The University of Southampton
×
Filter your search:
University of Southampton Institutional Repository

Space telescope and optical reverberation mapping project. XII. Broad-line region modeling of NGC 5548

Space telescope and optical reverberation mapping project. XII. Broad-line region modeling of NGC 5548
Space telescope and optical reverberation mapping project. XII. Broad-line region modeling of NGC 5548

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 Ly 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 Ly BLRs are much less extended and resemble shell-like structures. There is clear radial structure in the BLR, with C iv and Ly 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 . 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.

1447, 16, 17, 2019, Active galactic nuclei, Active galaxies, Reverberation mapping, Seyfert galaxies
0004-637X
Williams, P. R.
56951d5a-f81e-4425-981b-1d4ebb62d613
Pancoast, A.
40f24ac8-731e-4eb3-83a0-4a39b67dbcb4
Treu, T.
a4e357ff-459b-4869-acfc-761b784cd6f2
Brewer, B. J.
a0821da5-3efd-4406-a6be-c5afafab6957
Peterson, B. M.
ced340e7-3232-477e-bf0a-822a7fe67c92
Barth, A. J.
cf260687-a42f-4afe-9de2-88a8893ded81
Malkan, M. A.
242b58b6-b6c1-467b-977a-5c5ac9376a8a
Rosa, G. De
ba80f646-a47e-4bec-9c9e-807d01d99401
Horne, Keith
67bd3fb6-0bfb-414f-82bb-6620ebcfc5b4
Kriss, G. A.
f55dc1eb-e1d5-4303-a99b-10bf3c87c0db
Arav, N.
035c5755-060f-4def-8543-d116d2aa2a57
Bentz, M. C.
22a8b614-d795-48f7-b3eb-56a0506ee2e5
Cackett, E. M.
d14dd97a-9acb-4cf2-b9a7-17f9791fdee0
Bontà, E. Dalla
3e70d2a1-581b-490c-9bfd-e054507bc891
Dehghanian, M.
01e58487-298c-4035-8155-7437d8adedf3
Done, C.
d05de3dd-71dc-4f37-b2ce-53b5dbff1047
Ferland, G. J.
cad9103b-9023-4bca-b914-e88dcaefe266
Grier, C. J.
86817f5f-dbaf-4745-aee8-820777a70529
Kaastra, J.
17dd5130-38fd-453b-9221-59220210cf0c
Kara, E.
dd2e9a0f-ecbb-4392-aee9-0d5496127da2
Kochanek, C. S.
2de3dac2-9669-4d42-a8c1-2ecff763ff83
Mathur, S.
994501a8-4b9c-4bb7-8565-46be9203f195
Mehdipour, M.
8f99fffb-dbb5-4872-afc0-4f41ff138286
Pogge, R. W.
03112c39-290c-4bfd-b46f-006164cf3233
Proga, D.
77843a2f-9a68-44ca-af84-dcbe438b6a54
Vestergaard, M.
0403f403-5b3b-4cc4-b3f0-87f841afe909
Waters, T.
3edd55f5-d450-450e-a206-ccd954ebed70
Adams, S. M.
20c7b015-3b7e-44f6-a517-38974bf0fb65
Anderson, M. D.
655e3ca9-4b9d-4a9d-b9c2-9f3d68f413e0
Arévalo, P.
2f31eeed-0567-4cfc-9855-17e043b94fa3
Beatty, T. G.
8ff7bde0-e615-4e92-85fc-c9a10feee07d
Bennert, V. N.
1e994949-c935-4b7b-9d92-d377da24a112
Bigley, A.
7c197a0e-6e5e-4079-923d-d35765c95f26
Bisogni, S.
2a1d056a-e160-480a-9b68-e74e98b13e60
Borman, G. A.
01d94617-2ba0-44c7-a62f-5a715c6111b1
Boroson, T. A.
f0033bb1-b1c9-4fde-8c8f-32c811aa620a
Bottorff, M. C.
eb528ce2-0098-4bb1-863b-1714b16d8075
Brandt, W. N.
833e017c-17a6-4351-abd6-c886e7137c2d
Breeveld, A. A.
b8bbf6f0-4a64-43e6-a6d7-128e5d77f127
Brotherton, M.
2298be3b-0a7b-4c9e-bc9b-8e198a138a1b
Brown, J. E.
d862a4d1-f05b-436e-b295-3b6813c073f1
Brown, J. S.
