Space Telescope and Optical Reverberation Mapping Project. XII. Broad-Line Region Modeling of NGC 5548

Williams, P. R.; Pancoast, A.; Treu, T.; Brewer, B. J.; Peterson, B. M.; Barth, A. J.; Malkan, M. A.; De Rosa, G.; Horne, Keith; Kriss, G. A.; Arav, N.; Bentz, M. C.; Cackett, E. M.; Dalla Bontà, E.; Dehghanian, M.; Done, C.; Ferland, G. J.; Grier, C. J.; Kaastra, J.; Kara, E.; Kochanek, C. S.; Mathur, S.; Mehdipour, M.; Pogge, R. W.; Proga, D.; Vestergaard, M.; Waters, T.; Adams, S. M.; Anderson, M. D.; Arévalo, P.; Beatty, T. G.; Bennert, V. N.; Bigley, A.; Bisogni, S.; Borman, G. A.; Boroson, T. A.; Bottorff, M. C.; Brandt, W. N.; Breeveld, A. A.; Brotherton, M.; Brown, J. E.; Brown, J. S.; Canalizo, G.; Carini, M. T.; Clubb, K. I.; Comerford, J. M.; Corsini, E. M.; Crenshaw, D. M.; Croft, S.; Croxall, K. V.; Deason, A. J.; De Lorenzo-Cáceres, A.; Denney, K. D.; Dietrich, M.; Edelson, R.; Efimova, N. V.; Ely, J.; Evans, P. A.; Fausnaugh, M. M.; Filippenko, A. V.; Flatland, K.; Fox, O. D.; Gardner, E.; Gates, E. L.; Gehrels, N.; Geier, S.; Gelbord, J. M.; Gonzalez, L.; Gorjian, V.; Greene, J. E.; Grupe, D.; Gupta, A.; Hall, P. B.; Henderson, C. B.; Hicks, S.; Holmbeck, E.; Holoien, T. W.-S.; Hutchison, T.; Im, M.; Jensen, J. J.; Johnson, C. A.; Joner, M. D.; Jones, J.; Kaspi, S.; Kelly, P. L.; Kennea, J. A.; Kim, M.; Kim, S.; Kim, S. C.; King, A.; Klimanov, S. A.; Knigge, C.; Krongold, Y.; Lau, M. W.; Lee, J. C.; Leonard, D. C.; Li, Miao; Lira, P.; Lochhaas, C.; Ma, Zhiyuan; MacInnis, F.; Manne-Nicholas, E. R.; Mauerhan, J. C.; McGurk, R.; McHardy, I. M.; Montuori, C.; Morelli, L.; Mosquera, A.; Mudd, D.; Müller-Sánchez, F.; Nazarov, S. V.; Norris, R. P.; Nousek, J. A.; Nguyen, M. L.; Ochner, P.; Okhmat, D. N.; Papadakis, I.; Parks, J. R.; Pei, L.; Penny, M. T.; Pizzella, A.; Poleski, R.; Pott, J.-U.; Rafter, S. E.; Rix, H.-W.; Runnoe, J.; Saylor, D. A.; Schimoia, J. S.; Scott, B.; Sergeev, S. G.; Shappee, B. J.; Shivvers, I.; Siegel, M.; Simonian, G. V.; Siviero, A.; Skielboe, A.; Somers, G.; Spencer, M.; Starkey, D.; Stevens, D. J.; Sung, H.-I.; Tayar, J.; Tejos, N.; Turner, C. S.; Uttley, P.; Van Saders, J.; Vaughan, S. A.; Vican, L.; Villanueva, S.; Villforth, C.; Weiss, Y.; Woo, J.-H.; Yan, H.; Young, S.; Yuk, H.; Zheng, W.; Zhu, W.; Zu, Y.

doi:10.3847/1538-4357/abbad7

Published October 10, 2020 | Version Accepted Version + Published

Journal Article Open

Space Telescope and Optical Reverberation Mapping Project. XII. Broad-Line Region Modeling of NGC 5548

1. University of California, Los Angeles
2. Harvard-Smithsonian Center for Astrophysics
3. University of Auckland
4. The Ohio State University
5. Space Telescope Science Institute
6. University of California, Irvine
7. University of St Andrews
8. Virginia Tech
9. Georgia State University
10. Wayne State University
11. University of Padua
12. Osservatorio Astronomico di Padova
13. University of Kentucky
14. Durham University
15. University of Arizona
16. Netherlands Institute for Space Research
17. Leiden University
18. Massachusetts Institute of Technology
19. University of Copenhagen
20. California Institute of Technology
21. University of Valparaíso
22. California Polytechnic State University
23. University of California, Berkeley
24. Istituto di Astrofisica Spaziale e Fisica Cosmica di Milano
25. Las Cumbres Observatory Global Telescope Network
26. Southwestern University
27. Pennsylvania State University
28. University College London
29. University of Wyoming
30. University of Missouri
31. University of California, Santa Cruz
32. University of California, Riverside
33. Western Kentucky University
34. University of Colorado Boulder
35. Instituto de Astrofísica de Canarias
36. Worcester State University
37. University of Maryland, College Park
38. Pulkovo Observatory
39. University of Leicester
40. San Diego State University
41. University of Reading
42. University of La Laguna
43. Spectral Sciences (United States)
44. Eureka Scientific
45. Jet Propulsion Lab
46. Princeton University
47. Morehead State University
48. York University
49. Infrared Processing and Analysis Center
50. Texas A&M University
51. Seoul National University
52. Brigham Young University
53. Tel Aviv University
54. Technion – Israel Institute of Technology
55. University of Minnesota
56. Korea Astronomy and Space Science Institute
57. Kyungpook National University
58. University of Surrey
59. Korea University of Science and Technology
60. University of Melbourne
61. University of Southampton
62. National Autonomous University of Mexico
63. Columbia University
64. University of Chile
65. University of Massachusetts Amherst
66. Carnegie Observatories
67. University of Insubria
68. University of Atacama
69. United States Naval Academy
70. University of Memphis
71. University of Crete
72. Foundation for Research and Technology Hellas
73. Louisiana State University
74. University of Warsaw
75. Max Planck Institute for Astronomy
76. University of Haifa
77. University of Michigan–Ann Arbor
78. Vanderbilt University
79. Laboratório Interinstitucional de e-Astronomia
80. Universidade Federal de Santa Maria
81. University of Hawaii at Manoa
82. Concord University
83. Pontificial Catholic University of Valparaiso
84. University of Amsterdam
85. University of Bath
86. University of Oklahoma
87. Canadian Institute for Theoretical Astrophysics
88. Shanghai Jiao Tong University

