Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548

Pei, L.; Fausnaugh, M. M.; Barth, A. J.; Peterson, B. M.; Bentz, M. C.; De Rosa, G.; Denney, K. D.; Goad, M. R.; Kochanek, C. S.; Korista, K. T.; Kriss, G. A.; Pogge, R. W.; Bennert, V. N.; Brotherton, M.; Clubb, K. I.; Dalla Bontà, E.; Filippenko, A. V.; Greene, J. E.; Grier, C. J.; Vestergaard, M.; Zheng, W.; Adams, Scott M.; Beatty, Thomas G.; Bigley, A.; Brown, Jacob E.; Brown, Jonathan S.; Canalizo, G.; Comerford, J. M.; Coker, Carl T.; Corsini, E. M.; Croft, S.; Croxall, K. V.; Deason, A. J.; Eracleous, Michael; Fox, O. D.; Gates, E. L.; Henderson, C. B.; Holmbeck, E.; Holoien, T. W. -S.; Jensen, J. J.; Johnson, C. A.; Kelly, P. L.; Kim, S.; King, A.; Lau, M. W.; Li, Miao; Lochhaas, Cassandra; Ma, Zhiyuan; Manne-Nicholas, E. R.; Mauerhan, J. C.; Malkan, M. A.; McGurk, R.; Morelli, L.; Mosquera, Ana; Mudd, Dale; Sanchez, F. Muller; Nguyen, M. L.; Ochner, P.; Ou-Yang, B.; Pancoast, A.; Penny, Matthew T.; Pizzella, A.; Poleski, Radosław; Runnoe, Jessie; Scott, B.; Schimoia, Jaderson S.; Shappee, B. J.; Shivvers, I.; Simonian, Gregory V.; Siviero, A.; Somers, Garrett; Stevens, Daniel J.; Strauss, M. A.; Tayar, Jamie; Tejos, N.; Treu, T.; Van Saders, J.; Vican, L.; Villanueva, S.; Yuk, H.; Zakamska, N. L.; Zhu, W.; Anderson, M. D.; Arévalo, P.; Bazhaw, C.; Bisogni, S.; Borman, G. A.; Bottorff, M. C.; Brandt, W. N.; Breeveld, A. A.; Cackett, E. M.; Carini, M. T.; Crenshaw, D. M.; De Lorenzo-Cáceres, A.; Dietrich, M.; Edelson, R.; Efimova, N. V.; Ely, J.; Evans, P. A.; Ferland, G. J.; Flatland, K.; Gehrels, N.; Geier, S.; Gelbord, J. M.; Grupe, D.; Gupta, A.; Hall, P. B.; Hicks, S.; Horenstein, D.; Horne, Keith; Hutchison, T.; Im, M.; Joner, M. D.; Jones, J.; Kaastra, J.; Kaspi, S.; Kelly, B. C.; Kennea, J. A.; Kim, M.; Kim, S. C.; Klimanov, S. A.; Lee, J. C.; Leonard, D. C.; Lira, P.; MacInnis, F.; Mathur, S.; McHardy, I. M.; Montouri, C.; Musso, R.; Nazarov, S. V.; Netzer, H.; Norris, R. P.; Nousek, J. A.; Okhmat, D. N.; Papadakis, I.; Parks, J. R.; Pott, J. -U.; Rafter, S. E.; Rix, H. -W.; Saylor, D. A.; Schnülle, K.; Sergeev, S. G.; Siegel, M.; Skielboe, A.; Spencer, M.; Starkey, D.; Sung, H. -I.; Teems, K. G.; Turner, C. S.; Uttley, P.; Villforth, C.; Weiss, Y.; Woo, J. -H.; Yan, H.; Young, S.; Zu, Y.

doi:10.3847/1538-4357/aa5eb1

Title: Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548

Abstract

Here, we present the results of an optical spectroscopic monitoring program targeting NGC 5548 as part of a larger multiwavelength reverberation mapping campaign. The campaign spanned 6 months and achieved an almost daily cadence with observations from five ground-based telescopes. The Hβ and He II λ4686 broad emission-line light curves lag that of the 5100 Å optical continuum by $${4.17}_{-0.36}^{+0.36}\,\mathrm{days}$$ and $${0.79}_{-0.34}^{+0.35}\,\mathrm{days}$$, respectively. The Hβ lag relative to the 1158 Å ultraviolet continuum light curve measured by the Hubble Space Telescope is ~50% longer than that measured against the optical continuum, and the lag difference is consistent with the observed lag between the optical and ultraviolet continua. This suggests that the characteristic radius of the broad-line region is ~50% larger than the value inferred from optical data alone. We also measured velocity-resolved emission-line lags for Hβ and found a complex velocity-lag structure with shorter lags in the line wings, indicative of a broad-line region dominated by Keplerian motion. The responses of both the Hβ and He ii emission lines to the driving continuum changed significantly halfway through the campaign, a phenomenon also observed for C iv, Lyα, He II(+O III]), and Si Iv(+O Iv]) during the same monitoring period. Finally, given the optical luminosity of NGC 5548 during our campaign, the measured Hβ lag is a factor of five shorter than the expected value implied by the R _BLR–L _AGN relation based on the past behavior of NGC 5548.

Authors:

Pei, L. ^[1]; Fausnaugh, M. M. ^[2];

^[3]; Peterson, B. M. ^[4];

^[5]; De Rosa, G. ^[6]; Denney, K. D. ^[7];

^[8];

^[7]; Korista, K. T. ^[9]; Kriss, G. A. ^[10];

^[7];

^[11]; Brotherton, M. ^[12]; Clubb, K. I. ^[13]; Dalla Bontà, E. ^[14];

^[13]; Greene, J. E. ^[15];

^[16];

^[17] more »

Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy; Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Astronomy
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy
Univ. of California, Irvine, CA (United States). Dept. of Physics and Astronomy
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; The Ohio State Univ., Columbus, OH (United States). Center for Cosmology and AstroParticle Physics; Space Telescope Science Inst., Baltimore, MD (United States)
Georgia State Univ., Atlanta, GA (United States). Dept. of Physics and Astronomy
Space Telescope Science Inst., Baltimore, MD (United States)
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; The Ohio State Univ., Columbus, OH (United States). Center for Cosmology and AstroParticle Physics
Univ. of Leicester (United Kingdom). Dept. of Physics and Astronomy
Western Michigan Univ., Kalamazoo MI (United States). Dept. of Physics
Space Telescope Science Inst., Baltimore, MD (United States); Johns Hopkins Univ., Baltimore, MD (United States). Department of Physics and Astronomy
California Polytechnic State Univ. (CalPoly), San Luis Obispo, CA (United States). Dept. of Physics
Univ. of Wyoming, Laramie, WY (United States). Dept. of Physics and Astronomy
Univ. of California, Berkeley, CA (United States). Dept. of Astronomy
Univ. degli Studi di Padova (Italy). Dipartimento di Fisica e Astronomia; Istituto Nazionale di Astrofisica (INAF), Padova (Italy). Osservatorio Astronomico di Padova
Princeton Univ., NJ (United States). Dept. of Astrophysical Sciences
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; Pennsylvania State Univ., University Park, PA (United States). Eberly College of Science, Dept of Astronomy and Astrophysics; Pennsylvania State Univ., University Park, PA (United States). Inst. for Gravitation and the Cosmos
Univ. of Copenhagen (Denmark). The Niels Bohr Inst., Dark Cosmology Centre; Univ. of Arizona, Tucson, AZ (United States). Steward Observatory
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; California Inst. of Technology (CalTech), Pasadena, CA (United States). Cahill Center for Astrophysics
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; Pennsylvania State Univ., University Park, PA (United States). Eberly College of Science, Dept of Astronomy and Astrophysics; Pennsylvania State Univ., University Park, PA (United States). Center for Exoplanets and Habitable Worlds
Univ. of Missouri, Columbia, MO (United States). Dept. of Physics and Astronomy
Univ. of California, Riverside, CA (United States). Dept. of Astronomy
Univ. of Colorado, Boulder, CO (United States). Dept. of Astrophysical and Planetary Sciences
he Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; The Ohio State Univ., Columbus, OH (United States). Center for Cosmology and AstroParticle Physics
Univ. of California, Santa Cruz, CA (United States). Dept. of Astronomy and Astrophysics
Pennsylvania State Univ., University Park, PA (United States). Eberly College of Science, Dept of Astronomy and Astrophysics; Pennsylvania State Univ., University Park, PA (United States). Inst. for Gravitation and the Cosmos; Georgia Inst. of Technology, Atlanta, GA (United States). Center for Relativistic Astrophysics; Univ. of Washington, Seattle, WA (United States). Dept. of Astronomy
Lick Observatory, Mt. Hamilton, CA (United States)
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; California Inst. of Technology (CalTech), Pasadena, CA (United States). Jet Propulsion Lab.
Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
Univ. of Copenhagen (Denmark). The Niels Bohr Inst., Dark Cosmology Centre
Univ. of California, Santa Cruz, CA (United States). Santa Cruz Inst. for Particle Physics and Dept. of Physics
Stanford Univ., CA (United States). Dept. of Physics; Stanford Univ., CA (United States). Kavli Inst. for Particle Astrophysics and Cosmology; SLAC National Accelerator Lab., Menlo Park, CA (United States)
Univ. of Melbourne (Australia). School of Physics
Columbia Univ., New York, NY (United States). Dept. of Astronomy
Univ. of California, Santa Cruz, CA (United States). Dept. of Astronomy and Astrophysics; Max Planck Inst. for Astronomie, Heidelberg (Germany)
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; United States Naval Academy, Annapolis, MD (United States). Dept. of Physics
Univ. of California, Santa Barbara, CA (United States). Dept. of Physics; Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
Pennsylvania State Univ., University Park, PA (United States). Eberly College of Science, Dept of Astronomy and Astrophysics; Pennsylvania State Univ., University Park, PA (United States). Inst. for Gravitation and the Cosmos; Univ. of Michigan, Ann Arbor, MI (United States). Dept. of Astronomy
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; Univ. Federal do Rio do Sul, Porto Alegre (Brazil). Inst. de Fisica
Carnegie Observatories, Pasadena, CA (United States)
Univ. degli Studi di Padova (Italy). Dipartimento di Fisica e Astronomia
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; Vanderbilt Univ., Nashville, TN (United States). Dept. of Physics and Astronomy
Millennium Inst. of Astrophysics, Santiago (Chile); Pontifical Catholic Univ. of Chile, Santiago (Chile)
Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy; Univ. of California, Santa Barbara, CA (United States). Dept. of Physics
Johns Hopkins Univ., Baltimore, MD (United States). Department of Physics and Astronomy
Univ. de Valparaiso (Chile). Inst. de Fisica y Astronomia
The Ohio State Univ., Columbus, OH (United States). Dept of Astronomy; Osservatorio Astrofisico di Arcetri, Firenze (Italy)
Crimean Astrophysical Observatory, Crimea (Russia)
Southwestern Univ., Georgetown, TX (United States). Fountainwood Observatory, Dept. of Physics
Pennsylvania State Univ., University Park, PA (United States). Eberly College of Science, Dept of Astronomy and Astrophysics; Pennsylvania State Univ., University Park, PA (United States). Inst. for Gravitation and the Cosmos; Pennsylvania State Univ., University Park, PA (United States). Dept. of Physics
Univ. College London (UCL), Surrey (United Kingdom). Mullard Space Science Lab. (MSSL)
Wayne State Univ., Detroit, MI (United States). Dept. of Physics and Astronomy
Western Kentucky Univ., Bowling Green, KY (United States)
Univ. of St. Andrews, Scotland (United Kingdom). School of Physics and Astronomy
Ohio Univ., Athens, OH (United States). Dept. of Physics and Astronomy; Worcester State Univ., MA (United States)
Univ. of Maryland, College Park, MD (United States). Dept. of Astronomy
Pulkovo Observatory, St. Petersburg (Russia)
Univ. of Kentucky, Lexington, KY (United States). Dept. of Physics and Astronomy
San Diego State Univ., CA (United States). Dept. of Astronomy
NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States). Astrophysics Science Division
Inst. de Astrofisica de Canarias, Tenerife (Spain); Univ. of La Laguna, Tenerife (Spain). Dept. de Astrofisica; Gran Telescopio Canarias (GRANTECAN), Tenerife (Spain)
Spectral Sciences Inc., Burlington, MA (United States); Eureka Scientific Inc., Oakland, CA (United States)
Morehead State Univ., KY (United States). Space Science Center
The Ohio State Univ., Columbus, OH (United States). Dept. of Astronomy
York Univ., Toronto, ON (Canada). Dept. of Physics and Astronomy
Western Kentucky Univ., Bowling Green, KY (United States). Dept. of Physics and Astronomy
Seoul National Univ. (Korea, Republic of). Dept. of Physics & Astronomy
Brigham Young Univ., Provo, UT (United States). Dept. of Physics and Astronomy
SRON Netherlands Inst. for Space Research, Utrecht (Netherlands); Univ. of Utrecht (Netherlands). Dept. of Physics and Astronomy; Leiden Univ. (Netherlands). Leiden Observatory
Tel Aviv Univ. (Israel). School of Physics and Astronomy; Technion-Israel Inst. of Tech., Haifa (Israel). Dept. of Physics
Univ. of California, Santa Barbara, CA (United States). Dept. of Physics
Pennsylvania State Univ., University Park, PA (United States). Eberly College of Science, Dept of Astronomy and Astrophysics
Korea Astronomy and Space Science Inst. (Korea)
Univ. de Chile, Santiago (Chile). Dept. de Astronomia
Univ. of Southampton (United Kingdom)
Univ. dell' Insubria, Como (Italy). Dept. of Applied Science and Technology (DISAT)
Tel Aviv Univ. (Israel). School of Physics and Astronomy
Univ. of Crete (Greece). Inst. of Theoretical and Computational Physics, Dept. of Physics; Inst. of Electronic Structure and Laser (IESL), Crete (Greece). Foundation for Research and Technology (FORTH)
Max Planck Inst. for Astronomie, Heidelberg (Germany)
Technion-Israel Inst. of Tech., Haifa (Israel). Dept. of Physics; Univ. of Haifa (Israel). Dept. of Physics
Las Cumbres Observatory Global Telescope Network, Goleta, CA (United States)
Univ. of Amsterdam (Netherlands). Anton Pannekoek Astronomical Inst.
Univ. of Bath (United Kingdom)
Technion-Israel Inst. of Tech., Haifa (Israel). Dept. of Physics
The Ohio State Univ., Columbus, OH (United States). Center for Cosmology and AstroParticle Physics; Carnegie Mellon Univ., Pittsburgh, PA (United States). Dept. of Physics

