Publ. Astron. Soc. Japan (2014) 00(0), 1–16 1 doi: 10.1093/pasj/xxx000 Investigating the Relation between CO (3–2) and Far Infrared Luminosities for Nearby Merging Galaxies Using ASTE Tomonari MICHIYAMA,1,2 Daisuke IONO,1,2 Kouichiro NAKANISHI1,2 Junko UEDA,3 Toshiki SAITO,4,2 Misaki ANDO,1,2 Hiroyuki KANEKO,5,2 Takuji YAMASHITA,6 Yuichi MATSUDA,1,2 Bunyo HATSUKADE,2 Kenichi KIKUCHI,2 Shinya KOMUGI,7 and Takayuki MUTO7 1Department of Astronomical Science, SOKENDAI (The Graduate University of Advanced Studies), Mitaka, Tokyo 181-8588 2National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo, 181-8588 3Harvard-Smithsonian Center for Astrophysics, 60 Garden Street,Cambridge, MA 02138, USA 4Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 133-0033 5Nobeyama Radio Observatory, 462-2, Minamimaki, Minamisaku, Nagano, 384-1305 6Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 3-1-1 Yoshinodai, Chuo-ku, Sagamihara, Kanagawa 252-5210 7Division of Liberal Arts, Kogakuin University, 1-24-2, Nishi-Shinjuku, Shinjuku-ku, Tokyo 163-8677 ∗E-mail:
[email protected] Received ; Accepted Abstract We present the new single dish CO (3–2) emission data obtained toward 19 early stage and 7 late stage nearby merging galaxies using the Atacama Submillimeter Telescope Experiment (ASTE). Combining with the single dish and interferometric data of galaxies observed in pre- ′ vious studies, we investigate the relation between the CO (3–2) luminosity (LCO(3−2)) and the far Infrared luminosity (LFIR) in a sample of 29 early stage and 31 late stage merging galaxies, and 28 nearby isolated spiral galaxies.