CaltechAUTHORS
  A Caltech Library Service

Space Telescope and Optical Reverberation Mapping Project. IX. Velocity–Delay Maps for Broad Emission Lines in NGC 5548

Horne, Keith and Rosa, G. De and Peterson, B. M. and Barth, A. J. and Ely, J. and Fausnaugh, M. M. and Kriss, G. A. and Pei, L. and Bentz, M. C. and Cackett, E. M. and Edelson, R. and Eracleous, M. and Goad, M. R. and Grier, C. J. and Kaastra, J. and Kochanek, C. S. and Krongold, Y. and Mathur, S. and Netzer, H. and Proga, D. and Tejos, N. and Vestergaard, M. and Villforth, C. and Adams, S. M. and Anderson, M. D. and Arévalo, P. and Beatty, T G. and Bennert, V. N. and Bigley, A. and Bisogni, S. and Borman, G. A. and Boroson, T. A. and Bottorff, M. C. and Brandt, W. N. and Breeveld, A. A. and Brotherton, M. and Brown, J. E. and Brown, J. S. and Canalizo, G. and Carini, M. T. and Clubb, K. I. and Comerford, J. M. and Corsini, E. M. and Crenshaw, D. M. and Croft, S. and Croxall, K. V. and Bontà, E. Dalla and Deason, A. J. and Dehghanian, M. and De Lorenzo-Cáceres, A. and Denney, K. D. and Dietrich, M. and Done, C. and Efimova, N. V. and Evans, P. A. and Ferland, G. J. and Filippenko, A. V. and Flatland, K. and Fox, O. D. and Gardner, E. and Gates, E. L. and Gehrels, N. and Geier, S. and Gelbord, J. M. and Gonzalez, L. and Gorjian, V. and Greene, J. E. and Grupe, D. and Gupta, A. and Hall, P. B. and Henderson, C. B. and Hicks, S. and Holmbeck, E. and Holoien, T. W.-S. and Hutchison, T. and Im, M. and Jensen, J. J. and Johnson, C. A. and Joner, M. D. and Jones, J. and Kaspi, S. and Kelly, P. L. and Kennea, J. A. and Kim, M. and Kim, S. and Kim, S. C. and King, A. and Klimanov, S. A. and Korista, K. T. and Lau, M. W. and Lee, J. C. and Leonard, D. C. and Li, Miao and Lira, P. and Lochhaas, C. and Ma, Zhiyuan and MacInnis, F. and Malkan, M. A. and Manne-Nicholas, E. R. and Mauerhan, J. C. and McGurk, R. and McHardy, I. M. and Montuori, C. and Morelli, L. and Mosquera, A. and Mudd, D. and Müller–Sánchez, F. and Nazarov, S. V. and Norris, R. P. and Nousek, J. A. and Nguyen, M. L. and Ochner, P. and Okhmat, D. N. and Pancoast, A. and Papadakis, I. and Parks, J. R. and Penny, M. T. and Pizzella, A. and Pogge, R. W. and Poleski, R. and Pott, J.-U. and Rafter, S. E. and Rix, H.-W. and Runnoe, J. and Saylor, D. A. and Schimoia, J. S. and Schnülle, K. and Scott, B. and Sergeev, S. G. and Shappee, B. J. and Shivvers, I. and Siegel, M. and Simonian, G. V. and Siviero, A. and Skielboe, A. and Somers, G. and Spencer, M. and Starkey, D. and Stevens, D. J. and Sung, H.-I. and Tayar, J. and Treu, T. and Turner, C. S. and Uttley, P. and Van Saders, J. and Vican, L. and Villanueva, S. and Weiss, Y. and Woo, J.-H. and Yan, H. and Young, S. and Yuk, H. and Zheng, W. and Zhu, W. and Zu, Y. (2021) Space Telescope and Optical Reverberation Mapping Project. IX. Velocity–Delay Maps for Broad Emission Lines in NGC 5548. Astrophysical Journal, 907 (2). Art. No. 76. ISSN 1538-4357. https://resolver.caltech.edu/CaltechAUTHORS:20210201-130033519

[img] PDF - Published Version
See Usage Policy.

11Mb
[img] PDF - Submitted Version
See Usage Policy.

