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

January 2022 • 2022ApJ...925...52U

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 • de Kouchkovsky, Maxime • 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

Abstract • 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) ≈ 10⁴⁴ erg s^-1 and predicted Hβ lags of ~20-30 days or black hole masses of 10⁷-10^8.5 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 Hβ emission-line light curves, integrated Hβ lag times (8-30 days) measured against V-band continuum light curves, velocity-resolved reverberation lags, line widths of the broad Hβ 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.

Links

• PREPRINT http://arxiv.org/abs/2111.14849
• NED https://ned.ipac.caltech.edu/uri/NED::InRefcode/2022ApJ...925...52U
• ELECTR https://iopscience.iop.org/article/10.3847/1538-4357/ac3d26
• SIMBAD http://simbad.u-strasbg.fr/simbo.pl?bibcode=2022ApJ...925...52U
• PDF https://iopscience.iop.org/article/10.3847/1538-4357/ac3d26/pdf
• DATA http://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/925/52