Browse > Article
http://dx.doi.org/10.5303/PKAS.2012.27.4.297

miniTAO/ANIR Paα SURVEY OF LOCAL LIRGs  

Tateuchi, Ken (Institute of Astronomy, the University of Tokyo)
Motohara, Kentaro (Institute of Astronomy, the University of Tokyo)
Konishi, Masahiro (Institute of Astronomy, the University of Tokyo)
Takahashi, Hidenori (Institute of Astronomy, the University of Tokyo)
Kato, Natsuko (Institute of Astronomy, the University of Tokyo)
Uchimoto, Yuka K. (Astronomical Institute, Tohoku University)
Toshikawa, Koji (Institute of Astronomy, the University of Tokyo)
Ohsawa, Ryou (Department of Astronomy, the University of Tokyo)
Kitagawa, Yutaro (Institute of Astronomy, the University of Tokyo)
Yoshii, Yuzuru (Institute of Astronomy, the University of Tokyo)
Doi, Mamoru (Institute of Astronomy, the University of Tokyo)
Kohno, Kotaro (Institute of Astronomy, the University of Tokyo)
Kawara, Kimiaki (Institute of Astronomy, the University of Tokyo)
Tanaka, Masuo (Institute of Astronomy, the University of Tokyo)
Miyata, Takashi (Institute of Astronomy, the University of Tokyo)
Tanabe, Toshihiko (Institute of Astronomy, the University of Tokyo)
Minezaki, Takeo (Institute of Astronomy, the University of Tokyo)
Sako, Shigeyuki (Institute of Astronomy, the University of Tokyo)
Morokuma, Tomoki (Institute of Astronomy, the University of Tokyo)
Tamura, Yoichi (Institute of Astronomy, the University of Tokyo)
Aoki, Tsutomu (Kiso Observatory, Institute of Astronomy, the University of Tokyo)
Soyano, Takeo (Kiso Observatory, Institute of Astronomy, the University of Tokyo)
Tarusawa, Kenfichi (Kiso Observatory, Institute of Astronomy, the University of Tokyo)
Koshida, Shintaro (Institute of Astronomy, the University of Tokyo)
Kamizuka, Takafumi (Institute of Astronomy, the University of Tokyo)
Nakamura, Tomohiko (Institute of Astronomy, the University of Tokyo)
Asano, Kentaro (Institute of Astronomy, the University of Tokyo)
Uchiyama, Mizuho (Institute of Astronomy, the University of Tokyo)
Okada, Kazushi (Institute of Astronomy, the University of Tokyo)
Ita, Yoshifusa (Astronomical Institute, Tohoku University)
Publication Information
Publications of The Korean Astronomical Society / v.27, no.4, 2012 , pp. 297-298 More about this Journal
Abstract
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 $Pa{\alpha}$ emission line at $1.8751{\mu}m$. Since its first light observation in June 2009, we have been carrying out a $Pa{\alpha}$ narrow-band imaging survey of nearby luminous infrared galaxies (LIRGs), and have obtained $Pa{\alpha}$ 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 ($A_V$~ 3 mag), produced by their active star formation activities. Because $Pa{\alpha}$ 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.
Keywords
infrared: $Pa{\alpha}$; galaxies: LIRGs; conferences: proceedings;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Goto, et al., 2010, Evolution of Infrared Luminosity Functions of Galaxies in the AKARI NEP-Deep Field. Revealing the Cosmic Star Formation History Hidden by Dust, A&A, 514, A6   DOI
2 Alonso-Herrero, et al., 2006, Near-Infrared and Starforming Properties of Local Luminous Infrared Galaxies, ApJ, 650, 835   DOI
3 Conselice, et al., 2003, The Relationship between Stellar Light Distributions of Galaxies and Their Formation Histories, ApJS, 147, 1   DOI   ScienceOn
4 Yoshii, et al., 2010, The University of Tokyo Atacama Observatory 6.5 m telescope project, Proc. SPIE, 7733