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Circumnuclear multi-phase gas around nearby AGNs investigated by ALMA

Published online by Cambridge University Press:  29 March 2021

Takuma Izumi Open the ORCID record for Takuma Izumi [Opens in a new window]
Takuma Izumi*
Affiliation:
National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan email: [email protected]
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Abstract

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Since the advent of the Atacama Large Millimeter/submillimeter Array (ALMA), more attention has been paid on the ≲100 pc scale circumnuclear disk (CND) to reveal feeding and feedback processes of active galactic nuclei (AGNs). By using cold molecular CO and atomic C0 emission line observations, we have revealed that there are multi-component gas dynamical flows around the AGN of the Circinus galaxy, which may explain the physical origin of the AGN torus. In the luminous Seyfert galaxy NGC 7469, we found that [CI](1–0) line is extraordinary bright relative to CO lines (for example J 2−1), manifesting the physical/chemical influence of the AGN on the surrounding gas in the form of X-ray dominated region (XDR).

Keywords

galaxies: activegalaxies: Seyfertgalaxies: evolutionISM: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S359: Galaxy Evolution and Feedback across Different Environments , March 2019 , pp. 436 - 437
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

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