@inproceedings{oai:jaxa.repo.nii.ac.jp:00003146, author = {大山, 陽一 and 和田, 武彦 and 松原, 英雄 and 高木, 俊暢 and Malkan, M. and 後藤, 友嗣 and 江上, 英一 and Lee, Hyung Mok and Im, Myung and Kim, J. -H. and Pearson, Chris and 稲見, 華恵 and 大薮, 進喜 and 臼井, 文彦 and Burgarella, Denis and Mazyed, F. and 今西, 昌俊 and Jeong, Woong-Seob and 宮地, 崇光 and DiazTello, J. and 中川, 貴雄 and Oyama, Yoichi and Wada, Takehiko and Matsuhara, Hideo and Takagi, Toshinobu and Malkan, M. and Goto, Tomotsugu and Egami, Eiichi and Lee, Hyung Mok and Im, Myung and Kim, J. -H. and Pearson, Chris and Inami, Hanae and Oyabu, Shinki and Usui, Fumihiko and Burgarella, Denis and Mazyed, F. and Imanishi, Masatoshi and Jeong, Woong-Seob and Miyaji, Takamitsu and DiazTello, J. and Nakagawa, Takao}, book = {宇宙航空研究開発機構特別資料, JAXA Special Publication: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life}, month = {Mar}, note = {第4回「あかり」国際会議 (2017年10月17-20日. 東京大学), 文京区, 東京, The 4th AKARI International Conference: The Cosmic Wheel and the Legacy of the AKARI archive: from galaxies and stars to planets and life (October 17-20, 2017. The University of Tokyo), Bunkyo-ku, Tokyo, Japan, We aim to study star-forming galaxies by using a blind spectroscopic survey at mid-infrared (MIR) wavelengths to understand evolution of their star formation rate (SFR) and specific SFR (SFR per stellar mass) up to z in the order of 0.5, by paying particular attention to their Polycyclic Aromatic Hydrocarbon (PAH) properties. We conducted a low-resolution (R approximately equal to 50) slitless spectroscopic survey at 5-13 micrometers of 9 micrometers flux-selected sources (approximately greater than 0.3 mJy) around the North Ecliptic Pole with the Infrared Camera (IRC) onboard AKARI. We identified 48 PAH galaxies with PAH 6.2, 7.7, and 8.6 micrometers features at z approximately less than 0.5. The rest-frame optical-MIR spectral energy distributions (SEDs) based on CFHT and AKARI/IRC imaging are produced and analyzed in conjunction with the PAH spectroscopy. The rest-frame SEDs of all PAH galaxies have a universal shape with stellar and 7.7 micrometers (PAH) bumps, except that the PAH enhancement (luminosity ratio of the 7.7 micrometers PAH feature over the 3.5 micrometers stellar bump) significantly varies as a function of the PAH luminosities. We identified a PAH-enhanced population at z approximately less than 0.35, whose SEDs and luminosities are typical of luminous infrared galaxies. They show particularly larger PAH enhancement at high luminosity, implying that they are vigorous star-forming galaxies with elevated specific SFR. Our composite starburst model that combines a young and dusty starburst with a very old population can successfully reproduce most SED characteristics., 著者人数: 27名, 形態: カラー図版あり, Number of authors: 27, Physical characteristics: Original contains color illustrations, 資料番号: AA1730026072, レポート番号: JAXA-SP-17-009E}, pages = {359--362}, publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)}, title = {AKARI MIR slitless spectroscopic survey of galaxies at z less than 0.5}, volume = {JAXA-SP-17-009E}, year = {2018} }