Approach to astrominelarogy based on the density functional theory

• Project/Area Number: 26610043
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Astronomy
• Research Institution: The University of Tokyo
• Principal Investigator: Onaka Takashi 東京大学, 大学院理学系研究科(理学部), 教授 (30143358)
• Research Collaborator: Joblin Christine Instite de Recherche en Astrophysique, 主任研究員 ; Pathak Amit Tezpur University, 物理学科, 准教授 ; Wu Roni Paris Observatory, 研究員 ; Swami Mahadevappa Naganathappa Gitam University, 物理学科, 助教
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
• Keywords: 星間塵 / 宇宙鉱物学 / 赤外線観測 / 密度汎関数理論 / 星間物理学

Outline of Final Research Achievements

Fine structures of the infrared bands of crystalline materials seen in celestial objects are expected to provide the properties and composition of the materials, leading to astromineralogy. However, due to the lack of theoretical identifications of the vibration modes, comparison of observational data with laboratory data is limited to empirical investigations and full power of astromineralogy has not been developed. In this research we apply the density functional theory (DFT)to the calculation of vibration modes of minerals of astronomical interest and the basis of comparison with observations is obtained. The DFT calculation is also applied to organics and the deuterium content in interstellar organic materials is investigated. Comparison with observations based on the DFT calculations suggests that the deuterium content in organic materials is by an order of magnitude smaller than theoretically suggested.

