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  • What Does the Geometry of t...
    Villafaña, Lizvette; Williams, Peter R.; Treu, Tommaso; Brewer, Brendon J.; Barth, Aaron J.; U, Vivian; Bennert, Vardha N.; Guo, Hengxiao; Bentz, Misty C.; Canalizo, Gabriela; Filippenko, Alexei V.; Gates, Elinor; Joner, Michael D.; Malkan, Matthew A.; Woo, Jong-Hak; Abolfathi, Bela; Bohn, Thomas; Bostroem, K. Azalee; Brandel, Andrew; Brink, Thomas G.; Channa, Sanyum; Cosens, Maren; Donohue, Edward; Halevi, Goni; Hood, Carol E.; Horst, J. Chuck; de Kouchkovsky, Maxime; Kuhn, Benjamin; Leonard, Douglas C.; Michel, Raúl; B. Olaes, Melanie Kae; Park, Daeseong; Runco, Jordan N.; Sexton, Remington O.; Shivvers, Isaac; Spencer, Chance L.; Stahl, Benjamin E.; Stegman, Samantha; Walsh, Jonelle L.; Zheng, WeiKang

    The Astrophysical journal, 05/2023, Letnik: 948, Številka: 2
    Journal Article

    Abstract We combine our dynamical modeling black-hole mass measurements from the Lick AGN Monitoring Project 2016 sample with measured cross-correlation time lags and line widths to recover individual scale factors, f , used in traditional reverberation-mapping analyses. We extend our sample by including prior results from Code for AGN Reverberation and Modeling of Emission Lines ( caramel ) studies that have utilized our methods. Aiming to improve the precision of black-hole mass estimates, as well as uncover any regularities in the behavior of the broad-line region (BLR), we search for correlations between f and other AGN/BLR parameters. We find (i) evidence for a correlation between the virial coefficient log 10 ( f mean , σ ) and black-hole mass, (ii) marginal evidence for a similar correlation between log 10 ( f rms , σ ) and black-hole mass, (iii) marginal evidence for an anticorrelation of BLR disk thickness with log 10 ( f mean , FWHM ) and log 10 ( f rms , FWHM ) , and (iv) marginal evidence for an anticorrelation of inclination angle with log 10 ( f mean , FWHM ) , log 10 ( f rms , σ ) , and log 10 ( f mean , σ ) . Last, we find marginal evidence for a correlation between line-profile shape, when using the root-mean-square spectrum, log 10 ( FWHM / σ ) rms , and the virial coefficient, log 10 ( f rms , σ ) , and investigate how BLR properties might be related to line-profile shape using caramel models.