Modeling reverberation mapping data II: dynamical modeling of the Lick AGN Monitoring Project 2008 dataset

摘要

We present dynamical modeling of the broad line region (BLR) for a sample offive Seyfert 1 galaxies using reverberation mapping data taken by the Lick AGNMonitoring Project in 2008. By modeling the AGN continuum light curve andH$\beta$ line profiles directly we are able to constrain the geometry andkinematics of the BLR and make a measurement of the black hole mass that doesnot depend upon the virial factor, $f$, needed in traditional reverberationmapping analysis. We find that the geometry of the BLR is generally a thickdisk viewed close to face-on. While the H$\beta$ emission is found to comepreferentially from the far side of the BLR, the mean size of the BLR isconsistent with the lags measured with cross-correlation analysis. The BLRkinematics are found to be consistent with either inflowing motions orelliptical orbits, often with some combination of the two. We measure blackhole masses of $\log_{10}(M_{\rm\,BH}/M_\odot)=6.62^{+0.10}_{-0.13}$ for Arp151, $7.42^{+0.26}_{-0.27}$ for Mrk 1310, $7.51^{+0.23}_{-0.14}$ for NGC 5548,$6.42^{+0.24}_{-0.18}$ for NGC 6814, and $6.99^{+0.32}_{-0.25}$ for SBS1116+583A. The $f$ factors measured individually for each AGN are found tocorrelate with inclination angle, although not with $M_{\rm\,BH}$, $L_{5100}$,or FWHM/$\sigma$ of the emission line profile.