# The lick agn monitoring project: Broad-line region radii and black hole masses from reverberation mapping of Hβ

@article{Bentz2009TheLA,
title={The lick agn monitoring project: Broad-line region radii and black hole masses from reverberation mapping of H$\beta$},
author={Misty C. Bentz and Jonelle L. Walsh and Aaron J. Barth and Nairn Reese Baliber and Nicola Bennert and Gabriela Canalizo and Alexei V. Filippenko and Mohan Ganeshalingam and Elinor L. Gates and Jenny E. Greene and Marton G. Hidas and Kyle D. Hiner and Nicholas Y. Lee and Weidong Li and Matthew A. Malkan and Takeo Minezaki and Yu Sakata and Frank J. D. Serduke and Jeffrey M Silverman and Thea N. Steele and Daniel Stern and Rachel A. Street and Carol E. Thornton and Tommaso Treu and Xiaofeng Wang and Jong-Hak Woo and Yuzuru Yoshii Dept. of Physics and Astronomy and U. C. Irvine and Dept. of Physics and U. C. Santa Barbara and Las Cumbres Observatory Global Telescope and Institute of Geophysics and Planetary Physics and UC Riverside and Dept. of Physics Astronomy and U. California Berkeley and Lick Observatory and Princeton University Observatory and School of Cosmic Physics and University of Western Sydney and Ucla and Institute of Radio Astronomy and School of Materials Science and University of Tokyo and Jet propulsion Laboratory and Physics Dept. and Tsinghua Center for Astrophysics and Tsinghua University and Research Center for the Early Universe},
journal={The Astrophysical Journal},
year={2009},
volume={705},
pages={199-217}
}
We have recently completed a 64-night spectroscopic monitoring campaign at the Lick Observatory 3-m Shane telescope with the aim of measuring the masses of the black holes in 12 nearby (z < 0: 05) Seyfert 1 galaxies with expected masses in the range � 10 6 -10 7 Mand also the well-studied nearby active galactic nucleus (AGN) NGC 5548. Nine of the objects in the sample (including NGC 5548) showed optical variability of sufficient strength during the monitoring campaign to all ow for a time lag… Expand
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