Research Products

• [Int'l Joint Research] Tezpur University/Gitam University(インド)
• [Int'l Joint Research] Saclay Nuclear Research Center/IRAP/Paris Observatory(フランス)
• [Int'l Joint Research] Tezpur University(India)
• [Journal Article] Deuterated Polycyclic Aromatic Hydrocarbons: Revisited (2016)
  • Author(s): Doney, K., D., Candian, A., Mori, T., Onaka, T., and Tielens, A. G. G. M.,
  • Journal Title: Astronomy and Astrophysics Volume: 586 Pages: A65-A65
  • DOI: 10.1051/0004-6361/201526809
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Concurrent Formation of Carbon and Silicate Dust in Nova V1280 Sco (2016)
  • Author(s): Sakon, I., Sako, S., Onaka, T., Nozawa, T., Kimura, Y., Fujiyoshi, T., Shimonishi, T., Usui, F., Takahashi, H., Ohsawa, R., Arai, A., Uemura, M., Nagayama, T., Koo, B-C., and Kozasa, T.
  • Journal Title: The Astrophysical Journal Volume: 817 Issue: 2 Pages: 145-167
  • DOI: 10.3847/0004-637x/817/2/145
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Mid-infrared vibrational study of deuterium-containing PAH variants (2016)
  • Author(s): Buragohain, M., Pathak, A., Sarre, P., Onaka, T., & Sakon, I.
  • Journal Title: Planetary and Space Science Volume: 133 Pages: 97-106
  • DOI: 10.1016/j.pss.2016.05.001
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Organic dust in galaxies (2016)
  • Author(s): Onaka, T.
  • Journal Title: Journal of Physics Conference series Volume: 728
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Variations in the 3.3 micron mete feature and carbonaceous dust in AKARI data, (2015)
  • Author(s): Hammonds, M., Mori, T., Usus, F., and Onaka, T.
  • Journal Title: Planetary and Space Science Volume: 116 Pages: 73-83
  • DOI: 10.1016/j.pss.2015.05.010
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] The mixed aliphatic/aromatic composition of evaporating very small grains in NGC 7023 viewed by the 3.4/3.3 micron meter ratio (2015)
  • Author(s): Pilleri, P., Joblin, C., Boulanger, F., and Onaka, T.,
  • Journal Title: Astronomy and Astrophysics Volume: 577 Pages: A16-A16
  • DOI: 10.1051/0004-6361/201425590
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Dust processing in the Carina nebula region (2015)
  • Author(s): Onaka, T., Mori, T. I., and Okada, Y.
  • Journal Title: Planetary and Space Science Volume: 116 Pages: 84-91
  • DOI: 10.1016/j.pss.2015.03.025
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Systematic Variations in CO2/H2O Ice Abundance Ratios in Nearby Galaxies Found with AKARI Near-Infrared Spectroscopy (2015)
  • Author(s): Yamagishi, M., Kaneda, H., Ishiara, D., Oyabu, S., Onaka, T. Shimonishi, T., and Suzuki, T.
  • Journal Title: Astrophysical Journal Volume: 807 Issue: 1 Pages: 1-7
  • DOI: 10.1088/0004-637x/807/1/29
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] An overview of AKARI observations of the interstellar medium (2015)
  • Author(s): Onaka, T.
  • Journal Title: Asian Journal of Physics Volume: 24
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Theoretical study of deuteronated PAHs as carriers for IR emission features in the ISM, (2015)
  • Author(s): Buragohain, M., Pathak, A., Sarre, P., Onaka, T., and Sakon, I.
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 454 Issue: 1 Pages: 193-204
  • DOI: 10.1093/mnras/stv1946
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Near-Infrared Spectroscopy of the Diffuse Galactic Emission (2015)
  • Author(s): T. Onaka, I. Sakon, R. Ohsawa, T. I. Mori, H. Kaneda, M. Tanaka, Y. Okada, F. Boulanger, C. Joblin, and P. Pilleri
  • Journal Title: Highlights in Astronomy Volume: 16 Issue: H16 Pages: 703-704
  • DOI: 10.1017/s1743921314012976
  • Open Access / Acknowledgement Compliant
• [Presentation] AKARI observations of mergers: PAH emission as a star-formation probe in tidal tails of galaxies (2017)
  • Author(s): Onaka, T., Nakamura, T., Sakon, I., Ohsawa, R., Wu, R., and Kaneda, H.
  • Organizer: Star Formation and Nearby Galaxies with JWST
  • Place of Presentation: Caltech, U.S.A.
  • Year and Date: 2017-01-18
  • Int'l Joint Research
• [Presentation] Dust in galaxies (2016)
  • Author(s): Onaka, T.
  • Organizer: workshop University of ENS and University of Tokyo and
  • Place of Presentation: ENS, France
  • Year and Date: 2016-11-16
  • Int'l Joint Research / Invited
• [Presentation] AKARI results on PAH emission (2016)
  • Author(s): Onaka, T.
  • Organizer: The Past and Future of AstroPAH Research
  • Place of Presentation: Noordwijk, The Netherlands
  • Year and Date: 2016-10-30
  • Int'l Joint Research / Invited
• [Presentation] Deuterated organic dust in space (2016)
  • Author(s): Onaka, T., Mori, T., and Sakon, I.
  • Organizer: The 9th meeting on Cosmic Dust
  • Place of Presentation: 東北大学
  • Year and Date: 2016-08-15
  • Int'l Joint Research
• [Presentation] AKARI mid-infrared all-sky survey: A New PAH emission map (2016)
  • Author(s): Onaka, T.
  • Organizer: AME workshop 2016,
  • Place of Presentation: ESTEC, The Netherlands
  • Year and Date: 2016-06-22
  • Int'l Joint Research
• [Presentation] 星間ダストサイズ分布 (2016)
  • Author(s): 尾中 敬
  • Organizer: サイズ分布ビッグピクチャー研究会
  • Place of Presentation: 千葉工業大学スカイツリータウンキャンパス（東京都墨田区）
  • Year and Date: 2016-02-11
  • Invited
• [Presentation] Interstellar ices as revealed by AKARI near-infrared spectroscopy (2015)
  • Author(s): Onaka, T., Mori, T. I., Sakon, I., and Shimonishi, T.,
  • Organizer: Cosmic Dust VIII
  • Place of Presentation: 千葉工業大学スカイツリータウンキャンパス（東京都墨田区）
  • Year and Date: 2015-08-17
  • Int'l Joint Research
• [Presentation] Organic dust in galaxies, (2015)
  • Author(s): Onaka, T.
  • Organizer: The 11th Pacific Rim Conference on Stellar Astrophysics
  • Place of Presentation: Hong Kong, PR China
  • Year and Date: 2015-08-17
  • Int'l Joint Research / Invited
• [Presentation] Mid-infrared vibrational study of substituted PAHs: implications to aromatic infrared bands (2015)
  • Author(s): Buragohain, M., Pathak, M., Sarre, P., Onaka, T., and Sakon, I.
  • Organizer: Cosmic Dust VIII
  • Place of Presentation: T千葉工業大学スカイツリータウンキャンパス（東京都墨田区）
  • Year and Date: 2015-08-17
  • Int'l Joint Research
• [Presentation] AKARI near-infrared spectroscopy of interstellar ice (2015)
  • Author(s): Onaka, T., Mori, T., Sakon, I., Shimonishi, T.
  • Organizer: Focused Meeting 12, Bridging Laboratory Astrophysics and Astronomy, IAU General Assembly
  • Place of Presentation: Honolulu, Hawaii, U.S.A.
  • Year and Date: 2015-08-03
  • Int'l Joint Research / Invited
• [Presentation] AKARI observations of dust processing in merger galaxies: NGC2782 and NGC7727 (2015)
  • Author(s): Onaka, T., Nakamura, T., Sakon, I., Ohsawa, R., Mori, T., Wu, R., Kaneda, H.
  • Organizer: IAU Symposium 315, From Interstellar Clouds to Star-forming Galaxies: Universal Processes?
  • Place of Presentation: Honolulu, Hawaii, U.S.A.
  • Year and Date: 2015-08-03
  • Int'l Joint Research
• [Presentation] Near-infrared spectroscopy of galactic PDRs with AKARI (2015)
  • Author(s): Onaka, T.
  • Organizer: 30 years of PhotoDissociation Regions, A symposium to honor David Hollenbach's lifetime in science
  • Place of Presentation: Asilomar, California, U.S.A.
  • Year and Date: 2015-06-28
  • Int'l Joint Research
• [Presentation] Dust processing in the interstellar medium (2014)
  • Author(s): T. Onaka, Y. Okada, T. I. Mori, T. Nakamura, M. Hammonds, R. Wu, I. Sakon, and D. Ishihara
  • Organizer: International Conference on Interstellar Dust, Molecules and Chemistry 2014
  • Place of Presentation: Tezpur, India
  • Year and Date: 2014-12-15 – 2014-12-18
  • Invited
• [Presentation] Lifecycle of dust grains in the interstellar medium (2014)
  • Author(s): T. Onaka
  • Organizer: The 7th meeting on Cosmic Dust
  • Place of Presentation: 大阪産業大学、大阪
  • Year and Date: 2014-08-04 – 2014-08-08
  • Invited
• [Presentation] Processing of the Interstellar Medium as Divulged by AKARI (2014)
  • Author(s): T. Onaka
  • Organizer: THE UNIVERSE IN THE LIGHT OF AKARI and Synergy with future Large Space Telescope
  • Place of Presentation: Oxford, U. K.
  • Year and Date: 2014-07-09 – 2014-07-11
  • Invited