Publication Date:: Fri Mar 10 00:00:00 EST 2017

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States)

Sponsoring Org.:: USDOE; National Science Foundation (NSF); National Aeronautics and Space Administration (NASA); UK Science and Technology Facilities Council; National Research Foundation of Korea (NRFK); Netherlands Organization for Scientific Research (NWO)

OSTI Identifier:: 1352630

Grant/Contract Number:: AC02-76SF00515; FG02-97ER25308; NAS5-26555; AST-1412693; AST-1008882; AST-1253702; AST-1211916; AST-1515876; AST-1312296; AST-1302093; ST/M001296/1; AST-0618209; DFF 4002-00275

Resource Type:: Accepted Manuscript

Journal Name:: The Astrophysical Journal (Online)

Additional Journal Information:: Journal Name: The Astrophysical Journal (Online); Journal Volume: 837; Journal Issue: 2; Journal ID: ISSN 1538-4357

Publisher:: Institute of Physics (IOP)

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS

Citation Formats


                    Pei, L., Fausnaugh, M. M., Barth, A. J., Peterson, B. M., Bentz, M. C., De Rosa, G., Denney, K. D., Goad, M. R., Kochanek, C. S., Korista, K. T., Kriss, G. A., Pogge, R. W., Bennert, V. N., Brotherton, M., Clubb, K. I., Dalla Bontà, E., Filippenko, A. V., Greene, J. E., Grier, C. J., Vestergaard, M., Zheng, W., Adams, Scott M., Beatty, Thomas G., Bigley, A., Brown, Jacob E., Brown, Jonathan S., Canalizo, G., Comerford, J. M., Coker, Carl T., Corsini, E. M., Croft, S., Croxall, K. V., Deason, A. J., Eracleous, Michael, Fox, O. D., Gates, E. L., Henderson, C. B., Holmbeck, E., Holoien, T. W. -S., Jensen, J. J., Johnson, C. A., Kelly, P. L., Kim, S., King, A., Lau, M. W., Li, Miao, Lochhaas, Cassandra, Ma, Zhiyuan, Manne-Nicholas, E. R., Mauerhan, J. C., Malkan, M. A., McGurk, R., Morelli, L., Mosquera, Ana, Mudd, Dale, Sanchez, F. Muller, Nguyen, M. L., Ochner, P., Ou-Yang, B., Pancoast, A., Penny, Matthew T., Pizzella, A., Poleski, Radosław, Runnoe, Jessie, Scott, B., Schimoia, Jaderson S., Shappee, B. J., Shivvers, I., Simonian, Gregory V., Siviero, A., Somers, Garrett, Stevens, Daniel J., Strauss, M. A., Tayar, Jamie, Tejos, N., Treu, T., Van Saders, J., Vican, L., Villanueva, S., Yuk, H., Zakamska, N. L., Zhu, W., Anderson, M. D., Arévalo, P., Bazhaw, C., Bisogni, S., Borman, G. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Cackett, E. M., Carini, M. T., Crenshaw, D. M., De Lorenzo-Cáceres, A., Dietrich, M., Edelson, R., Efimova, N. V., Ely, J., Evans, P. A., Ferland, G. J., Flatland, K., Gehrels, N., Geier, S., Gelbord, J. M., Grupe, D., Gupta, A., Hall, P. B., Hicks, S., Horenstein, D., Horne, Keith, Hutchison, T., Im, M., Joner, M. D., Jones, J., Kaastra, J., Kaspi, S., Kelly, B. C., Kennea, J. A., Kim, M., Kim, S. C., Klimanov, S. A., Lee, J. C., Leonard, D. C., Lira, P., MacInnis, F., Mathur, S., McHardy, I. M., Montouri, C., Musso, R., Nazarov, S. V., Netzer, H., Norris, R. P., Nousek, J. A., Okhmat, D. N., Papadakis, I., Parks, J. R., Pott, J. -U., Rafter, S. E., Rix, H. -W., Saylor, D. A., Schnülle, K., Sergeev, S. G., Siegel, M., Skielboe, A., Spencer, M., Starkey, D., Sung, H. -I., Teems, K. G., Turner, C. S., Uttley, P., Villforth, C., Weiss, Y., Woo, J. -H., Yan, H., Young, S., and Zu, Y. Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548.  United States: N. p., 2017. 
Web.  doi:10.3847/1538-4357/aa5eb1.