We present geometric and dynamical modeling of the broad line region (BLR) for the multi-wavelength reverberation mapping campaign focused on NGC 5548 in 2014. The data set includes photometric and spectroscopic monitoring in the optical and ultraviolet, covering the Hβ, C iv, and Lyα broad emission lines. We find an extended disk-like Hβ BLR with a mixture of near-circular and outflowing gas trajectories, while the C iv and Lyα BLRs are much less extended and resemble shell-like structures. There is clear radial structure in the BLR, with C iv and Lyα emission arising at smaller radii than the Hβ emission. Using the three lines, we make three independent black hole mass measurements, all of which are consistent. Combining these results gives a joint inference of log₁₀(M_(BH)/M_⊙) = 7.64_(-0.18)^(+0.21). We examine the effect of using the V band instead of the UV continuum light curve on the results and find a size difference that is consistent with the measured UV–optical time lag, but the other structural and kinematic parameters remain unchanged, suggesting that the V band is a suitable proxy for the ionizing continuum when exploring the BLR structure and kinematics. Finally, we compare the Hβ results to similar models of data obtained in 2008 when the active galactic nucleus was at a lower luminosity state. We find that the size of the emitting region increased during this time period, but the geometry and black hole mass remained unchanged, which confirms that the BLR kinematics suitably gauge the gravitational field of the central black hole.

Additional Information

© 2020. The American Astronomical Society. Received 2020 July 3; revised 2020 September 16; accepted 2020 September 21; published 2020 October 14. Support for HST program No. GO-13330 was provided by NASA through a grant from the Space Telescope Science Institute, which is operated by the Association of Universities for Research in Astronomy, Inc., under NASA contract NAS5-26555. Research by P.R.W. and T.T. is supported by NSF grants AST-1412315 and AST-1907208. T.T. and P.R.W. acknowledge support from the Packard Foundation through a Packard Fellowship to T.T. Research by AJB was supported by NSF grant AST-1907290. G.F. and M.D. acknowledge support by NSF (1816537, 1910687), NASA (17-ATP17-0141, 19-ATP19-0188), and STScI (HST-AR-15018, HST-AR-14556). M.I. acknowledges the support form the NRF grant, No. 2020R1A2C3011091, funded by the Korea government (MSIT). M.V. gratefully acknowledges support from the Independent Research Fund Denmark via grant No. DFF 8021-00130. C.S.K. is supported by NSF grants AST-1908952 and AST-1814440. V.N.B. acknowledges assistance from a NASA grant associated with HST proposal GO 15215, a NASA ADAP grant (grant # 80NSSC19K1016) and a National Science Foundation (NSF) Research at Undergraduate Institutions (RUI) grant (AST-1909297). Note that findings and conclusions do not necessarily represent views of the NSF. D.J.S. acknowledges funding support from the Eberly Research Fellowship from The Pennsylvania State University Eberly College of Science. The Center for Exoplanets and Habitable Worlds is supported by the Pennsylvania State University, the Eberly College of Science, and the Pennsylvania Space Grant Consortium. A.V.F.'s group at U.C. Berkeley is grateful for the financial support of NSF grant AST-1211916, the TABASGO Foundation, the Christopher R. Redlich Fund, and the Miller Institute for Basic Research in Science (U.C. Berkeley). Research at Lick Observatory is partially supported by a generous gift from Google.

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Eprint ID: 106056
Resolver ID: CaltechAUTHORS:20201014-111855496

Describes: https://arxiv.org/abs/2010.00594 (URL)

NASA
GO-13330
NASA
NAS5-26555
NSF
AST-1412315
NSF
AST-1907208
David and Lucile Packard Foundation
NSF
AST-1907290
NSF
AST-1816537
NSF
AST-1910687
NASA
17-ATP17-0141
NASA
19-ATP19-0188
NASA Hubble Fellowship
HST-AR-15018
NASA Hubble Fellowship
HST-AR-14556
National Research Foundation of Korea
2020R1A2C3011091
Ministry of Science and ICT (Korea)
Danish Council for Independent Research
DFF 8021-00130
NSF
AST-1908952
NSF
AST-1814440
NASA
GO-15215
NASA
80NSSC19K1016
NSF
AST-1909297
Eberly College of Science
Pennsylvania State University
Pennsylvania Space Grant Consortium
NSF
AST-1211916
TABASGO Foundation
Christopher R. Redlich Fund
Miller Institute for Basic Research in Science
Google

Created: 2020-10-14

Created from EPrint's datestamp field
Updated: 2021-11-16

Created from EPrint's last_modified field

Caltech groups: Infrared Processing and Analysis Center (IPAC)

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Space Telescope and Optical Reverberation Mapping Project. XII. Broad-Line Region Modeling of NGC 5548

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Space Telescope and Optical Reverberation Mapping Project. XII. Broad-Line Region Modeling of NGC 5548

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