Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. XIV. Long-duration High-cadence Reverberation Mapping Results for 11 PG Quasars

Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. XIV. Long-duration High-cadence Reverberation Mapping Results for 11 PG Quasars

We report the results of a long-duration high-cadence reverberation mapping campaign of a second batch of 11 PG quasars using the 2.2 m telescope at the Calar Alto Observatory. This follows a similar earlier study of another sample of 15 objects reported by C. Hu et al. (2021). Among the 11 PG quasa...

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Main Authors: Chen Hu, Zhu-Heng Yao, Yong-Jie Chen, Yu-Yang Songsheng, Yi-Lin Wang, Sen Yang, Hao Zhang, Wei-Jian Guo, Pu Du, Yan-Rong Li, Ming Xiao, Jun-Rong Liu, Hua-Rui Bai, Feng-Na Fang, Yi-Xin Fu, Yue-Chang Peng, Shuo Zhai, Jin-Ming Bai, Luis C. Ho, Michael S. Brotherton, Jesús Aceituno, Hartmut Winkler, Jian-Min Wang, (SEAMBH collaboration)
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astrophysical Journal Supplement Series
Subjects:
Supermassive black holes
Seyfert galaxies
Active galactic nuclei
Quasars
Reverberation mapping
Time domain astronomy
Online Access:https://doi.org/10.3847/1538-4365/add40b
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Summary:We report the results of a long-duration high-cadence reverberation mapping campaign of a second batch of 11 PG quasars using the 2.2 m telescope at the Calar Alto Observatory. This follows a similar earlier study of another sample of 15 objects reported by C. Hu et al. (2021). Among the 11 PG quasars, eight objects have the H β time lags measured for the first time, while the other three objects were observed in previous campaigns but only had highly uncertain H β -lag measurements. Long-term light curves are presented of photometric V -band, spectroscopic 5100 Å continuum, and the H β emission line, lasting for ∼3–6 yr with a cadence of ∼6–14 days. Accurate H β time lags ranging from ∼20 to 150 days in the rest frame are obtained. The estimated virial masses of the central supermassive black holes range from ∼(3–300) × 10 ^7 M _⊙ . Combining these results with those reported in C. Hu et al. (2021), we now have 26 PG quasars, with representative properties, having reliable H β time-lag measurements from our long-duration high-cadence campaign. A tentative fit to the relation between the H β time lag and the continuum luminosity for these 26 objects gives a slope of 0.53.
ISSN:0067-0049

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