Reverberation Mapping Measurements of Black Hole Masses and Broad-Line Region Kinematics in Mrk 817 and NGC 7469

Abstract

We present the results from a spectroscopic monitoring campaign to obtain reverberation-mapping measurements and investigate the broad-line region kinematics for active galactic nuclei (AGN) of Mrk~817 and NGC~7469. This campaign was undertaken with the Lijiang 2.4-meter telescope, the median spectroscopic sampling is 2.0 days for Mrk~817 and 1.0 days for NGC~7469. We detect time lags of the broad emission lines including H$\beta$, H$\gamma$, He~{\sc ii} and He~{\sc i} for both AGNs, and including Fe~{\sc ii} for Mrk~817 with respect to the varying AGN continuum at 5100~Å. Investigating the relationship between line widths and time lags of the broad emission lines, we find that the BLR dynamics of Mrk~817 and NGC~7469 are consistent with the virial prediction. We estimate the masses of central supermassive black hole (SMBH) and the accretion rates of both AGNs. Using the data of this campaign, we construct the velocity-resolved lag profiles of the broad H$\gamma$, H$\beta$, and He~{\sc i} lines for Mrk~817, which show almost the same kinematic signatures that the time lags in the red wing are slightly larger than the time lags in the blue wing. For NGC~7469, we only clearly construct the velocity-resolved lag profiles of the broad H$\gamma$ and H$\beta$, which show very similar kinematic signatures to the BLR of Mrk~817. These signatures indicate that the BLR of Keplerian motion in both AGNs seemingly has outflowing components during the monitoring period. We discuss the kinematics of the BLR and the measurements including SMBH mass and accretion rates.

19 pages, 11 figures, accepted for publication in ApJ

References in corpus (28)

• The All-Sky Automated Survey for Supernovae (ASAS-SN) Light Curve Server v1.0
• Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. IV. H$\beta$ Time Lags and Implications for Super-Eddington Accretion
• The Radius-Luminosity Relationship Depends on Optical Spectra in Active Galactic Nuclei
• The Black Hole Mass Scale of Classical and Pseudo Bulges in Active Galaxies
• Dust inflated accretion disc as the origin of the Broad Line Region in Active Galactic Nuclei
• A Systematic Analysis of Fe II Emission in Quasars: Evidence for Inflow to the Central Black Hole
• The Near-Infrared Broad Emission Line Region of Active Galactic Nuclei -- I. The Observations
• Self-shadowing Effects of Slim Accretion Disks in Active Galactic Nuclei: Diverse Appearance of the Broad-line Region
• Supermassive Black Holes with High Accretion Rates in Active Galactic Nuclei. III. Detection of Fe II Reverberation in Nine Narrow-Line Seyfert 1 Galaxies
• Reverberation Mapping of the Seyfert 1 Galaxy NGC 7469
• Failed radiatively Accelerated Dusty Outflow model of the Broad Line Region in Active Galactic Nuclei. I. Analytical solution
• Reverberation Mapping of the Broad-line Region in NGC 5548: Evidence for Radiation Pressure?
• Stratified disc wind models for the AGN broad-line region: ultraviolet, optical and X-ray properties
• Evidence for variability timescale dependent UV/X-ray delay in Seyfert 1 AGN NGC 7469
• Reverberation mapping of narrow-line Seyfert 1 galaxy I Zwicky 1: black hole mass
• Reverberation Mapping of Changing-look Active Galactic Nucleus NGC 3516
• Radiation hydrodynamics models of Active Galactic Nuclei: Beyond the central parsec
• Monitoring AGNs with Hβ Asymmetry. II. Reverberation Mapping of Three Seyfert Galaxies Historically Displaying Hβ Profiles with Changing Asymmetry: Mrk 79, NGC 3227, and Mrk 841
• Active Galactic Nuclei with Ultra-fast Outflows Monitoring Project: The Broad-line Region of Mrk 79 as a Disk Wind
• Complex emission line region of Mrk 817
• Do Reverberation Mapping Analyses Provide an Accurate Picture of the Broad Line Region?
• The reverberation signatures of rotating disc winds in active galactic nuclei
• An extended size-luminosity relation for the reverberation-mapped AGNs: the role of the accretion rate
• X-ray and UV Monitoring of the Seyfert 1.5 Galaxy Markarian 817
• Long-term optical spectral monitoring of NGC 7469
• Multi-wavelength campaign on NGC7469 II. Column densities and variability in the X-ray spectrum
• The Inner Accretion Flow in the Resurgent Seyfert-1.2 AGN Mrk 817
• SDSS J153636.22+044127.0 and its analogues: shocked outflows, not active binary black holes

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