4Mb

Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20210201-130033519

Abstract

In this contribution, we achieve the primary goal of the active galactic nucleus (AGN) STORM campaign by recovering velocity–delay maps for the prominent broad emission lines (Lyα, C IV, He II, and Hβ) in the spectrum of NGC 5548. These are the most detailed velocity–delay maps ever obtained for an AGN, providing unprecedented information on the geometry, ionization structure, and kinematics of the broad-line region. Virial envelopes enclosing the emission-line responses show that the reverberating gas is bound to the black hole. A stratified ionization structure is evident. The He II response inside 5–10 lt-day has a broad single-peaked velocity profile. The Lyα, C IV, and Hβ responses extend from inside 2 to outside 20 lt-day, with double peaks at ±2500 km s⁻¹ in the 10–20 lt-day delay range. An incomplete ellipse in the velocity–delay plane is evident in Hβ. We interpret the maps in terms of a Keplerian disk with a well-defined outer rim at R = 20 lt-day. The far-side response is weaker than that from the near side. The line-center delay τ = (R/c)(1-sin i) ≈ 5 days gives the inclination i ≈ 45°. The inferred black hole mass is M_(BH) ≈ 7 × 10⁷ M_⊙. In addition to reverberations, the fit residuals confirm that emission-line fluxes are depressed during the "BLR Holiday" identified in previous work. Moreover, a helical "Barber-Pole" pattern, with stripes moving from red to blue across the C IV and Lyα line profiles, suggests azimuthal structure rotating with a 2 yr period that may represent precession or orbital motion of inner-disk structures casting shadows on the emission-line region farther out.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/1538-4357/abce60DOIArticle
https://arxiv.org/abs/2003.01448arXivDiscussion Paper
ORCID:
AuthorORCID
Horne, Keith0000-0003-1728-0304
Rosa, G. De0000-0003-3242-7052
Peterson, B. M.0000-0001-6481-5397
Barth, A. J.0000-0002-3026-0562
Ely, J.0000-0002-4814-5511
Fausnaugh, M. M.0000-0002-9113-7162
Kriss, G. A.0000-0002-2180-8266
Bentz, M. C.0000-0002-2816-5398
Cackett, E. M.0000-0002-8294-9281
Edelson, R.0000-0001-8598-1482
Eracleous, M.0000-0002-3719-940X
Goad, M. R.0000-0002-2908-7360
Grier, C. J.0000-0001-9920-6057
Kaastra, J.0000-0001-5540-2822
Kochanek, C. S.0000-0001-6017-2961
Krongold, Y.0000-0001-6291-5239
Mathur, S.0000-0002-4822-3559
Netzer, H.0000-0002-6766-0260
Proga, D.0000-0002-6336-5125
Tejos, N.0000-0002-1883-4252
Vestergaard, M.0000-0001-9191-9837
Villforth, C.0000-0002-8956-6654
Adams, S. M.0000-0001-5855-5939
Arévalo, P.0000-0001-8503-9809
Beatty, T G.0000-0002-9539-4203
Bennert, V. N.0000-0003-2064-0518
Bisogni, S.0000-0003-3746-4565
Boroson, T. A.0000-0001-9481-1805
Brandt, W. N.0000-0002-0167-2453
Breeveld, A. A.0000-0002-0001-7270
Brotherton, M.0000-0002-1207-0909
Brown, J. S.0000-0002-1885-6419
Canalizo, G.0000-0003-4693-6157
Carini, M. T.0000-0001-8961-2465
Comerford, J. M.0000-0001-8627-4907
Corsini, E. M.0000-0003-3460-5633
Crenshaw, D. M.0000-0002-6465-3639
Croft, S.0000-0003-4823-129X
Croxall, K. V.0000-0002-5258-7224
Bontà, E. Dalla0000-0001-9931-8681
Deason, A. J.0000-0001-6146-2645
Dehghanian, M.0000-0002-0964-7500
De Lorenzo-Cáceres, A.0000-0002-9744-3486
Done, C.0000-0002-1065-7239
Evans, P. A.0000-0002-8465-3353
Ferland, G. J.0000-0003-4503-6333
Filippenko, A. V.0000-0003-3460-0103
Fox, O. D.0000-0003-2238-1572
Gates, E. L.0000-0002-3739-0423
Geier, S.0000-0002-3948-9339
Gelbord, J. M.0000-0001-9092-8619
Gorjian, V.0000-0002-8990-2101
Greene, J. E.0000-0002-5612-3427
Grupe, D.0000-0002-9961-3661
Hall, P. B.0000-0002-1763-5825
Henderson, C. B.0000-0001-8877-9060
Holmbeck, E.0000-0002-5463-6800
Holoien, T. W.-S.0000-0001-9206-3460