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                    Pei, L., Fausnaugh, M. M., Barth, A. J., Peterson, B. M., Bentz, M. C., De Rosa, G., Denney, K. D., Goad, M. R., Kochanek, C. S., Korista, K. T., Kriss, G. A., Pogge, R. W., Bennert, V. N., Brotherton, M., Clubb, K. I., Dalla Bontà, E., Filippenko, A. V., Greene, J. E., Grier, C. J., Vestergaard, M., Zheng, W., Adams, Scott M., Beatty, Thomas G., Bigley, A., Brown, Jacob E., Brown, Jonathan S., Canalizo, G., Comerford, J. M., Coker, Carl T., Corsini, E. M., Croft, S., Croxall, K. V., Deason, A. J., Eracleous, Michael, Fox, O. D., Gates, E. L., Henderson, C. B., Holmbeck, E., Holoien, T. W. -S., Jensen, J. J., Johnson, C. A., Kelly, P. L., Kim, S., King, A., Lau, M. W., Li, Miao, Lochhaas, Cassandra, Ma, Zhiyuan, Manne-Nicholas, E. R., Mauerhan, J. C., Malkan, M. A., McGurk, R., Morelli, L., Mosquera, Ana, Mudd, Dale, Sanchez, F. Muller, Nguyen, M. L., Ochner, P., Ou-Yang, B., Pancoast, A., Penny, Matthew T., Pizzella, A., Poleski, Radosław, Runnoe, Jessie, Scott, B., Schimoia, Jaderson S., Shappee, B. J., Shivvers, I., Simonian, Gregory V., Siviero, A., Somers, Garrett, Stevens, Daniel J., Strauss, M. A., Tayar, Jamie, Tejos, N., Treu, T., Van Saders, J., Vican, L., Villanueva, S., Yuk, H., Zakamska, N. L., Zhu, W., Anderson, M. D., Arévalo, P., Bazhaw, C., Bisogni, S., Borman, G. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Cackett, E. M., Carini, M. T., Crenshaw, D. M., De Lorenzo-Cáceres, A., Dietrich, M., Edelson, R., Efimova, N. V., Ely, J., Evans, P. A., Ferland, G. J., Flatland, K., Gehrels, N., Geier, S., Gelbord, J. M., Grupe, D., Gupta, A., Hall, P. B., Hicks, S., Horenstein, D., Horne, Keith, Hutchison, T., Im, M., Joner, M. D., Jones, J., Kaastra, J., Kaspi, S., Kelly, B. C., Kennea, J. A., Kim, M., Kim, S. C., Klimanov, S. A., Lee, J. C., Leonard, D. C., Lira, P., MacInnis, F., Mathur, S., McHardy, I. M., Montouri, C., Musso, R., Nazarov, S. V., Netzer, H., Norris, R. P., Nousek, J. A., Okhmat, D. N., Papadakis, I., Parks, J. R., Pott, J. -U., Rafter, S. E., Rix, H. -W., Saylor, D. A., Schnülle, K., Sergeev, S. G., Siegel, M., Skielboe, A., Spencer, M., Starkey, D., Sung, H. -I., Teems, K. G., Turner, C. S., Uttley, P., Villforth, C., Weiss, Y., Woo, J. -H., Yan, H., Young, S., & Zu, Y. Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548.  United States.  https://doi.org/10.3847/1538-4357/aa5eb1

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                    Pei, L., Fausnaugh, M. M., Barth, A. J., Peterson, B. M., Bentz, M. C., De Rosa, G., Denney, K. D., Goad, M. R., Kochanek, C. S., Korista, K. T., Kriss, G. A., Pogge, R. W., Bennert, V. N., Brotherton, M., Clubb, K. I., Dalla Bontà, E., Filippenko, A. V., Greene, J. E., Grier, C. J., Vestergaard, M., Zheng, W., Adams, Scott M., Beatty, Thomas G., Bigley, A., Brown, Jacob E., Brown, Jonathan S., Canalizo, G., Comerford, J. M., Coker, Carl T., Corsini, E. M., Croft, S., Croxall, K. V., Deason, A. J., Eracleous, Michael, Fox, O. D., Gates, E. L., Henderson, C. B., Holmbeck, E., Holoien, T. W. -S., Jensen, J. J., Johnson, C. A., Kelly, P. L., Kim, S., King, A., Lau, M. W., Li, Miao, Lochhaas, Cassandra, Ma, Zhiyuan, Manne-Nicholas, E. R., Mauerhan, J. C., Malkan, M. A., McGurk, R., Morelli, L., Mosquera, Ana, Mudd, Dale, Sanchez, F. Muller, Nguyen, M. L., Ochner, P., Ou-Yang, B., Pancoast, A., Penny, Matthew T., Pizzella, A., Poleski, Radosław, Runnoe, Jessie, Scott, B., Schimoia, Jaderson S., Shappee, B. J., Shivvers, I., Simonian, Gregory V., Siviero, A., Somers, Garrett, Stevens, Daniel J., Strauss, M. A., Tayar, Jamie, Tejos, N., Treu, T., Van Saders, J., Vican, L., Villanueva, S., Yuk, H., Zakamska, N. L., Zhu, W., Anderson, M. D., Arévalo, P., Bazhaw, C., Bisogni, S., Borman, G. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Cackett, E. M., Carini, M. T., Crenshaw, D. M., De Lorenzo-Cáceres, A., Dietrich, M., Edelson, R., Efimova, N. V., Ely, J., Evans, P. A., Ferland, G. J., Flatland, K., Gehrels, N., Geier, S., Gelbord, J. M., Grupe, D., Gupta, A., Hall, P. B., Hicks, S., Horenstein, D., Horne, Keith, Hutchison, T., Im, M., Joner, M. D., Jones, J., Kaastra, J., Kaspi, S., Kelly, B. C., Kennea, J. A., Kim, M., Kim, S. C., Klimanov, S. A., Lee, J. C., Leonard, D. C., Lira, P., MacInnis, F., Mathur, S., McHardy, I. M., Montouri, C., Musso, R., Nazarov, S. V., Netzer, H., Norris, R. P., Nousek, J. A., Okhmat, D. N., Papadakis, I., Parks, J. R., Pott, J. -U., Rafter, S. E., Rix, H. -W., Saylor, D. A., Schnülle, K., Sergeev, S. G., Siegel, M., Skielboe, A., Spencer, M., Starkey, D., Sung, H. -I., Teems, K. G., Turner, C. S., Uttley, P., Villforth, C., Weiss, Y., Woo, J. -H., Yan, H., Young, S., and Zu, Y. Fri .  
"Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548".  United States.  https://doi.org/10.3847/1538-4357/aa5eb1.  https://www.osti.gov/servlets/purl/1352630.

