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Processing of Interstellar Dust Grains in Galaxies Revealed by AKARI

Published online by Cambridge University Press:  21 March 2013

Hidehiro Kaneda ,
Daisuke Ishihara ,
Koudai Kobata ,
Toru Kondo ,
Mitsuyoshi Yamagishi ,
Akiko Yasuda ,
Takashi Onaka ,
Itsuki Sakon  and
Toyoaki Suzuki
Hidehiro Kaneda
Affiliation:
Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, 464-8602, Japan email: kaneda@u.phys.nagoya-u.ac.jp
Daisuke Ishihara
Affiliation:
Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, 464-8602, Japan email: kaneda@u.phys.nagoya-u.ac.jp
Koudai Kobata
Affiliation:
Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, 464-8602, Japan email: kaneda@u.phys.nagoya-u.ac.jp
Toru Kondo
Affiliation:
Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, 464-8602, Japan email: kaneda@u.phys.nagoya-u.ac.jp
Mitsuyoshi Yamagishi
Affiliation:
Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, 464-8602, Japan email: kaneda@u.phys.nagoya-u.ac.jp
Akiko Yasuda
Affiliation:
Graduate School of Science, Nagoya University, Chikusa-ku, Nagoya, 464-8602, Japan email: kaneda@u.phys.nagoya-u.ac.jp
Takashi Onaka
Affiliation:
Department of Astronomy, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
Itsuki Sakon
Affiliation:
Department of Astronomy, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan
Toyoaki Suzuki
Affiliation:
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan
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Abstract

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With AKARI, we have performed a systematic study of interstellar dust grains in various environments of galaxies. In many cases, the IR emission of dust is an important tool to trace star-forming activities in galaxies. However it is much more than just star-formation tracers. AKARI has revealed the detailed properties of dust grains in regions not relevant to star formation as well, some of which are found not to follow our old empirical knowledge. Because of its unique capabilities, such as near- and far-IR spectroscopy, and all-sky coverage, AKARI has provided new knowledge on the processing of carbonaceous grains including polycyclic aromatic hydrocarbons. We present the latest results obtained from our AKARI observations of the ISM in our Galaxy and nearby galaxies.

Keywords

dustextinction — galaxies: ISM — Galaxy: center
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S292: Molecular Gas, Dust, and Star Formation in Galaxies , August 2012 , pp. 271 - 274
Copyright
Copyright © International Astronomical Union 2013

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