@inproceedings{oai:jaxa.repo.nii.ac.jp:00003003,
 author = {矢野, 健一 and 中川, 貴雄 and 磯部, 直樹 and 白旗, 麻衣 and Yano, Kenichi and Nakagawa, Takao and Isobe, Naoki and Shirahata, Mai},
 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, We carried out systematic observations of the HI recombination line Bra (4.05 μm) in nearby (z less than 0.3) ultraluminous infrared galaxies (ULIRGs), using AKARI near-infrared 2.5-5.0 μm spectroscopy. We derived star formation rates (SFRs) from the Bra line, whose observed flux is predicted to be the highest among HI recombination lines in conditions with large dust extinction (visual extinction Av greater than 15 mag) expected in ULIRGs. Using the 3.3 μm polycyclic aromatic hydrocarbon emission in addition to the Bra line as an indicator of the SFR, we estimated the contribution of the star formation to the total infrared luminosity in 51 ULIRGs. The contribution was on average 28 plus or minus4 0/o in ULIRGs optically classified as H II, while 14 plus or minus2 0/o in ULIRGs optically classified as LINER or Seyfert. This result indicates that the star formation is significantly active in H II ULIRGs and other energy source, i.e. active galactic nuclei, is needed in LINER ULIRGs., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA1730027026, レポート番号: JAXA-SP-17-010E},
 pages = {117--119},
 publisher = {宇宙航空研究開発機構(JAXA), Japan Aerospace Exploration Agency (JAXA)},
 title = {Probing Star Formation in Ultraluminous Infrared Galaxies Using AKARI Near-Infrared Spectroscopy},
 volume = {JAXA-SP-17-010E},
 year = {2018}
}