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Systematic Study of the Inner Structure of Molecular Tori in Nearby U/LIRGs using Velocity Decomposition of CO Rovibrational Absorption Lines
Shusuke Onishi, Takao Nakagawa, Shunsuke Baba +6
Determining the inner structure of the molecular torus around an active galactic nucleus is essential for understanding its formation mechanism. However, spatially resolving the to…
Warm Molecular Gas in the Central Parsecs of the Buried Nucleus of NGC 4418 Traced with the Fundamental CO Ro-vibrational Absorptions
Youichi Ohyama, Shusuke Onishi, Takao Nakagawa +5
We investigated the inner buried nucleus of a nearby luminous infrared galaxy NGC 4418 using high-resolution spectroscopy of fundamental carbon monoxide (CO) ro-vibrational absorpt…
Anomalous Hydrogen Recombination-Line Ratios in Ultraluminous Infrared Galaxies
Kenichi Yano, Shunsuke Baba, Takao Nakagawa +5
We conducted systematic observations of the H I Br (4.05 m) and Br (2.63 m) lines in 52 nearby () ultraluminous infrared galaxies (ULIRGs) with AKARI. Among 33 U…
Study of the Inner Structure of the Molecular Torus in IRAS 08572+3915 NW with Velocity Decomposition of CO Rovibrational Absorption Lines
Shusuke Onishi, Takao Nakagawa, Shunsuke Baba +6
Understanding the inner structure of the clumpy molecular torus surrounding the active galactic nucleus is essential in revealing the forming mechanism. However, spatially resolvin…
MIRIS observation of near-infrared diffuse Galactic light
Y. Onishi, K. Sano, S. Matsuura +17
We report near-infrared (IR) observations of high Galactic latitude clouds to investigate diffuse Galactic light (DGL), which is starlight scattered by interstellar dust grains. Th…
The Near-Infrared CO Absorption Band as a Probe to the Innermost Part of an AGN Obscuring Material
S. Baba, T. Nakagawa, N. Isobe +1
We performed a systematic analysis of the 4.67 m CO ro-vibrational absorption band toward nearby active galactic nuclei (AGNs) and analyzed the absorption profiles of ten nearby…