논문 상세보기

천문학논총 (Publications of the Korean Astronomical Society)
한국천문학회 (Korean Astronomical Society)
초록

ANIR (Atacama Near InfraRed camera) is a near infrared camera for the University of Tokyo Atacama 1m telescope, installed at the summit of Co. Chajnantor (5,640 m altitude) in northern Chile. The high altitude and extremely low water vapor (PWV = 0.5 mm) of the site enable us to perform observation of hydrogen Paα emission line at 1.8751 μm . Since its first light observation in June 2009, we have been carrying out a Paα narrow-band imaging survey of nearby luminous infrared galaxies (LIRGs), and have obtained Paα for 38 nearby LIRGs listed in AKARI/FIS-PSC at the velocity of recession between 2,800 km/s and 8,100 km/s. LIRGs are affected by a large amount of dust extinction ( AV~ 3 mag), produced by their active star formation activities. Because Paα is the strongest hydrogen recombination line in the infrared wavelength ranges, it is a good and direct tracer of dust-enshrouded star forming regions, and enables us to probe the star formation activities in LIRGs. We find that LIRGs have two star-forming modes. The origin of the two modes probably come from differences between merging stage and/or star-forming process.

목차
ABSTRACT
1. INTRODUCTION
2. OBSERVATION
    2.1. miniTAO/ANIR
    2.2. Sample Data
3. Paα DISTRIBUTIONS OF LOCAL LIRGs
4. SUMMARY
REFERENCES
저자
  • KEN TATEUCHI(Institute of Astronomy, the University of Tokyo)
  • KENTARO MOTOHARA(Institute of Astronomy, the University of Tokyo)
  • MASAHIRO KONISHI(Institute of Astronomy, the University of Tokyo)
  • HIDENORI TAKAHASHI(Institute of Astronomy, the University of Tokyo)
  • NATSUKO KATO(Institute of Astronomy, the University of Tokyo)
  • YUKA K. UCHIMOTO(Astronomical Institute, Tohoku University)
  • KOJI TOSHIKAWA(Institute of Astronomy, the University of Tokyo)
  • RYOU OHSAWA(Department of Astronomy, the University of Tokyo)
  • YUTARO KITAGAWA(Institute of Astronomy, the University of Tokyo)
  • YUZURU YOSHII(Institute of Astronomy, the University of Tokyo)
  • MAMORU DOI(Institute of Astronomy, the University of Tokyo)
  • KOTARO KOHNO(Institute of Astronomy, the University of Tokyo)
  • KIMIAKI KAWARA(Institute of Astronomy, the University of Tokyo)
  • MASUO TANAKA(Institute of Astronomy, the University of Tokyo)
  • TAKASHI MIYATA(Institute of Astronomy, the University of Tokyo)
  • TOSHIHIKO TANABE(Institute of Astronomy, the University of Tokyo)
  • TAKEO MINEZAKI(Institute of Astronomy, the University of Tokyo)
  • SHIGEYUKI SAKO(Institute of Astronomy, the University of Tokyo)
  • TOMOKI MOROKUMA(Institute of Astronomy, the University of Tokyo)
  • YOICHI TAMURA(Institute of Astronomy, the University of Tokyo)
  • TSUTOMU AOKI(Kiso Observatory, Institute of Astronomy, the University of Tokyo)
  • TAKEO SOYANO(Kiso Observatory, Institute of Astronomy, the University of Tokyo)
  • KENFICHI TARUSAWA(Kiso Observatory, Institute of Astronomy, the University of Tokyo)
  • SHINTARO KOSHIDA(Institute of Astronomy, the University of Tokyo)
  • TAKAFUMI KAMIZUKA(Institute of Astronomy, the University of Tokyo)
  • TOMOHIKO NAKAMURA(Institute of Astronomy, the University of Tokyo)
  • KENTARO ASANO(Institute of Astronomy, the University of Tokyo)
  • MIZUHO UCHIYAMA(Institute of Astronomy, the University of Tokyo)
  • KAZUSHI OKADA(Institute of Astronomy, the University of Tokyo)
  • YOSHIFUSA ITA(Astronomical Institute, Tohoku University)