We 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 H
We present the results of a new reverberation mapping campaign for the broad-line active galactic nucleus (AGN) in the edge-on spiral IC 4329A. Monitoring of the optical continuum with
- NSF-PAR ID:
- 10396282
- Publisher / Repository:
- DOI PREFIX: 10.3847
- Date Published:
- Journal Name:
- The Astrophysical Journal
- Volume:
- 944
- Issue:
- 1
- ISSN:
- 0004-637X
- Format(s):
- Medium: X Size: Article No. 29
- Size(s):
- ["Article No. 29"]
- Sponsoring Org:
- National Science Foundation
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Abstract β having the longest delay at days and Heii 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 ofM ⊙. Modeling of the full velocity-resolved response of the Hβ emission line with the phenomenological codeCARAMEL finds a similar mass ofM ⊙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 ofθ i ≈ 33° and with gas motions that are dominated by rotation. The new photoionization-based BLR modeling toolBELMAC finds general agreement with the observations when assuming the best-fitCARAMEL 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. -
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