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Paper: Spectroscopic Imaging Study of Nearby Spiral Galaxies: Introduction of Observations with AKARI, NRO and ASTE
Volume: 418, AKARI, a Light to Illuminate the Misty Universe
Page: 491
Authors: Takahashi, H.; Matsuo, H.; Nakanishi, K.
Abstract: The aim of this research is to reveal the spatial distribution of the star formation activity toward nearby galaxies by comparing CO molecular emission lines with the large area observation in FIR lines. We report the imaging observations of far-Infrared (FIR) forbidden lines via FIS-FTS and CO molecular lines from low to high excitation levels with ASTE, which are good tracer of star forming regions or photo-dissociation regions, especially spiral galaxies, in order to derive the information of the physical conditions of the ambient interstellar radiation fields. The information tells us not only the difference of current star forming activity between the arm and the interarm of these galaxies but also star forming history and evolution of spiral galaxies with systematic and statistical study. Furthermore the dust properties can be referred by combining far-infrared photometric data and submillimeter observation. This observation program is a proposal which presents a tool for investigation of physical properties of nearby galaxies.
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