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Molecular Gas Excitation and Chemistry in VV 114 and NGC 1614 with ALMA

  • Toshiki Saito (a1) (a2), Daisuke Iono (a2) (a3), Junko Ueda (a2) (a4), Min S. Yun (a5), Kouichiro Nakanishi (a2) (a3), Hajime Sugai (a6), Masatoshi Imanishi (a2) (a3) (a7), Yoshiaki Hagiwara (a8), Hiroyuki Kaneko (a2) (a9), Kentaro Motohara (a10), Daniel Espada (a11), Takuji Yamashita (a12), Minju Lee (a1) (a2), Tomonari Michiyama (a2) (a3) and Ryohei Kawabe (a1) (a2) (a3)...

Abstract

We present high resolution molecular line observations of dusty AGN and starburst in nearby luminous infrared galaxies (LIRGs), VV 114 (band 3/4/7) and NGC 1614 (band 3/6/7/9), with ALMA. Multi-frequency imaging from 4.8 GHz to 691 GHz of NGC 1614 allows us to study spatial properties of the radio-to-FIR continuum and multiple CO transitions, and we find the CO excitation up to J upp = 6 can be explained by a single ISM model powered by nuclear starbursts. Our processing line imaging survey for VV 114 detected at least 30 molecular lines which show different chemical composition from region to region. Multi-molecule imaging helps us to diagnose the chemical differences of dusty ISM, while multi-transition imaging allows us to investigate gas physical conditions affected by nuclear activities directly.

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References

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