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  • The Lick AGN Monitoring Project 2016: Dynamical Modeling of Velocity-Resolved H\b{eta} Lags in Luminous Seyfert Galaxies
    Villafaña, Lizvette; Williams, Peter R; Treu, Tommaso; Brewer, Brendon J; Barth, Aaron J; Vivian, U; Bennert, Vardha N; Vogler, H Alexander; Guo, Hengxiao; Bentz, Misty C; Canalizo, Gabriela; Filippenko, Alexei V; Gates, Elinor; Hamann, Frederick; Joner, Michael D; Malkan, Matthew A; Jong-Hak Woo; Abolfathi, Bela; Abramson, L E; Armen, Stephen F; Hyun-Jin Bae; Bohn, Thomas; Boizelle, Benjamin D; Bostroem, Azalee; Brandel, Andrew; Brink, Thomas G; Sanyum Channa; Cooper, M C; Cosens, Maren; Donohue, Edward; Fillingham, Sean P; Gonzalez-Buitrago, Diego; Halevi, Goni; Halle, Andrew; Hood, Carol E; Horne, Keith; Horst, J Chuck; de Kouchkovsky, Maxime; Kuhn, Benjamin; Kumar, Sahana; Leonard, Douglas C; Loveland, Donald; Manzano-King, Christina; McHardy, Ian; Michel, Raul; Melanie Kae B Olaes; Park, Daeseong; Park, Songyoun; Liuyi Pei; Ross, Timothy W; Runco, Jordan N; Samuel, Jenna; Sanchez, Javier; Scott, Bryan; Sexton, Remington O; Shin, Jaejin; Shivvers, Isaac; Spencer, Chance L; Stahl, Benjamin E; Stegman, Samantha; Stomberg, Isak; Valenti, Stefano; Walsh, Jonelle L; Heechan Yuk; Zheng, WeiKang

    arXiv.org, 03/2022
    Paper, Journal Article

    We have modeled the velocity-resolved reverberation response of the H\b{eta} broad emission line in nine Seyfert 1 galaxies from the Lick Active Galactic Nucleus (AGN) Monitioring 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 H\b{eta} 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/{\sigma}), 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 H\b{eta} emission line and the Eddington ratio, when using the root-mean-square 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.

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