Hutchison, T.0000-0001-6251-4988
Im, M.0000-0002-8537-6714
Joner, M. D.0000-0003-0634-8449
Kaspi, S.0000-0002-9925-534X
Kelly, P. L.0000-0003-3142-997X
Kennea, J. A.0000-0002-6745-4790
Kim, S.0000-0001-7052-6647
Kim, S. C.0000-0001-9670-1546
King, A.0000-0001-5352-0550
Korista, K. T.0000-0003-0944-1008
Lau, M. W.0000-0001-9755-9406
Lira, P.0000-0003-1523-9164
Lochhaas, C.0000-0003-1785-8022
Ma, Zhiyuan0000-0003-3270-6844
Malkan, M. A.0000-0001-6919-1237
Mauerhan, J. C.0000-0002-7555-8741
McGurk, R.0000-0003-2064-4105
Morelli, L.0000-0001-6890-3503
Nousek, J. A.0000-0001-7084-4637
Pancoast, A.0000-0003-1065-5046
Penny, M. T.0000-0001-7506-5640
Pizzella, A.0000-0001-9585-417X
Pogge, R. W.0000-0003-1435-3053
Poleski, R.0000-0002-9245-6368
Pott, J.-U.0000-0003-4291-2078
Rix, H.-W.0000-0003-4996-9069
Runnoe, J.0000-0001-8557-2822
Saylor, D. A.0000-0002-0558-1305
Schimoia, J. S.0000-0002-5640-6697
Shappee, B. J.0000-0003-4631-1149
Simonian, G. V.0000-0002-4230-6732
Skielboe, A.0000-0001-9765-3603
Somers, G.0000-0002-9322-0314
Stevens, D. J.0000-0002-5951-8328
Tayar, J.0000-0002-4818-7885
Treu, T.0000-0002-8460-0390
Turner, C. S.0000-0003-4400-5615
Uttley, P.0000-0001-9355-961X
Van Saders, J.0000-0002-4284-8638
Woo, J.-H.0000-0002-8055-5465
Yan, H.0000-0001-7592-7714
Zu, Y.0000-0001-6966-6925
Additional Information:© 2021 The American Astronomical Society. Received 2020 September 20; revised 2020 November 12; accepted 2020 November 25; published 2021 February 1. 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. K.H. acknowledges support from STFC grant ST/R000824/1. G.D.R., B.M.P., M.M.F, C.J.G., and R.W.P. are grateful for the support of the National Science Foundation (NSF) through grant AST-1008882 to The Ohio State University. Research at UC Irvine has been supported by NSF grants AST-1412693 and AST-1907290. M.C. Bentz gratefully acknowledges support through NSF CAREER grant AST-1253702 to Georgia State University. V.N.B. gratefully acknowledges assistance from National Science Foundation (NSF) Research at Undergraduate Institutions (RUI) grant AST-1909297. S.B. is supported by NASA through Chandra award AR7-18013X issued by the Chandra X-ray Observatory Center, operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA under contract NAS8-03060. S.B. was also partially supported by grant HST-AR-13240.009. M.C. Bottorff acknowledges HHMI for support through an undergraduate science education grant to Southwestern University. E.M.C., E.D.B., L.M., and A.P. acknowledge support from Padua University through grants DOR1699945/16, DOR1715817/17, DOR1885254/18, and BIRD164402/16. G.F. and M. Dehghanian acknowledge support from the NSF (AST-1816537), NASA (ATP 17-0141), and STScI (HST-AR-13914, HST-AR-15018), and the Huffaker Scholarship. K.D.D. is supported by an NSF Fellowship awarded under grant AST-1302093. R.E. gratefully acknowledges support from NASA under ADAP award 80NSSC17K0126. P.A.E. acknowledges UKSA support. Support for A.V.F.'s group at UC Berkeley is provided by NSF grant AST-1211916, the TABASGO Foundation, the Christopher R. Redlich Fund, and the Miller Institute for Basic Research in Science. J.M.G. gratefully acknowledges support from NASA under awards NNX15AH49G and 80NSSC17K0126. P.B.H. is supported by NSERC. M.I. acknowledges support from the National Research Foundation of Korea (NRF) grant, No. 2020R1A2C3011091. M.D.J. acknowledges NSF grant AST-0618209. M.K. was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2017R1C1B2002879). SRON is financially supported by NWO, the Netherlands Organization for Scientific Research. C.S.K. is supported by NSF grants AST-1515876 and AST-1814440. Y.K. acknowledges support from DGAPA-PAIIPIT grant