2013 Fiscal Year Final Research Report
Understanding of the fate of dust in nearby galaxies using AKARI far-infrared data
| Project/Area Number |
22340043
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | Nagoya University |
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Principal Investigator |
KANEDA Hidehiro 名古屋大学, 理学(系)研究科(研究院), 教授 (30301724)
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| Co-Investigator(Kenkyū-buntansha) |
ONAKA Takashi 東京大学, 理学系研究会, 教授 (30143358)
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| Project Period (FY) |
2010-04-01 – 2013-03-31
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| Keywords | 近傍銀河 / 星間ダスト / 宇宙赤外線観測 |
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| Research Abstract |
For the present study, I used the data of the infrared astronomical satellite, AKARI, which were taken in the obervational programs, "the interstellar medium in our Galaxy and nearby galaxies," and "all-sky surveys". Improving the method to process AKARI far-infrared imaging data, I have elucidated the evolution of dust grains in various interstellar environments of nearby galaxies. Because AKARI covered all the sky with improved sensitivities, I derived information on properties of dust in various harsh environments, providing entirely new knowledge on the shattering and destruction of dust, and processing of polycyclic aromatic hydrocarbons (PAHs). In particular, I find that copious amounts of dust are flowing out of galaxies by galactic superwinds, enriching the intergalactic space with dust. I also reveal the presence of PAHs in elliptical galaxies with unusual spectral features, demonstrating importance of the material processing in the interstellar space.
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Research Products
(32 results)
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[Presentation] Properties of dust and PAHs in various environments of nearby galaxies2013
Author(s)
H. Kaneda, D. Ishihara, S. Oyabu, T. Suzuki, T. Onaka, I. Sakon, M. Yamagishi, T. Kondo, R. Yamada, K. Kobata
Organizer
The lifecycle of dust in the universe
Place of Presentation
ASIAA, Taiwan
Year and Date
2013-09-19
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[Presentation] Interstellar dust and PAHs in our Galaxy and nearby galaxies: from AKARI to SPICA2013
Author(s)
H. Kaneda, K. Enya, K. Haze, D. Ishihara, T. Kotani, S. Oyabu, T. Kondo, S. Oseki, N. Takeuchi, M. Yamagishi, A. Yasuda, T. Onaka, T. Suzuki
Organizer
From Planets to Distant Galaxies. SPICA' s New Window on the Cool Universe
Place of Presentation
Tokyo
Year and Date
2013-06-20
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[Presentation] Processing of interstellar dust grains in galaxies revealed by AKARI2012
Author(s)
H. Kaneda, D. Ishihara, K. Kobata, T. Kondo, M. Yamagishi, A. Yasuda, T. Onaka, I. Sakon, T. Suzuki
Organizer
International Astronomical Union, Symposium 292
Place of Presentation
Beijing,China
Year and Date
2012-08-24
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