer: Science in the Era of TMT
  • Place of Presentation: Beckman Center, Irvine, CA, U.S.
• [Book] シリーズ現代の天文学第6巻 星間物質と星形成(第4章共同担当) (2008)
  • Author(s): 福井康雄, 大西利和, 中井直正, 犬塚修一郎, 水野亮, 舞原俊憲 編
  • Publisher: 日本評論社, ISBN 978-4535607262
• [Book] シリーズ現代の天文学第6巻星間物質と星形成 (2008)
  • Author(s): 福井康雄, 他編(4章共同執筆担当)
  • Total Pages: 325
  • Publisher: 日本評論社
• [Remarks]
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• [Remarks] 茨城大学研究者情報総覧
  • URL: http://info.ibaraki.ac.jp/scripts/websearch/index.htm