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Cited by 444

The DOI matches its Crossref record; 41 of the 41 references it cites were found in a registry or an index.

THE LICK AGN MONITORING PROJECT: BROAD-LINE REGION RADII AND BLACK HOLE MASSES FROM REVERBERATION MAPPING OF Hβ

Open access
Bentz, Misty C., Walsh, Jonelle L., Barth, Aaron J., Baliber, Nairn, Bennert, Vardha Nicola, Canalizo, Gabriela, Filippenko, Alexei V., Ganeshalingam, Mohan, Gates, Elinor L., Greene, Jenny E., Hidas, Marton G., Hiner, Kyle D., Lee, Nicholas, Li, Weidong, Malkan, Matthew A., Minezaki, Takeo, Sakata, Yu, Serduke, Frank J. D., Silverman, Jeffrey M., Steele, Thea N., Stern, Daniel, Street, Rachel A., Thornton, Carol E., Treu, Tommaso, Wang, Xiaofeng, Woo, Jong-Hak, Yoshii, Yuzuru·2009·The Astrophysical Journal
DOI 10.1088/0004-637x/705/1/199
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Abstract

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 M ☉ and 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 allow for a time lag to be measured between the continuum fluctuations and the response to these fluctuations in the broad Hβ emission. We present here the light curves for all the objects in this sample and the subsequent Hβ time lags for the nine objects where these measurements were possible. The Hβ lag time is directly related to the size of the broad-line region (BLR) in AGNs, and by combining the Hβ lag time with the measured width of the Hβ emission line in the variable part of the spectrum, we determine the virial mass of the central supermassive black hole in these nine AGNs. The absolute calibration of the black hole masses is based on the normalization derived by Onken et al., which brings the masses determined by reverberation mapping into agreement with the local M BH –σ ⋆ relationship for quiescent galaxies. We also examine the time lag response as a function of velocity across the Hβ line profile for six of the AGNs. The analysis of four leads to rather ambiguous results with relatively flat time lags as a function of velocity. However, SBS 1116+583A exhibits a symmetric time lag response around the line center reminiscent of simple models for circularly orbiting BLR clouds, and Arp 151 shows an asymmetric profile that is most easily explained by a simple gravitational infall model. Further investigation will be necessary to fully understand the constraints placed on the physical models of the BLR by the velocity-resolved response in these objects.

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Metadata

Authors
Bentz, M. C., Walsh, J. L., Barth, A. J., Baliber, N., Bennert, V. N., Canalizo, G., Filippenko, A. V., Ganeshalingam, M., Gates, E. L., Greene, J. E., Hidas, M. G., Hiner, K. D., Lee, N., Li, W., Malkan, M. A., Minezaki, T., Sakata, Y., Serduke, F. J. D., Silverman, J. M., Steele, T. N., Stern, D., Street, R. A., Thornton, C. E., Treu, T., Wang, X., Woo, J.-H., & Yoshii, Y.
Venue
The Astrophysical Journal
Publisher
American Astronomical Society
Published
2009-10-08
Volume
705
Issue
1
Pages
199-217
ISSN
  • 0004-637X (ISSN-L)
  • 1538-4357
DOI
10.1088/0004-637x/705/1/199
OpenAlex
W2031582484
Cited by
444
References
41
FWCI
14.39
Type
journal article
Language
en
Open access
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CoChat. (2026). Citation check: THE LICK AGN MONITORING PROJECT: BROAD-LINE REGION RADII AND BLACK HOLE MASSES FROM REVERBERATION MAPPING OF Hβ. https://app.cochat.ai/papers/10.1088/0004-637x/705/1/199
The paper
Bentz, M. C., Walsh, J. L., Barth, A. J., Baliber, N., Bennert, V. N., Canalizo, G., Filippenko, A. V., Ganeshalingam, M., Gates, E. L., Greene, J. E., Hidas, M. G., Hiner, K. D., Lee, N., Li, W., Malkan, M. A., Minezaki, T., Sakata, Y., Serduke, F. J. D., Silverman, J. M., . . . Yoshii, Y. (2009). THE LICK AGN MONITORING PROJECT: BROAD-LINE REGION RADII AND BLACK HOLE MASSES FROM REVERBERATION MAPPING OF Hβ. The Astrophysical Journal. https://doi.org/10.1088/0004-637x/705/1/199

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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