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@article{osti_1352630,

  title        = {Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548},

  author       = {Pei, L. and Fausnaugh, M. M. and Barth, A. J. and Peterson, B. M. and Bentz, M. C. and De Rosa, G. and Denney, K. D. and Goad, M. R. and Kochanek, C. S. and Korista, K. T. and Kriss, G. A. and Pogge, R. W. and Bennert, V. N. and Brotherton, M. and Clubb, K. I. and Dalla Bontà, E. and Filippenko, A. V. and Greene, J. E. and Grier, C. J. and Vestergaard, M. and Zheng, W. and Adams, Scott M. and Beatty, Thomas G. and Bigley, A. and Brown, Jacob E. and Brown, Jonathan S. and Canalizo, G. and Comerford, J. M. and Coker, Carl T. and Corsini, E. M. and Croft, S. and Croxall, K. V. and Deason, A. J. and Eracleous, Michael and Fox, O. D. and Gates, E. L. and Henderson, C. B. and Holmbeck, E. and Holoien, T. W. -S. and Jensen, J. J. and Johnson, C. A. and Kelly, P. L. and Kim, S. and King, A. and Lau, M. W. and Li, Miao and Lochhaas, Cassandra and Ma, Zhiyuan and Manne-Nicholas, E. R. and Mauerhan, J. C. and Malkan, M. A. and McGurk, R. and Morelli, L. and Mosquera, Ana and Mudd, Dale and Sanchez, F. Muller and Nguyen, M. L. and Ochner, P. and Ou-Yang, B. and Pancoast, A. and Penny, Matthew T. and Pizzella, A. and Poleski, Radosław and Runnoe, Jessie and Scott, B. and Schimoia, Jaderson S. and Shappee, B. J. and Shivvers, I. and Simonian, Gregory V. and Siviero, A. and Somers, Garrett and Stevens, Daniel J. and Strauss, M. A. and Tayar, Jamie and Tejos, N. and Treu, T. and Van Saders, J. and Vican, L. and Villanueva, S. and Yuk, H. and Zakamska, N. L. and Zhu, W. and Anderson, M. D. and Arévalo, P. and Bazhaw, C. and Bisogni, S. and Borman, G. A. and Bottorff, M. C. and Brandt, W. N. and Breeveld, A. A. and Cackett, E. M. and Carini, M. T. and Crenshaw, D. M. and De Lorenzo-Cáceres, A. and Dietrich, M. and Edelson, R. and Efimova, N. V. and Ely, J. and Evans, P. A. and Ferland, G. J. and Flatland, K. and Gehrels, N. and Geier, S. and Gelbord, J. M. and Grupe, D. and Gupta, A. and Hall, P. B. and Hicks, S. and Horenstein, D. and Horne, Keith and Hutchison, T. and Im, M. and Joner, M. D. and Jones, J. and Kaastra, J. and Kaspi, S. and Kelly, B. C. and Kennea, J. A. and Kim, M. and Kim, S. C. and Klimanov, S. A. and Lee, J. C. and Leonard, D. C. and Lira, P. and MacInnis, F. and Mathur, S. and McHardy, I. M. and Montouri, C. and Musso, R. and Nazarov, S. V. and Netzer, H. and Norris, R. P. and Nousek, J. A. and Okhmat, D. N. and Papadakis, I. and Parks, J. R. and Pott, J. -U. and Rafter, S. E. and Rix, H. -W. and Saylor, D. A. and Schnülle, K. and Sergeev, S. G. and Siegel, M. and Skielboe, A. and Spencer, M. and Starkey, D. and Sung, H. -I. and Teems, K. G. and Turner, C. S. and Uttley, P. and Villforth, C. and Weiss, Y. and Woo, J. -H. and Yan, H. and Young, S. and Zu, Y.},

  abstractNote = {Here, we present the results of an optical spectroscopic monitoring program targeting NGC 5548 as part of a larger multiwavelength reverberation mapping campaign. The campaign spanned 6 months and achieved an almost daily cadence with observations from five ground-based telescopes. The Hβ and He II λ4686 broad emission-line light curves lag that of the 5100 Å optical continuum by ${4.17}_{-0.36}^{+0.36}\,\mathrm{days}$ and ${0.79}_{-0.34}^{+0.35}\,\mathrm{days}$, respectively. The Hβ lag relative to the 1158 Å ultraviolet continuum light curve measured by the Hubble Space Telescope is ~50% longer than that measured against the optical continuum, and the lag difference is consistent with the observed lag between the optical and ultraviolet continua. This suggests that the characteristic radius of the broad-line region is ~50% larger than the value inferred from optical data alone. We also measured velocity-resolved emission-line lags for Hβ and found a complex velocity-lag structure with shorter lags in the line wings, indicative of a broad-line region dominated by Keplerian motion. The responses of both the Hβ and He ii emission lines to the driving continuum changed significantly halfway through the campaign, a phenomenon also observed for C iv, Lyα, He II(+O III]), and Si Iv(+O Iv]) during the same monitoring period. Finally, given the optical luminosity of NGC 5548 during our campaign, the measured Hβ lag is a factor of five shorter than the expected value implied by the R BLR–L AGN relation based on the past behavior of NGC 5548.},

  doi          = {10.3847/1538-4357/aa5eb1},

  journal      = {The Astrophysical Journal (Online)},

  number       = 2,

  volume       = 837,

  place        = {United States},

  year         = {Fri Mar 10 00:00:00 EST 2017},

  month        = {Fri Mar 10 00:00:00 EST 2017}

}

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Black hole mass estimates in quasars - A comparative analysis of high- and low-ionization lines
text, January 2019

Marziani, P.; del Olmo, A.; Martinez-Carballo, M. A.
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Do Reverberation Mapping Analyses Provide an Accurate Picture of the Broad Line Region?
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Mangham, S. W.; Knigge, C.; Williams, P.
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Understanding Broad Mg II Variability in Quasars with Photoionization: Implications for Reverberation Mapping and Changing-Look Quasars
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Raimundo, S. I.; Pancoast, A.; Vestergaard, M.
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Title: Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548

