The Lick AGN Monitoring Project 2016: Dynamical Modeling of Velocity-resolved Hβ Lags in Luminous Seyfert Galaxies

We have modeled the velocity-resolved reverberation response of the Hβ broad emission line in nine Seyfert 1 galaxies from the Lick Active Galactic Nucleus (AGN) Monitoring Project 2016 sample, drawing inferences on the geometry and structure of the low-ionization broad-line region (BLR) and the mass of the central supermassive black hole. Overall, we find that the Hβ BLR is generally a thick disk viewed at low to moderate inclination angles. We combine our sample with prior studies and investigate line-profile shape dependence, such as log10(FWHM/σ) , on BLR structure and kinematics and search for any BLR luminosity-dependent trends. We find marginal evidence for an anticorrelation between the profile shape of the broad Hβ emission line and the Eddington ratio, when using the rms spectrum. However, we do not find any luminosity-dependent trends, and conclude that AGNs have diverse BLR structure and kinematics, consistent with the hypothesis of transient AGN/BLR conditions rather than systematic trends.

[1]  Wei Zheng,et al.  The Lick AGN Monitoring Project 2016: Velocity-resolved Hβ Lags in Luminous Seyfert Galaxies , 2021, The Astrophysical Journal.

[2]  T. Treu,et al.  A Detailed View of the Broad-line Region in NGC 3783 from Velocity-resolved Reverberation Mapping , 2021, The Astrophysical Journal.

[3]  L. Ho,et al.  Reverberation Mapping of Two Luminous Quasars: The Broad-line Region Structure and Black Hole Mass , 2021, The Astrophysical Journal.

[4]  P. Hall,et al.  AGN STORM 2. I. First results: A Change in the Weather of Mrk 817 , 2021, The Astrophysical Journal.

[5]  H. T. Liu,et al.  Velocity-resolved Reverberation Mapping of Changing-look AGN NGC 2617 , 2021, The Astrophysical Journal.

[6]  D. N. Okhmat,et al.  Space Telescope and Optical Reverberation Mapping Project. XII. Broad-line Region Modeling of NGC 5548 , 2020, The Astrophysical Journal.

[7]  T. Treu,et al.  Modelling the AGN broad-line region using single-epoch spectra − II. Nearby AGNs , 2019, Monthly notices of the Royal Astronomical Society.

[8]  L. Ho,et al.  Monitoring AGNs with Hβ Asymmetry. I. First Results: Velocity-resolved Reverberation Mapping , 2018, The Astrophysical Journal.

[9]  D. N. Okhmat,et al.  Velocity-resolved Reverberation Mapping of Five Bright Seyfert 1 Galaxies , 2018, The Astrophysical Journal.

[10]  T. Treu,et al.  Stability of the Broad-line Region Geometry and Dynamics in Arp 151 Over Seven Years , 2018, 1803.02318.

[11]  C. D. Laney,et al.  THE LICK AGN MONITORING PROJECT 2011: DYNAMICAL MODELING OF THE BROAD-LINE REGION IN Mrk 50 , 2012, The Astrophysical Journal.

[12]  T. Treu,et al.  The Structure of the Broad-line Region in Active Galactic Nuclei. II. Dynamical Modeling of Data From the AGN10 Reverberation Mapping Campaign , 2017, 1705.02346.

[13]  D. N. Okhmat,et al.  Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548 , 2017, 1702.01177.

[14]  S. B. Cenko,et al.  THE LICK AGN MONITORING PROJECT 2011: SPECTROSCOPIC CAMPAIGN AND EMISSION-LINE LIGHT CURVES , 2015, 1503.01146.

[15]  T. Treu,et al.  Constraints on the broad line region from regularized linear inversion: velocity–delay maps for five nearby active galactic nuclei , 2015, 1502.02031.

[16]  C. A. Oxborrow,et al.  Planck2015 results , 2015, Astronomy & Astrophysics.

[17]  Rachel Street,et al.  Science operations for LCOGT: a global telescope network , 2014, Astronomical Telescopes and Instrumentation.

[18]  Brendon J. Brewer,et al.  Modelling reverberation mapping data – II. Dynamical modelling of the Lick AGN Monitoring Project 2008 data set , 2013, 1311.6475.

[19]  D. Dragomir,et al.  Las Cumbres Observatory Global Telescope Network , 2013, 1305.2437.

[20]  K. Korista,et al.  The broad emission-line region: the confluence of the outer accretion disc with the inner edge of the dusty torus , 2012, 1207.6339.

[21]  Yolanda Stapleton Love Love Love , 2008 .

[22]  B. Kelly Some Aspects of Measurement Error in Linear Regression of Astronomical Data , 2007, 0705.2774.

[23]  B. Peterson,et al.  Systematic effects in measurement of black hole masses by emission-line reverberation of active galactic nuclei: Eddington ratio and inclination , 2006, astro-ph/0603460.

[24]  Paul S. Smith,et al.  Polarimetric Observations of 15 Active Galactic Nuclei at High Frequencies: Jet Kinematics from Bimonthly Monitoring with the Very Long Baseline Array , 2005, astro-ph/0502501.

[25]  Gustavo A. Medrano-Cerda,et al.  The Liverpool Telescope: performance and first results , 2004, SPIE Astronomical Telescopes + Instrumentation.

[26]  B. Peterson,et al.  Observational Requirements for High‐Fidelity Reverberation Mapping , 2002, astro-ph/0201182.

[27]  Bradley M. Peterson,et al.  REVERBERATION MAPPING OF ACTIVE GALACTIC NUCLEI , 1993 .

[28]  M. Whittle Virial and Jet-induced Velocities in Seyfert Galaxies. I. A Compilation of Narrow Line Region and Host Galaxy Properties , 1992 .

[29]  Christopher F. McKee,et al.  Reverberation mapping of the emission line regions of Seyfert galaxies and quasars. , 1982 .