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Broad-line Region of the Quasar PG 2130+099 from a Two-Year Reverberation Mapping Campaign with High Cadence

Broad-line Region of the Quasar PG 2130+099 from a Two-Year Reverberation Mapping Campaign with High Cadence

Authors :
Hu, Chen
Li, Yan-Rong
Du, Pu
Zhang, Zhi-Xiang
Li, Sha-Sha
Huang, Ying-Ke
Lu, Kai-Xing
Bai, Jin-Ming
Ho, Luis C.
Bian, Wei-Hao
Brotherton, Michael S.
Yuan, Ye-Fei
Aceituno, Jesús
Winkler, Hartmut
Wang, Jian-Min
Hu, Chen
Li, Yan-Rong
Du, Pu
Zhang, Zhi-Xiang
Li, Sha-Sha
Huang, Ying-Ke
Lu, Kai-Xing
Bai, Jin-Ming
Ho, Luis C.
Bian, Wei-Hao
Brotherton, Michael S.
Yuan, Ye-Fei
Aceituno, Jesús
Winkler, Hartmut
Wang, Jian-Min
Publication Year :
2020

Abstract

As one of the most interesting Seyfert 1 galaxies, PG 2130+099 has been the target of several reverberation mapping (RM) campaigns over the years. However, its measured broad H$\beta$ line responses have been inconsistent, with time lags of $\sim$200 days, $\sim$25 days, and $\sim$10 days being reported for different epochs while its optical luminosity changed no more than 40%. To investigate this issue, we conducted a new RM-campaign with homogenous and high cadence (about $\sim$3 days) for two years during 2017--2019 to measure the kinematics and structure of the ionized gas. We successfully detected time lags of broad H$\beta$, He II, He I, and Fe II lines with respect to the varying 5100\AA continuum, revealing a stratified structure that is likely virialized with Keplerian kinematics in the first year of observations, but an inflow kinematics of the broad-line region from the second year. With a central black hole mass of $0.97_{-0.18}^{+0.15}\times 10^7~M_{\odot}$, PG 2130+099 has an accretion rate of $10^{2.1\pm0.5}L_{\rm Edd}c^{-2}$, where $L_{\rm Edd}$ is the Eddington luminosity and $c$ is speed of light, implying that it is a super-Eddington accretor and likely possesses a slim, rather than thin, accretion disk. The fast changes of the ionization structures of the three broad lines remain puzzling.<br />Comment: 15 pages, 11 figures, accepted for publication in The Astrophysical Journal

Details

Database :
OAIster
Publication Type :
Electronic Resource
Accession number :
edsoai.on1363522181
Document Type :
Electronic Resource
Full Text :
https://doi.org/10.3847.1538-4357.ab6a17