0d2835b8-d4e2-4090-8519-ddf06b02bc5c
Canalizo, G.
00e2f504-2c99-4cb1-88fb-fc78cb41a7ef
Carini, M. T.
925b8c07-a845-4c3e-95f0-de1df555b1d7
Clubb, K. I.
a221ca5c-0b09-49d0-b76c-294bd76a3f0f
Comerford, J. M.
44357185-2f6c-45b7-8283-9349b8cdbfdd
Corsini, E. M.
9de4f255-9669-4b87-89a9-c02569a5b8da
Crenshaw, D. M.
8201f569-9849-41cc-9ea6-9cba03bfc460
Knigge, C.
ac320eec-631a-426e-b2db-717c8bf7857e
Uttley, P.
db770bd7-d97e-43f5-99d4-a585bccd352a
et al.
Williams, P. R.
56951d5a-f81e-4425-981b-1d4ebb62d613
Pancoast, A.
40f24ac8-731e-4eb3-83a0-4a39b67dbcb4
Treu, T.
a4e357ff-459b-4869-acfc-761b784cd6f2
Brewer, B. J.
a0821da5-3efd-4406-a6be-c5afafab6957
Peterson, B. M.
ced340e7-3232-477e-bf0a-822a7fe67c92
Barth, A. J.
cf260687-a42f-4afe-9de2-88a8893ded81
Malkan, M. A.
242b58b6-b6c1-467b-977a-5c5ac9376a8a
Rosa, G. De
ba80f646-a47e-4bec-9c9e-807d01d99401
Horne, Keith
67bd3fb6-0bfb-414f-82bb-6620ebcfc5b4
Kriss, G. A.
f55dc1eb-e1d5-4303-a99b-10bf3c87c0db
Arav, N.
035c5755-060f-4def-8543-d116d2aa2a57
Bentz, M. C.
22a8b614-d795-48f7-b3eb-56a0506ee2e5
Cackett, E. M.
d14dd97a-9acb-4cf2-b9a7-17f9791fdee0
Bontà, E. Dalla
3e70d2a1-581b-490c-9bfd-e054507bc891
Dehghanian, M.
01e58487-298c-4035-8155-7437d8adedf3
Done, C.
d05de3dd-71dc-4f37-b2ce-53b5dbff1047
Ferland, G. J.
cad9103b-9023-4bca-b914-e88dcaefe266
Grier, C. J.
86817f5f-dbaf-4745-aee8-820777a70529
Kaastra, J.
17dd5130-38fd-453b-9221-59220210cf0c
Kara, E.
dd2e9a0f-ecbb-4392-aee9-0d5496127da2
Kochanek, C. S.
2de3dac2-9669-4d42-a8c1-2ecff763ff83
Mathur, S.
994501a8-4b9c-4bb7-8565-46be9203f195
Mehdipour, M.
8f99fffb-dbb5-4872-afc0-4f41ff138286
Pogge, R. W.
03112c39-290c-4bfd-b46f-006164cf3233
Proga, D.
77843a2f-9a68-44ca-af84-dcbe438b6a54
Vestergaard, M.
0403f403-5b3b-4cc4-b3f0-87f841afe909
Waters, T.
3edd55f5-d450-450e-a206-ccd954ebed70
Adams, S. M.
20c7b015-3b7e-44f6-a517-38974bf0fb65
Anderson, M. D.
655e3ca9-4b9d-4a9d-b9c2-9f3d68f413e0
Arévalo, P.
2f31eeed-0567-4cfc-9855-17e043b94fa3
Beatty, T. G.
8ff7bde0-e615-4e92-85fc-c9a10feee07d
Bennert, V. N.
1e994949-c935-4b7b-9d92-d377da24a112
Bigley, A.
7c197a0e-6e5e-4079-923d-d35765c95f26
Bisogni, S.
2a1d056a-e160-480a-9b68-e74e98b13e60
Borman, G. A.
01d94617-2ba0-44c7-a62f-5a715c6111b1
Boroson, T. A.
f0033bb1-b1c9-4fde-8c8f-32c811aa620a
Bottorff, M. C.
eb528ce2-0098-4bb1-863b-1714b16d8075
Brandt, W. N.
833e017c-17a6-4351-abd6-c886e7137c2d
Breeveld, A. A.
b8bbf6f0-4a64-43e6-a6d7-128e5d77f127
Brotherton, M.
2298be3b-0a7b-4c9e-bc9b-8e198a138a1b
Brown, J. E.
d862a4d1-f05b-436e-b295-3b6813c073f1
Brown, J. S.
0d2835b8-d4e2-4090-8519-ddf06b02bc5c
Canalizo, G.
00e2f504-2c99-4cb1-88fb-fc78cb41a7ef
Carini, M. T.
925b8c07-a845-4c3e-95f0-de1df555b1d7
Clubb, K. I.
a221ca5c-0b09-49d0-b76c-294bd76a3f0f
Comerford, J. M.
44357185-2f6c-45b7-8283-9349b8cdbfdd
Corsini, E. M.
9de4f255-9669-4b87-89a9-c02569a5b8da
Crenshaw, D. M.
8201f569-9849-41cc-9ea6-9cba03bfc460
Knigge, C.
ac320eec-631a-426e-b2db-717c8bf7857e
Uttley, P.
db770bd7-d97e-43f5-99d4-a585bccd352a