IN106518. D.C.L. acknowledges support from NSF grants AST-1009571 and AST-1210311. P.L. acknowledges support from Fondecyt grant 1120328. A.P. is supported by NASA through Einstein Postdoctoral Fellowship grant No. PF5-160141 awarded by the Chandra X-ray Center, which is operated by the Smithsonian Astrophysical Observatory for NASA under contract NAS8-03060. J.S.S. acknowledges CNPq, National Council for Scientific and Technological Development (Brazil) for partial support and The Ohio State University for warm hospitality. T.T. has been supported by NSF grant AST-1412315. T.T. and B.C.K. acknowledge support from the Packard Foundation in the form of a Packard Research Fellowship to T.T. The American Academy in Rome and the Observatory of Monteporzio Catone are thanked by T.T. for kind hospitality. M.V. gratefully acknowledges support from the Independent Research Fund Denmark via grant Nos. DFF 4002-00275 and 8021-00130. J.-H.W. acknowledges support by the National Research Foundation of Korea (NRF) grant funded by the Korean government (No. 2010-0027910). This research has made use of the NASA/IPAC Extragalactic Database (NED), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration. Research at Lick Observatory is partially supported by a generous gift from Google.
Group:Infrared Processing and Analysis Center (IPAC)
Funders:
Funding AgencyGrant Number
NASAGO-13330
NASANAS5-26555
Science and Technology Facilities Council (STFC)ST/R000824/1
NSFAST-1008882
NSFAST-1412693
NSFAST-1907290
NSFAST-1253702
NSFAST-1909297
NASAAR7-18013X
NASANAS8-03060
NASA Hubble FellowshipHST-AR-13240.009
Southwestern UniversityUNSPECIFIED
Padua UniversityDOR1699945/16
Padua UniversityDOR1715817/17
Padua UniversityDOR1885254/18
Padua UniversityBIRD164402/16
NSFAST-1816537
NASAATP 17-0141
NASA Hubble FellowshipHST-AR-13914
NASA Hubble FellowshipHST-AR-15018
Huffaker ScholarshipUNSPECIFIED
NSFAST-1302093
NASA80NSSC17K0126
United Kingdom Space Agency (UKSA)UNSPECIFIED
NSFAST-1211916
TABASGO FoundationUNSPECIFIED
Christopher R. Redlich FundUNSPECIFIED
Miller Institute for Basic Research in ScienceUNSPECIFIED
NASANNX15AH49G
NASA80NSSC17K0126
Natural Sciences and Engineering Research Council of Canada (NSERC)UNSPECIFIED
National Research Foundation of Korea2020R1A2C3011091
NSFAST-0618209
National Research Foundation of Korea2017R1C1B2002879
Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO)UNSPECIFIED
NSFAST-1515876
NSFAST-1814440
Dirección General de Asuntos del Personal Académico (DGAPA)IN106518
NSFAST-1009571
NSFAST-1210311
Fondo Nacional de Desarrollo Científico y Tecnológico (FONDECYT)1120328
NASA Einstein FellowshipPF5-160141
NASANAS8-03060
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)UNSPECIFIED
NSFAST-1412315
David and Lucile Packard FoundationUNSPECIFIED
Danish Council for Independent ResearchDFF 4002-00275
Danish Council for Independent ResearchDFF 8021-00130
National Research Foundation of Korea2010-0027910
NASA/JPL/CaltechUNSPECIFIED
GoogleUNSPECIFIED
Subject Keywords:Active galaxies ; Astrophysical black holes ; Supermassive black holes ; Active galactic nuclei ; Reverberation mapping
Issue or Number:2
Classification Code:Unified Astronomy Thesaurus concepts: Active galaxies (17); Astrophysical black holes (98); Supermassive black holes (1663); Active galactic nuclei (16); Reverberation mapping (2019)
Record Number:CaltechAUTHORS:20210201-130033519
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210201-130033519
Official Citation:Keith Horne et al 2021 ApJ 907 76
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107838
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:01 Feb 2021 21:45
Last Modified:01 Feb 2021 21:45

Repository Staff Only: item control page