Velocity-resolved Reverberation Mapping of NGC 3227

dc.contributor.authorBentz, Misty C
dc.contributor.authorMarkham, Madison
dc.contributor.authorRosborough, Sara
dc.contributor.authorOnken, Christopher
dc.contributor.authorStreet, Rachel
dc.contributor.authorValluri, Monica
dc.contributor.authorTreu, Tommaso
dc.date.accessioned2024-08-28T04:04:05Z
dc.date.available2024-08-28T04:04:05Z
dc.date.issued2023
dc.date.updated2024-04-28T08:15:46Z
dc.description.abstractWe describe the results of a new reverberation mapping program focused on the nearby Seyfert galaxy NGC 3227. Photometric and spectroscopic monitoring was carried out from 2022 December to 2023 June with the Las Cumbres Observatory network of telescopes. We detected time delays in several optical broad emission lines, with Hβ having the longest delay at days and He ii having the shortest delay with days. We also detect velocity-resolved behavior of the Hβ emission line, with different line-of-sight velocities corresponding to different observed time delays. Combining the integrated Hβ time delay with the width of the variable component of the emission line and a standard scale factor suggests a black hole mass of M⊙. Modeling of the full velocity-resolved response of the Hβ emission line with the phenomenological code CARAMEL finds a similar mass of M⊙ and suggests that the Hβ-emitting broad-line region (BLR) may be represented by a biconical or flared disk structure that we are viewing at an inclination angle of θi ≈ 33° and with gas motions that are dominated by rotation. The new photoionization-based BLR modeling tool BELMAC finds general agreement with the observations when assuming the best-fit CARAMEL results; however, BELMAC prefers a thick-disk geometry and kinematics that are equally composed of rotation and inflow. Both codes infer a radially extended and flattened BLR that is not outflowing.
dc.description.sponsorshipWe thank the anonymous referee for helpful suggestions that improved the presentation of this work. We thank Andy Robinson for useful discussions. M.C.B. gratefully acknowledges support from the NSF through grant AST-2009230. M.M. was supported by National Science Foundation grant No. 2050829 to Georgia State University under the Research Experiences for Undergraduates program. S.R. was supported by NSF grant AST-2009508. . M.V. was supported by the NSF through AST-2009122. T.T. gratefully acknowledges support by NSF through grant AST-1907208.
dc.format.mimetypeapplication/pdfen_AU
dc.identifier.issn15384357
dc.identifier.urihttps://hdl.handle.net/1885/733716023
dc.language.isoen_AUen_AU
dc.provenanceOriginal content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
dc.publisherInstitute of Physics Publishing
dc.relationhttp://purl.org/au-research/grants/arc/DP190100252
dc.sourceThe Astrophysical Journal
dc.titleVelocity-resolved Reverberation Mapping of NGC 3227
dc.typeJournal article
local.bibliographicCitation.issue1
local.contributor.affiliationBentz, Misty C, Georgia State University
local.contributor.affiliationMarkham, Madison, Colgate University
local.contributor.affiliationRosborough, Sara, Rochester Institute of Technology
local.contributor.affiliationOnken, Christopher, College of Science, ANU
local.contributor.affiliationStreet, Rachel, LCOGT
local.contributor.affiliationValluri, Monica, University of Michigan
local.contributor.affiliationTreu, Tommaso, University of California
local.contributor.authoremailu4606113@anu.edu.au
local.contributor.authoruidOnken, Christopher, u4606113
local.description.notesImported from ARIES
local.identifier.absfor510104 - Galactic astronomy
local.identifier.ariespublicationa383154xPUB45946
local.identifier.citationvolume959
local.identifier.doi10.3847/1538-4357/ad08b8
local.identifier.scopusID2-s2.0-85180122008
local.identifier.uidSubmittedBya383154
local.publisher.urlhttps://iopscience.iop.org/
local.type.statusPublished Version
publicationvolume.volumeNumber959

Downloads

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
Bentz_2023_ApJ_959_25.pdf
Size:
1.12 MB
Format:
Adobe Portable Document Format