Abstract

Citation Formats

Time development of the emission lines and continuum of NGC 4151 journal, August 1983

Luminosity Indicators in the Spectra of Quasi-Stellar Objects journal, June 1977

The lick agn Monitoring Project 2011: Spectroscopic Campaign and Emission-Line Light Curves journal, April 2015

No evidence for [O iii] variability in Mrk 142 journal, February 2016

BROAD-LINE REVERBERATION IN THE KEPLER -FIELD SEYFERT GALAXY Zw 229-015 journal, April 2011

THE LICK AGN MONITORING PROJECT 2011: Fe II REVERBERATION FROM THE OUTER BROAD-LINE REGION journal, May 2013

NGC 5548 in a Low‐Luminosity State: Implications for the Broad‐Line Region journal, June 2007

The Low-Luminosity end of the Radius-Luminosity Relationship for Active Galactic Nuclei journal, April 2013

THE LICK AGN MONITORING PROJECT: VELOCITY-DELAY MAPS FROM THE MAXIMUM-ENTROPY METHOD FOR Arp 151 journal, August 2010

The AGN Black Hole Mass Database journal, January 2015

THE RADIUS-LUMINOSITY RELATIONSHIP FOR ACTIVE GALACTIC NUCLEI: THE EFFECT OF HOST-GALAXY STARLIGHT ON LUMINOSITY MEASUREMENTS. II. THE FULL SAMPLE OF REVERBERATION-MAPPED AGNs journal, April 2009

The Radius‐Luminosity Relationship for Active Galactic Nuclei: The Effect of Host‐Galaxy Starlight on Luminosity Measurements journal, June 2006

The lick agn Monitoring Project: Broad-Line Region Radii and Black hole Masses from Reverberation Mapping of hβ journal, October 2009

The lick agn Monitoring Project: Reverberation Mapping of Optical Hydrogen and Helium Recombination Lines journal, May 2010

Reverberation mapping of the emission line regions of Seyfert galaxies and quasars journal, April 1982

The emission-line properties of low-redshift quasi-stellar objects journal, May 1992

Stellar population synthesis at the resolution of 2003 journal, October 2003

Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. I - an 8 month campaign of monitoring NGC 5548 with IUE journal, January 1991

Characteristic Ultraviolet/Optical Timescales in Active Galactic Nuclei journal, July 2001

Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XIV. Intensive Optical Spectrophotometric Observations of NGC 7469 journal, June 1998

Systematic effects in measurement of black hole masses by emission-line reverberation of active galactic nuclei: Eddington ratio and inclination journal, August 2006

Evidence for a supermassive black hole in the nucleus of the Seyfert galaxy NGC 5548 journal, August 1990

Variability of accretion flow in the core of the Seyfert galaxy NGC 4151 journal, July 2003

The power density spectrum of NGC 5548 and the nature of its variability journal, February 1999

SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. I. ULTRAVIOLET OBSERVATIONS OF THE SEYFERT 1 GALAXY NGC 5548 WITH THE COSMIC ORIGINS SPECTROGRAPH ON HUBBLE SPACE TELESCOPE journal, June 2015

The Mass of the Black Hole in the Seyfert 1 Galaxy NGC 4593 from Reverberation Mapping journal, December 2006

DIVERSE KINEMATIC SIGNATURES FROM REVERBERATION MAPPING OF THE BROAD-LINE REGION IN AGNs journal, September 2009

Reverberation Mapping Measurements of Black hole Masses in six Local Seyfert Galaxies journal, September 2010

Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. IV - Intensity variations of the optical emission lines of NGC 5548 journal, May 1993

Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XII. Ground‐based Monitoring of 3C 390.3 journal, April 1998

Kinematics of the Broad Emission Line Region in NGC 5548 journal, May 1996

SUPERMASSIVE BLACK HOLES WITH HIGH ACCRETION RATES IN ACTIVE GALACTIC NUCLEI. IV. H β TIME LAGS AND IMPLICATIONS FOR SUPER-EDDINGTON ACCRETION journal, June 2015

SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. II. SWIFT AND HST REVERBERATION MAPPING OF THE ACCRETION DISK OF NGC 5548 journal, June 2015

Magnetic acceleration of broad emission-line clouds in active galactic nuclei journal, January 1992

Space Telescope and Optical Reverberation Mapping Project. iii. Optical Continuum Emission and Broadband time Delays in ngc 5548 journal, April 2016

The importance of atmospheric differential refraction in spectrophotometry journal, August 1982

Direct evidence for gravitational domination of the motion of gas within one light-week of the central object in NGC 4151 and the determination of the mass of the probable black hole journal, February 1988

Line Shifts, Broad-Line Region Inflow, and the Feeding of Active Galactic Nuclei journal, May 2013

The case for inflow of the broad-line region of active galactic nuclei journal, January 2016

Line variations in quasars and Seyfert galaxies journal, June 1986

An Intrinsic Baldwin Effect in the Hβ Broad Emission Line in the Spectrum of NGC 5548 journal, April 2003

The Effect of a Variable Anisotropic Continuum Source upon the Broad Emission Line Profiles and Responses journal, September 1996

Interpreting broad emission-line variations – I. Factors influencing the emission-line response journal, August 2014

Space Telescope and Optical Reverberation Mapping Project. iv. Anomalous Behavior of the Broad Ultraviolet Emission Lines in ngc 5548 journal, June 2016

Is the slope of the intrinsic Baldwin effect constant? journal, July 2004

The broad emission-line region: the confluence of the outer accretion disc with the inner edge of the dusty torus: A bowl-shaped BLR journal, October 2012

An expanded Mbh-σ diagram, and a new calibration of active galactic nuclei masses: The Mbh-σ diagram journal, January 2011

Stellar Velocity Dispersion Measurements in High-Luminosity Quasar Hosts and Implications for the agn Black hole mass Scale journal, July 2013

A REVISED CALIBRATION OF THE VIRIAL MASS ESTIMATOR FOR BLACK HOLES IN ACTIVE GALAXIES BASED ON SINGLE-EPOCH H β SPECTRA journal, August 2015

An optimal extraction algorithm for CCD spectroscopy journal, June 1986

Observational Requirements for High‐Fidelity Reverberation Mapping journal, May 2004

