@inproceedings{oai:jaxa.repo.nii.ac.jp:00003004,
 author = {山田, 梨加 and 金田, 英宏 and 大薮, 進喜 and 山岸, 光義 and 石原, 大助 and Yamada, Rika and Kaneda, Hidehiro and Oyabu, Shinki and Yamagishi, Mitsuyoshi and Ishihara, Daisuke},
 book = {宇宙航空研究開発機構特別資料, JAXA Special Publication: Proceedings of the SPICA Science Conference from Exoplanets to Distant Galaxies: SPICA's New Window on the Cool Universe},
 month = {Mar},
 note = {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, A merging process in infrared (IR) galaxies plays an important role in accelerating the processing of dust grains, which may alter the properties of dust grains, e.g. the relative abundance of polycyclic aromatic hydrocarbons (PAHs) to classical grains. In fact, with AKARI, we find that the ratio of the PAH 3.3 μm to IR luminosity, L(sub PAH3.3)/L(sub IR), considerably decreases toward the luminous end of L(sub IR) greater than 10(exp11.5) solar liminosity, using the near-IR (2.5-5 μm) spectra of 100 IR galaxies without AGN signatures. We conclude that local ULIRGs intrinsically possess a smaller amount of PAHs relative to classical grains than less-luminous IR galaxies. Some fraction of PAHs may have been destroyed once by a shock during a merging process, whereas large dust grains survive, which may explain the systematically low abundance ratios of PAHs to classical grains observed for the ULIRGs. To prove this scenario, we should observe a systematic change of the ratio from an interacted region to others, or from outer to inner areas, within a galaxy. With SPICA, especially coronagraphic spectroscopy with the SCI, we can perform a spatially-resolved study of local ULIRGs in both PAH and dust emission, which will reveal the scene of the processing and destruction of dust grains with shocks during merging processes of galaxies., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1730027027, レポート番号: JAXA-SP-17-010E},
 pages = {121--123},
 publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)},
 title = {A Spatially-resolved Study on the Processing and Destruction of Dust Grains in Local ULIRGs},
 volume = {JAXA-SP-17-010E},
 year = {2018}
}