Seoul National University AGN Monitoring Project. V. Velocity-resolved Hβ Reverberation Mapping and Evidence of Kinematics Evolution

Shu Wang; Jong-Hak Woo; Aaron J. Barth; Vardha N. Bennert; Elena Gallo; Edmund Hodges-Kluck; Minjin Kim; Suvendu Rakshit; Tommaso Treu; Hojin Cho; Kyle M. Kabasares; Matthew A. Malkan; Amit Kumar Mandal; Donghoon Son; Vivian U; Lizvette Villafana

doi:10.3847/1538-4357/adbca5

The Astrophysical Journal (Jan 2025)

Seoul National University AGN Monitoring Project. V. Velocity-resolved Hβ Reverberation Mapping and Evidence of Kinematics Evolution

Shu Wang,
Jong-Hak Woo,
Aaron J. Barth,
Vardha N. Bennert,
Elena Gallo,
Edmund Hodges-Kluck,
Minjin Kim,
Suvendu Rakshit,
Tommaso Treu,
Hojin Cho,
Kyle M. Kabasares,
Matthew A. Malkan,
Amit Kumar Mandal,
Donghoon Son,
Vivian U,
Lizvette Villafana

Affiliations

Shu Wang: ORCiD; Astronomy Program, Department of Physics and Astronomy, Seoul National University , Seoul, 08826, Republic of Korea ; [email protected]
Jong-Hak Woo: ORCiD; Astronomy Program, Department of Physics and Astronomy, Seoul National University , Seoul, 08826, Republic of Korea ; [email protected]
Aaron J. Barth: ORCiD; Department of Physics and Astronomy, 4129 Frederick Reines Hall, University of California , Irvine, CA 92697-4575, USA
Vardha N. Bennert: ORCiD; Physics Department, California Polytechnic State University , San Luis Obispo, CA 93407, USA
Elena Gallo: ORCiD; Department of Astronomy, University of Michigan , Ann Arbor, MI 48109, USA
Edmund Hodges-Kluck: ORCiD; NASA/GSFC , Code 662, Greenbelt, MD 20771, USA
Minjin Kim: ORCiD; Major in Astronomy and Atmospheric Sciences, Kyungpook National University , Daegu 41566, Republic of Korea
Suvendu Rakshit: ORCiD; Aryabhatta Research Institute of Observational Sciences , Manora Peak, Nainital-263001, Uttarakhand, India
Tommaso Treu: ORCiD; Department of Physics and Astronomy, University of California , Los Angeles, CA 90095-1547, USA
Hojin Cho: ORCiD; Astronomy Program, Department of Physics and Astronomy, Seoul National University , Seoul, 08826, Republic of Korea ; [email protected]; Department of Physics & Astronomy, Texas Tech University , Lubbock TX, 79409-1051, USA
Kyle M. Kabasares: ORCiD; Department of Physics and Astronomy, 4129 Frederick Reines Hall, University of California , Irvine, CA 92697-4575, USA; Bay Area Environmental Research Institute, Ames Research Center , Moffett Field, CA 94035, USA; Ames Research Center , National Aeronautics and Space Administration, Moffett Field, CA 94035, USA
Matthew A. Malkan: ORCiD; Department of Physics and Astronomy, University of California , Los Angeles, CA 90095-1547, USA
Amit Kumar Mandal: ORCiD; Astronomy Program, Department of Physics and Astronomy, Seoul National University , Seoul, 08826, Republic of Korea ; [email protected]; Center for Theoretical Physics, Polish Academy of Sciences , Al. Lotników 32/46, 02-668 Warsaw, Poland
Donghoon Son: ORCiD; Astronomy Program, Department of Physics and Astronomy, Seoul National University , Seoul, 08826, Republic of Korea ; [email protected]
Vivian U: ORCiD; Department of Physics and Astronomy, 4129 Frederick Reines Hall, University of California , Irvine, CA 92697-4575, USA
Lizvette Villafana: ORCiD; Physics Department, California Polytechnic State University , San Luis Obispo, CA 93407, USA; Department of Physics and Astronomy, University of California , Los Angeles, CA 90095-1547, USA

DOI: https://doi.org/10.3847/1538-4357/adbca5
Journal volume & issue: Vol. 983, no. 1
p. 45

Abstract

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We present velocity-resolved reverberation lags of H β for 20 active galactic nuclei (AGNs) from the Seoul National University AGN Monitoring Project. We detect unambiguous velocity-resolved structures in 12 AGNs, among which eight objects exhibit symmetric structures, two objects show inflow-like characteristics, and two objects display outflow-like signatures. For two AGNs, we successfully measure the velocity-resolved lags in different years, revealing evidence of evolving broad-line region (BLR) kinematics. By combining our sample with the literature velocity-resolved lags, we find that the symmetric velocity-resolved lags are the most common (40%) type among this sample. The frequency of inflow kinematics is also notable (20%), while outflow kinematics are less common (11%). Our sample significantly expands the previous velocity-resolved reverberation mapping sample in the high-luminosity regime, enabling us to constrain BLR kinematics across a large dynamic range of luminosity.

Published in The Astrophysical Journal

ISSN: 1538-4357 (Online)
Publisher: IOP Publishing
Country of publisher: United Kingdom
LCC subjects: Science: Astronomy: Astrophysics
Website: https://iopscience.iop.org/journal/0004-637X

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