Echo mapping of broad H-beta emission in NGC 5548 journal, January 1991

Reverberation Mapping of High‐Luminosity Quasars: First Results journal, April 2007

The Relationship between Luminosity and Broad‐Line Region Size in Active Galactic Nuclei journal, August 2005

Reverberation Measurements for 17 Quasars and the Size‐Mass‐Luminosity Relations in Active Galactic Nuclei journal, April 2000

Are the Variations in Quasar Optical flux Driven by Thermal Fluctuations? journal, May 2009

On the Scatter in the Radius-Luminosity Relationship for Active Galactic Nuclei journal, February 2015

Simulations of the OzDES AGN reverberation mapping project journal, August 2015

Accretion disk wind in the AGN broad-line region: Spectroscopically resolved line profile variations in Mrk 110 journal, August 2003

Steps toward determination of the size and structure of the broad-line region in active galatic nuclei. 8: an intensive HST, IUE, and ground-based study of NGC 5548 journal, April 1995

Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies journal, August 2013

ANALYSIS OF OPTICAL Fe II EMISSION IN A SAMPLE OF ACTIVE GALACTIC NUCLEUS SPECTRA journal, June 2010

Quantifying Quasar Variability as part of a General Approach to Classifying Continuously Varying Sources journal, December 2009

Ultraviolet variability of NGC 5548 - Dynamics of the continuum production region and geometry of the broad-line region journal, April 1991

On Quasar Masses and Quasar Host Galaxies journal, October 1998

Hubble Space Telescope STIS Ultraviolet Spectral Evidence of Outflow in Extreme Narrow‐Line Seyfert 1 Galaxies. I. Data and Analysis journal, August 2004

A Bayesian Approach to Estimate the size and Structure of the Broad-Line Region in Active Galactic Nuclei Using Reverberation Mapping data journal, November 2013

Reverberation Mapping of the Broad-Line Region in ngc 5548: Evidence for Radiation Pressure? journal, August 2016

Modeling the time Variability of sdss Stripe 82 Quasars as a Damped Random walk journal, September 2010

Swift monitoring of NGC 5548: X-ray reprocessing and short-term UV/optical variability journal, August 2014

Measuring the black hole masses of high-redshift quasars journal, November 2002

Active galactic nuclei at z ∼ 1.5 – II. Black hole mass estimation by means of broad emission lines journal, March 2016

Disk Winds and Disk Emission Lines journal, January 1997

Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the Black Hole Mass–Velocity Dispersion Relationship for Active Galactic Nuclei journal, November 2004

Geometric and Dynamical Models of Reverberation Mapping data journal, March 2011

Modelling reverberation mapping data – II. Dynamical modelling of the Lick AGN Monitoring Project 2008 data set journal, October 2014

RECALIBRATION OF THE VIRIAL FACTOR AND M BH -σ * RELATION FOR LOCAL ACTIVE GALAXIES journal, October 2012

Time development of the emission lines and continuum of NGC 4151
journal, August 1983

Luminosity Indicators in the Spectra of Quasi-Stellar Objects
journal, June 1977

The lick agn Monitoring Project 2011: Spectroscopic Campaign and Emission-Line Light Curves
journal, April 2015

No evidence for [O iii] variability in Mrk 142
journal, February 2016

BROAD-LINE REVERBERATION IN THE KEPLER -FIELD SEYFERT GALAXY Zw 229-015
journal, April 2011

THE LICK AGN MONITORING PROJECT 2011: Fe II REVERBERATION FROM THE OUTER BROAD-LINE REGION
journal, May 2013

NGC 5548 in a Low‐Luminosity State: Implications for the Broad‐Line Region
journal, June 2007

The Low-Luminosity end of the Radius-Luminosity Relationship for Active Galactic Nuclei
journal, April 2013

THE LICK AGN MONITORING PROJECT: VELOCITY-DELAY MAPS FROM THE MAXIMUM-ENTROPY METHOD FOR Arp 151
journal, August 2010

The AGN Black Hole Mass Database
journal, January 2015

THE RADIUS-LUMINOSITY RELATIONSHIP FOR ACTIVE GALACTIC NUCLEI: THE EFFECT OF HOST-GALAXY STARLIGHT ON LUMINOSITY MEASUREMENTS. II. THE FULL SAMPLE OF REVERBERATION-MAPPED AGNs
journal, April 2009

The Radius‐Luminosity Relationship for Active Galactic Nuclei: The Effect of Host‐Galaxy Starlight on Luminosity Measurements
journal, June 2006

The lick agn Monitoring Project: Broad-Line Region Radii and Black hole Masses from Reverberation Mapping of hβ
journal, October 2009

The lick agn Monitoring Project: Reverberation Mapping of Optical Hydrogen and Helium Recombination Lines
journal, May 2010

Reverberation mapping of the emission line regions of Seyfert galaxies and quasars
journal, April 1982

The emission-line properties of low-redshift quasi-stellar objects
journal, May 1992

Stellar population synthesis at the resolution of 2003
journal, October 2003

Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. I - an 8 month campaign of monitoring NGC 5548 with IUE
journal, January 1991

Characteristic Ultraviolet/Optical Timescales in Active Galactic Nuclei
journal, July 2001

Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XIV. Intensive Optical Spectrophotometric Observations of NGC 7469
journal, June 1998

Systematic effects in measurement of black hole masses by emission-line reverberation of active galactic nuclei: Eddington ratio and inclination
journal, August 2006

Evidence for a supermassive black hole in the nucleus of the Seyfert galaxy NGC 5548
journal, August 1990

Variability of accretion flow in the core of the Seyfert galaxy NGC 4151
journal, July 2003

The power density spectrum of NGC 5548 and the nature of its variability
journal, February 1999

SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. I. ULTRAVIOLET OBSERVATIONS OF THE SEYFERT 1 GALAXY NGC 5548 WITH THE COSMIC ORIGINS SPECTROGRAPH ON HUBBLE SPACE TELESCOPE
journal, June 2015

The Mass of the Black Hole in the Seyfert 1 Galaxy NGC 4593 from Reverberation Mapping
journal, December 2006

DIVERSE KINEMATIC SIGNATURES FROM REVERBERATION MAPPING OF THE BROAD-LINE REGION IN AGNs
journal, September 2009

Reverberation Mapping Measurements of Black hole Masses in six Local Seyfert Galaxies
journal, September 2010

