Seoul National University AGN Monitoring Project. V. Velocity-resolved H<i>β</i> Reverberation Mapping and Evidence of Kinematics Evolution
Abstract 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.
Authors
- Jong-Hak Woo (ORCID: https://orcid.org/0000-0002-8055-5465)
- U Vivian (ORCID: https://orcid.org/0000-0002-1912-0024)
- Aaron J. Barth (ORCID: https://orcid.org/0000-0002-3026-0562)
- Edmund Hodges‐Kluck (ORCID: https://orcid.org/0000-0002-2397-206X)
- Tommaso Treu (ORCID: https://orcid.org/0000-0002-8460-0390)
- Minjin Kim (ORCID: https://orcid.org/0000-0002-3560-0781)
- Matthew A. Malkan (ORCID: https://orcid.org/0000-0001-6919-1237)
- Vardha N. Bennert (ORCID: https://orcid.org/0000-0003-2064-0518)
- Lizvette Villafaña (ORCID: https://orcid.org/0000-0002-1961-6361)
- Kyle M. Kabasares (ORCID: https://orcid.org/0000-0003-2632-8875)
- Donghoon Son (ORCID: https://orcid.org/0000-0002-4704-3230)
- Suvendu Rakshit (ORCID: https://orcid.org/0000-0002-8377-9667)
- Elena Gallo (ORCID: https://orcid.org/0000-0001-5802-6041)
- Shu Wang (ORCID: https://orcid.org/0000-0002-2052-6400)
- Amit Kumar Mandal (ORCID: https://orcid.org/0000-0001-9957-6349)
- Hojin Cho (ORCID: https://orcid.org/0000-0003-2010-8521)
Publication Details
- Journal
- The Astrophysical Journal
- Published
- 2025-04-03
- DOI
- https://doi.org/10.3847/1538-4357/adbca5
- Citations
- 5
- Primary Topic
- Galaxies: Formation, Evolution, Phenomena
- Type
- article
- Field-Weighted Citation Impact
- 5.77
Funders
- National Research Foundation of Korea