Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. XII. Reverberation Mapping Results for 15 PG Quasars from a Long-duration High-cadence Campaign

Autor: Hu, Chen, Li, Sha-Sha, Yang, Sen, Yang, Zi-Xu, Guo, Wei-Jian, Bao, Dong-Wei, Jiang, Bo-Wei, Du, Pu, Li, Yan-Rong, Xiao, Ming, Songsheng, Yu-Yang, Yu, Zhe, Bai, Jin-Ming, Ho, Luis C., Brotherton, Michael S., Aceituno, Jesús, Winkler, Hartmut, Wang, Jian-Min, SEAMBH collaboration
Přispěvatelé: National Key Research and Development Program (China), National Natural Science Foundation of China, Chinese Academy of Sciences, Ministerio de Ciencia, Innovación y Universidades (España), European Commission
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Digital.CSIC: Repositorio Institucional del CSIC
Consejo Superior de Investigaciones Científicas (CSIC)
Digital.CSIC. Repositorio Institucional del CSIC
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Popis: In this work, we present the first results of the long-term high-cadence spectroscopic monitoring of 15 PG quasars with relatively strong Fe ii emission, as a part of a broader reverberation mapping campaign performed using the Calar Alto Observatory's 2.2 m telescope. The V-band, 5100 Å continuum, and Hβ broad emission line light curves are measured for a set of quasars for periods ranging from dozens to more than a hundred epochs between 2017 May and 2020 July. Accurate time lags between the variations of the Hβ broad-line fluxes and the optical continuum strength are obtained for all 15 quasars, ranging from 17.0-3.2+2.5 to 95.9-23.9+7.1 days in the rest frame. The virial masses of the central supermassive black holes are derived for all 15 quasars, ranging between 0.50-0.19+0.18 and 19.17-2.73+2.98 in units of 107Mo˙. For 11 of the objects in our sample, this is the first reverberation analysis to be published. Of the rest, two objects have been the subject of previous reverberation studies, but we determine time lags for these that are only half as long as those found in the earlier investigations, which had only been able to sample much more sparsely. The remaining two objects have previously been monitored with high sampling rates. Our results here are consistent with the earlier findings, in the sense that the time lag and the line width vary inversely, consistent with virialization. © 2021. The American Astronomical Society. All rights reserved.
We acknowledge the support of the staff of the CAHA 2.2 m telescope. This work is based on observations collected at the Centro Astronomico Hispanoen Andalucia (CAHA) at Calar Alto, operated jointly by the Andalusian Universities and the Instituto de Astrofisica de Andalucia (CSIC). This research is supported by the National Key R&D Program of China (2016YFA0400701, 2016YFA0400702), by the National Science Foundation of China (11721303, 11773029, 11833008, 11873048, 11922304, 11973029, 11991051, 11991052, 11991054, 12003036, 12022301), by the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (CAS; QYZDJ-SSW-SLH007), by the CAS Key Research Program (KJZDEW-M06), and by the Strategic Priority Research Program of the CAS (XDB23000000, XDB23010400). M.B. benefited from the support of the Chinese Academy of Sciences President's International Fellowship Initiative, grant No.2018VMA0005. J.A. acknowledges financial support from the State Agency for Research of the Spanish MCIU via the "Center of Excellence Severo Ochoa" award to the Instituto de Astrofisica de Andalucia (SEV-2017-0709).
Databáze: OpenAIRE
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