Steps toward determination of the size and structure of the broad-line region in active galactic nuclei. IV - Intensity variations of the optical emission lines of NGC 5548
journal, May 1993

Steps toward Determination of the Size and Structure of the Broad‐Line Region in Active Galactic Nuclei. XII. Ground‐based Monitoring of 3C 390.3
journal, April 1998

Kinematics of the Broad Emission Line Region in NGC 5548
journal, May 1996

SUPERMASSIVE BLACK HOLES WITH HIGH ACCRETION RATES IN ACTIVE GALACTIC NUCLEI. IV. H β TIME LAGS AND IMPLICATIONS FOR SUPER-EDDINGTON ACCRETION
journal, June 2015

SPACE TELESCOPE AND OPTICAL REVERBERATION MAPPING PROJECT. II. SWIFT AND HST REVERBERATION MAPPING OF THE ACCRETION DISK OF NGC 5548
journal, June 2015

Magnetic acceleration of broad emission-line clouds in active galactic nuclei
journal, January 1992

Space Telescope and Optical Reverberation Mapping Project. iii. Optical Continuum Emission and Broadband time Delays in ngc 5548
journal, April 2016

The importance of atmospheric differential refraction in spectrophotometry
journal, August 1982

Direct evidence for gravitational domination of the motion of gas within one light-week of the central object in NGC 4151 and the determination of the mass of the probable black hole
journal, February 1988

Line Shifts, Broad-Line Region Inflow, and the Feeding of Active Galactic Nuclei
journal, May 2013

The case for inflow of the broad-line region of active galactic nuclei
journal, January 2016

Line variations in quasars and Seyfert galaxies
journal, June 1986

An Intrinsic Baldwin Effect in the Hβ Broad Emission Line in the Spectrum of NGC 5548
journal, April 2003

The Effect of a Variable Anisotropic Continuum Source upon the Broad Emission Line Profiles and Responses
journal, September 1996

Interpreting broad emission-line variations – I. Factors influencing the emission-line response
journal, August 2014

Space Telescope and Optical Reverberation Mapping Project. iv. Anomalous Behavior of the Broad Ultraviolet Emission Lines in ngc 5548
journal, June 2016

Is the slope of the intrinsic Baldwin effect constant?
journal, July 2004

The broad emission-line region: the confluence of the outer accretion disc with the inner edge of the dusty torus: A bowl-shaped BLR
journal, October 2012

An expanded Mbh-σ diagram, and a new calibration of active galactic nuclei masses: The Mbh-σ diagram
journal, January 2011

Stellar Velocity Dispersion Measurements in High-Luminosity Quasar Hosts and Implications for the agn Black hole mass Scale
journal, July 2013

A REVISED CALIBRATION OF THE VIRIAL MASS ESTIMATOR FOR BLACK HOLES IN ACTIVE GALAXIES BASED ON SINGLE-EPOCH H β SPECTRA
journal, August 2015

An optimal extraction algorithm for CCD spectroscopy
journal, June 1986

Observational Requirements for High‐Fidelity Reverberation Mapping
journal, May 2004

Echo mapping of broad H-beta emission in NGC 5548
journal, January 1991

Reverberation Mapping of High‐Luminosity Quasars: First Results
journal, April 2007

The Relationship between Luminosity and Broad‐Line Region Size in Active Galactic Nuclei
journal, August 2005

Reverberation Measurements for 17 Quasars and the Size‐Mass‐Luminosity Relations in Active Galactic Nuclei
journal, April 2000

Are the Variations in Quasar Optical flux Driven by Thermal Fluctuations?
journal, May 2009

On the Scatter in the Radius-Luminosity Relationship for Active Galactic Nuclei
journal, February 2015

Simulations of the OzDES AGN reverberation mapping project
journal, August 2015

Accretion disk wind in the AGN broad-line region: Spectroscopically resolved line profile variations in Mrk 110
journal, August 2003

Steps toward determination of the size and structure of the broad-line region in active galatic nuclei. 8: an intensive HST, IUE, and ground-based study of NGC 5548
journal, April 1995

Coevolution (Or Not) of Supermassive Black Holes and Host Galaxies
journal, August 2013

ANALYSIS OF OPTICAL Fe II EMISSION IN A SAMPLE OF ACTIVE GALACTIC NUCLEUS SPECTRA
journal, June 2010

Quantifying Quasar Variability as part of a General Approach to Classifying Continuously Varying Sources
journal, December 2009

Ultraviolet variability of NGC 5548 - Dynamics of the continuum production region and geometry of the broad-line region
journal, April 1991

On Quasar Masses and Quasar Host Galaxies
journal, October 1998

Hubble Space Telescope STIS Ultraviolet Spectral Evidence of Outflow in Extreme Narrow‐Line Seyfert 1 Galaxies. I. Data and Analysis
journal, August 2004

A Bayesian Approach to Estimate the size and Structure of the Broad-Line Region in Active Galactic Nuclei Using Reverberation Mapping data
journal, November 2013

Reverberation Mapping of the Broad-Line Region in ngc 5548: Evidence for Radiation Pressure?
journal, August 2016

Modeling the time Variability of sdss Stripe 82 Quasars as a Damped Random walk
journal, September 2010

Swift monitoring of NGC 5548: X-ray reprocessing and short-term UV/optical variability
journal, August 2014

Measuring the black hole masses of high-redshift quasars
journal, November 2002

Active galactic nuclei at z ∼ 1.5 – II. Black hole mass estimation by means of broad emission lines
journal, March 2016

Disk Winds and Disk Emission Lines
journal, January 1997

Supermassive Black Holes in Active Galactic Nuclei. II. Calibration of the Black Hole Mass–Velocity Dispersion Relationship for Active Galactic Nuclei
journal, November 2004

Geometric and Dynamical Models of Reverberation Mapping data
journal, March 2011

Modelling reverberation mapping data – II. Dynamical modelling of the Lick AGN Monitoring Project 2008 data set
journal, October 2014

RECALIBRATION OF THE VIRIAL FACTOR AND M _BH -σ _* RELATION FOR LOCAL ACTIVE GALAXIES
journal, October 2012

The lick agn Monitoring Project: Recalibrating Single-Epoch Virial Black hole mass Estimates
journal, February 2012

Reverberation mapping of active galactic nuclei
journal, March 1993

Measuring the Masses of Supermassive Black Holes
journal, May 2013