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

• Published in: The Astrophysical journal 2022-01, Vol.925 (1), p.52
• Main Authors: U, Vivian, Barth, Aaron J., Vogler, H. Alexander, Guo, Hengxiao, Treu, Tommaso, Bennert, Vardha N., Canalizo, Gabriela, Filippenko, Alexei V., Gates, Elinor, Hamann, Frederick, Joner, Michael D., Malkan, Matthew A., Pancoast, Anna, Williams, Peter R., Woo, Jong-Hak, Abolfathi, Bela, Abramson, L. E., Armen, Stephen F., Bae, Hyun-Jin, Bohn, Thomas, Boizelle, Benjamin D., Bostroem, Azalee, Brandel, Andrew, Brink, Thomas G., Channa, Sanyum, Cooper, M. C., Cosens, Maren, Donohue, Edward, Fillingham, Sean P., González-Buitrago, Diego, Halevi, Goni, Halle, Andrew, Hood, Carol E., Horne, Keith, Horst, J. Chuck, Kouchkovsky, Maxime de, Kuhn, Benjamin, Kumar, Sahana, Leonard, Douglas C., Loveland, Donald, Manzano-King, Christina, McHardy, Ian, Michel, Raúl, Olaes, Melanie Kae B., Park, Daeseong, Park, Songyoun, Pei, Liuyi, Ross, Timothy W., Runco, Jordan N., Samuel, Jenna, Sánchez, Javier, Scott, Bryan, Sexton, Remington O., Shin, Jaejin, Shivvers, Isaac, Spencer, Chance L., Stahl, Benjamin E., Stegman, Samantha, Stomberg, Isak, Valenti, Stefano, Villafaña, L., Walsh, Jonelle L., Yuk, Heechan, Zheng, WeiKang
• Format: Article
• Language: English
• Subjects: Active galactic nuclei; ASTRONOMY AND ASTROPHYSICS; Astrophysics; Black holes; Estimates; Galaxies; Kinematics; Light curve; Luminosity; Monitoring; Quasars; Red shift; Reverberation mapping; Seyfert galaxies; Stars & galaxies; Supermassive black holes; Velocity
• ISSN: 0004-637X; 1538-4357
• DOI: 10.3847/1538-4357/ac3d26

We carried out spectroscopic monitoring of 21 low-redshift Seyfert 1 galaxies using the Kast double spectrograph on the 3 m Shane telescope at Lick Observatory from 2016 April to 2017 May. Targeting active galactic nuclei (AGNs) with luminosities of λ L λ (5100 Å) ≈ 10 44 erg s −1 and predicted H β lags of ∼20–30 days or black hole masses of 10 7 –10 8.5 M ⊙ , our campaign probes luminosity-dependent trends in broad-line region (BLR) structure and dynamics as well as to improve calibrations for single-epoch estimates of quasar black hole masses. Here we present the first results from the campaign, including H β emission-line light curves, integrated H β lag times (8–30 days) measured against V -band continuum light curves, velocity-resolved reverberation lags, line widths of the broad H β components, and virial black hole mass estimates (10 7.1 –10 8.1 M ⊙ ). Our results add significantly to the number of existing velocity-resolved lag measurements and reveal a diversity of BLR gas kinematics at moderately high AGN luminosities. AGN continuum luminosity appears not to be correlated with the type of kinematics that its BLR gas may exhibit. Follow-up direct modeling of this data set will elucidate the detailed kinematics and provide robust dynamical black hole masses for several objects in this sample.