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Large-Scale Molecular Gas Survey in 12CO, 13CO and C18O (J = 2–1) with the Osaka 1.85m mm-submm Telescope

Part of: IAU Issue 315 - From Interstellar Clouds...

Published online by Cambridge University Press:  12 September 2016

Toshikazu Onishi ,
Atsushi Nishimura ,
Kazuki Tokuda ,
Ryohei Harada ,
Kazuhito Dobashi ,
Tomomi Shimoikura ,
Kimihiro Kimura  and
Hideo Ogawa
Toshikazu Onishi
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: ohnishi@p.s.osakafu-u.ac.jp
Atsushi Nishimura
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: ohnishi@p.s.osakafu-u.ac.jp Nobeyama Radio Observatory, National Astronomical Observatory of Japan, 462-2 Nobeyama Minamimaki-mura, Minamisaku-gun, Nagano 384-1305, Japan
Kazuki Tokuda
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: ohnishi@p.s.osakafu-u.ac.jp
Ryohei Harada
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: ohnishi@p.s.osakafu-u.ac.jp
Kazuhito Dobashi
Affiliation:
Department of Astronomy and Earth Sciences, Tokyo Gakugei University, 4-1-1 Nukuikita-machi, Koganei, Tokyo 184-8501, Japan
Tomomi Shimoikura
Affiliation:
Department of Astronomy and Earth Sciences, Tokyo Gakugei University, 4-1-1 Nukuikita-machi, Koganei, Tokyo 184-8501, Japan
Kimihiro Kimura
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: ohnishi@p.s.osakafu-u.ac.jp
Hideo Ogawa
Affiliation:
Department of Physical Science, Graduate School of Science, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka 599-8531, Japan email: ohnishi@p.s.osakafu-u.ac.jp
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Abstract

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We have developed a new mm-submm telescope with a diameter of 1.85 m (hereafter, Osaka 1.85-m telescope) installed at the Nobeyama Radio Observatory. The scientific goal is to precisely reveal physical properties of molecular clouds in the Galaxy by obtaining a large-scale distribution of molecular gas, which also can be compared with large-scale observations in various wavelengths. The target frequency is ~230 GHz; simultaneous observations in J = 2–1 lines of 12CO, 13CO and C18O are achieved with a beam size (HPBW) of 2.7 arcmin. Here we present the progress of observations and the scientific results obtained by Osaka 1.85-m telescope. We note that these J = 2–1 data of the Galactic molecular clouds will be precious for the comparison with those of extra-galactic ones that will be obtained with the ALMA with the comparable spatial resolutions.

Keywords

ISM: cloudsstars: formationradio lines: ISM
Type
Poster Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S315: From Interstellar Clouds to Star-Forming Galaxies: Universal Processes? , August 2015 , E62
Copyright
Copyright © International Astronomical Union 2016 

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