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Monitoring AGNs with Hβ Asymmetry. III. Long-term Reverberation Mapping Results of 15 Palomar–Green Quasars

2022; Institute of Physics; Volume: 262; Issue: 1 Linguagem: Inglês

10.3847/1538-4365/ac7beb

1538-4365

Dong-Wei Bao, M. S. Brotherton, Pu Du, Jacob N. McLane, T. E. Zastrocky, Kianna A. Olson, Feng-Na Fang, Shuo Zhai, Zheng-Peng Huang, Kai Wang, Bi-Xuan Zhao, Shasha Li, Sen Yang, Yongjie Chen, Junrong Liu, Zhu-Heng Yao, Yue-Chang Peng, Wei-Jian Guo, Yu-Yang Songsheng, Yan-Rong Li, Bo-Wei Jiang, David C. Kasper, William T. Chick, My L. Nguyen, Jaya Maithil, Henry A. Kobulnicky, Daniel A. Dale, Derek Hand, C. Adelman, Z. Carter, Grey Murphree, M. Oeur, S. Schonsberg, T. Roth, Hartmut Winkler, P. Marziani, M. D’Onofrio, Chen Hu, Ming Xiao, Suijian Xue, B. Czerny, J. Aceituno, Luis C. Ho, Jin‐Ming Bai, Jian‐Min Wang,

Gamma-ray bursts and supernovae

In this third paper of the series reporting on the reverberation mapping (RM) campaign of active galactic nuclei with asymmetric H$\beta$ emission-line profiles, we present results for 15 Palomar-Green (PG) quasars using spectra obtained between the end of 2016 to May 2021. This campaign combines long time spans with relatively high cadence. For 8 objects, both the time lags obtained from the entire light curves and the measurements from individual observing seasons are provided. Reverberation mapping of 9 of our targets has been attempted for the first time, while the results for 6 others can be compared with previous campaigns. We measure the H$\beta$ time lags over periods of years and estimate their black hole masses. The long duration of the campaign enables us to investigate their broad line region (BLR) geometry and kinematics for different years by using velocity-resolved lags, which demonstrate signatures of diverse BLR geometry and kinematics. The BLR geometry and kinematics of individual objects are discussed. In this sample, the BLR kinematics of Keplerian/virialized motion and inflow is more common than outflow.