Williams, P. R. , et al. (2020) Space telescope and optical reverberation mapping project. XII. Broad-line region modeling of NGC 5548. The Astrophysical Journal, 902 (1), [74]. (doi:10.3847/1538-4357/abbad7).

Record type: Article

Abstract

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 Ly 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 Ly BLRs are much less extended and resemble shell-like structures. There is clear radial structure in the BLR, with C iv and Ly 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 . 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.

This record has no associated files available for download.

More information

Accepted/In Press date: 21 September 2020
Published date: 14 October 2020
Keywords: 1447, 16, 17, 2019, Active galactic nuclei, Active galaxies, Reverberation mapping, Seyfert galaxies

Identifiers

Local EPrints ID: 445846
URI: http://eprints.soton.ac.uk/id/eprint/445846
DOI: doi:10.3847/1538-4357/abbad7
ISSN: 0004-637X
PURE UUID: 16ab4564-b1e8-4856-a54d-3490d0b7b63e

Catalogue record

Date deposited: 08 Jan 2021 17:33
Last modified: 16 Mar 2024 10:10

Export record

Altmetrics

Contributors

Author: P. R. Williams
Author: A. Pancoast
Author: T. Treu
Author: B. J. Brewer
Author: B. M. Peterson
Author: A. J. Barth
Author: M. A. Malkan
Author: G. De Rosa
Author: Keith Horne
Author: G. A. Kriss
Author: N. Arav
Author: M. C. Bentz
Author: E. M. Cackett
Author: E. Dalla Bontà
Author: M. Dehghanian
Author: C. Done
Author: G. J. Ferland
Author: C. J. Grier
Author: J. Kaastra
Author: E. Kara
Author: C. S. Kochanek
Author: S. Mathur
Author: M. Mehdipour
Author: R. W. Pogge
Author: D. Proga
Author: M. Vestergaard
Author: T. Waters
Author: S. M. Adams
Author: M. D. Anderson
Author: P. Arévalo
Author: T. G. Beatty
Author: V. N. Bennert
Author: A. Bigley
Author: S. Bisogni
Author: G. A. Borman
Author: T. A. Boroson
Author: M. C. Bottorff
Author: W. N. Brandt
Author: A. A. Breeveld
Author: M. Brotherton
Author: J. E. Brown
Author: J. S. Brown
Author: G. Canalizo
Author: M. T. Carini
Author: K. I. Clubb
Author: J. M. Comerford
Author: E. M. Corsini
Author: D. M. Crenshaw
Author: C. Knigge
Author: P. Uttley
Corporate Author: et al.

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Library staff additional information
Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×