Diverse kinematic signatures from reverberation mapping of the broad-line region in AGNs

KD Denney, BM Peterson, RW Pogge… - The Astrophysical …, 2009 - iopscience.iop.org
KD Denney, BM Peterson, RW Pogge, A Adair, DW Atlee, K Au-Yong, MC Bentz, JC Bird
The Astrophysical Journal, 2009iopscience.iop.org
ABSTRACT A detailed analysis of the data from a high sampling rate, multi-month
reverberation mapping campaign, undertaken primarily at MDM Observatory with supporting
observations from telescopes around the world, reveals that the Hβ emission region within
the broad-line regions (BLRs) of several nearby active galactic nuclei (AGNs) exhibits a
variety of kinematic behaviors. While the primary goal of this campaign was to obtain either
new or improved Hβ reverberation lag measurements for several relatively low-luminosity …
Abstract
A detailed analysis of the data from a high sampling rate, multi-month reverberation mapping campaign, undertaken primarily at MDM Observatory with supporting observations from telescopes around the world, reveals that the Hβ emission region within the broad-line regions (BLRs) of several nearby active galactic nuclei (AGNs) exhibits a variety of kinematic behaviors. While the primary goal of this campaign was to obtain either new or improved Hβ reverberation lag measurements for several relatively low-luminosity AGNs, we were also able to unambiguously reconstruct velocity-resolved reverberation signals from a subset of our targets. Through high cadence spectroscopic monitoring of the optical continuum and broad Hβ emission-line variations observed in the nuclear regions of NGC 3227, NGC 3516, and NGC 5548, we clearly see evidence for outflowing, infalling, and virialized BLR gas motions, respectively.
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