AGN outflows and their properties in Mrk 766 as revealed by KOOLS-IFU on the Seimei Telescope

Abstract We present the emission-line flux distributions and their ratios, as well as the gas outflow features, of the innermost 2 kpc region of the type 1 Seyfert galaxy Mrk 766, using the Kyoto Okayama Optical Low-dispersion Spectrograph with an optical-fiber integral field unit on the Seimei Telescope. We find that the central region of Mrk 766 is kinematically disturbed, exhibiting asymmetric and radially distributed active galactic nucleus (AGN)-driven ionized gas outflows traced by [O iii]$\lambda 5007$ with velocities exceeding 500 ${\rm km}~{\rm s}^{-1}$. The mass of the ionized gas outflow is estimated to be $10^{4.65-5.95}\, M_{\odot }$, and the mass outflow rate is 0.14–2.73 $M_{\odot }$ yr$^{-1}$. This corresponds to a kinetic power, $\dot{E}_{\rm K}$, of $4.31 \times 10^{40} \ {\rm erg} \ {\rm s^{-1}}< \dot{E}_{\rm K} < 8.62 \times 10^{41} \ {\rm erg} \ {\rm s^{-1}}$, which is equivalent to 0.08%–1.53% of the bolometric luminosity, $L_{\rm bol}$. This result is consistent with other observed properties of ionized gas outflows, although it is lower than the theoretical predictions in AGN feedback models ($\sim$5%), implying that ionized gas outflows traced by [O iii]$\lambda 5007$ represent only a minor fraction of the total outflows ejected from the host galaxy. Given the asymmetric and radially distributed outflow signatures observed across the host galaxy within the limited field of view, the maximum distance that the outflowing gas has traveled remains an open question.

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Journal
Publications of the Astronomical Society of Japan
Published
2025-04-09
DOI
https://doi.org/10.1093/pasj/psaf025
Citations
1
Primary Topic
Galaxies: Formation, Evolution, Phenomena
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article
Field-Weighted Citation Impact
1.15

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article

AGN outflows and their properties in Mrk 766 as revealed by KOOLS-IFU on the Seimei Telescope

Kyuseok Oh, Yuta Okada, K. Setoguchi, Satoshi Yamada et al.
1 citations
Publications of the Astronomical Society of Japan
Galaxies: Formation, Evolution, Phenomena
1.15
article

AGN outflows and their properties in Mrk 766 as revealed by KOOLS-IFU on the Seimei Telescope

Kyuseok Oh, Yuta Okada, K. Setoguchi, Satoshi Yamada, Kei Fujiwara, Yoshiki Toba, Keisuke Isogai, Yuya Nakatani, Kazuya Matsubayashi, R. Uematsu, A. Tanimoto, Shoji Ogawa, Yoshihiro Ueda
article en
1 citations

Abstract

Abstract We present the emission-line flux distributions and their ratios, as well as the gas outflow features, of the innermost 2 kpc region of the type 1 Seyfert galaxy Mrk 766, using the Kyoto Okayama Optical Low-dispersion Spectrograph with an optical-fiber integral field unit on the Seimei Telescope. We find that the central region of Mrk 766 is kinematically disturbed, exhibiting asymmetric and radially distributed active galactic nucleus (AGN)-driven ionized gas outflows traced by [O iii]$\lambda 5007$ with velocities exceeding 500 ${\rm km}~{\rm s}^{-1}$. The mass of the ionized gas outflow is estimated to be $10^{4.65-5.95}\, M_{\odot }$, and the mass outflow rate is 0.14–2.73 $M_{\odot }$ yr$^{-1}$. This corresponds to a kinetic power, $\dot{E}_{\rm K}$, of $4.31 \times 10^{40} \ {\rm erg} \ {\rm s^{-1}}< \dot{E}_{\rm K} < 8.62 \times 10^{41} \ {\rm erg} \ {\rm s^{-1}}$, which is equivalent to 0.08%–1.53% of the bolometric luminosity, $L_{\rm bol}$. This result is consistent with other observed properties of ionized gas outflows, although it is lower than the theoretical predictions in AGN feedback models ($\sim$5%), implying that ionized gas outflows traced by [O iii]$\lambda 5007$ represent only a minor fraction of the total outflows ejected from the host galaxy. Given the asymmetric and radially distributed outflow signatures observed across the host galaxy within the limited field of view, the maximum distance that the outflowing gas has traveled remains an open question.

Publications of the Astronomical Society of JapanVol. 77(3)
Kagoshima University (JP), Institute of Astronomy and Astrophysics, Academia Sinica (TW), Pioneer (United States) (US), Kyoto University (JP), Korea Astronomy and Space Science Institute (KR), Japan Aerospace Exploration Agency (JP), RIKEN (JP), Institute of Astronomy (RU), Institute of Space and Astronautical Science (JP), National Astronomical Observatory of Japan (JP), Ehime University (JP), The University of Tokyo (JP)
Kagoshima University, National Research Foundation, Ministry of Education, Culture, Sports, Science and Technology, Korea Astronomy and Space Science Institute, National Research Foundation of Korea, Kyoto University, National Astronomical Observatory of Japan, Ministry of Science and ICT, South Korea, Japan Society for the Promotion of Science, RIKEN, National Institutes of Natural Sciences
Openalex Percentile: Top 20%
Galaxies: Formation, Evolution, Phenomena
1.15
DOIOpen Access PDFOpenAlex
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