Recommended Citation
Published in The Astrophysical Journal, Volume 856, Issue 2 (108), March 1, 2018, pages 1-17.
Please note: Only the first four authors, Cal Poly affiliated authors, and the last author are listed above. For the complete list of authors, please download the article using the download button at the top of the page.
The definitive version is available at https://doi.org/10.3847/1538-4357/aab3c6.
Abstract
The Seyfert 1 galaxy Arp 151 was monitored as part of three reverberation mapping campaigns spanning 2008–2015. We present modeling of these velocity-resolved reverberation mapping data sets using a geometric and dynamical model for the broad-line region (BLR). By modeling each of the three data sets independently, we infer the evolution of the BLR structure in Arp 151 over a total of 7 yr and constrain the systematic uncertainties in nonvarying parameters such as the black hole mass. We find that the BLR geometry of a thick disk viewed close to face-on is stable over this time, although the size of the BLR grows by a factor of ~2. The dynamics of the BLR are dominated by inflow, and the inferred black hole mass is consistent for the three data sets, despite the increase in BLR size. Combining the inference for the three data sets yields a black hole mass and statistical uncertainty of log10(/) = with a standard deviation in individual measurements of 0.13 dex.
Disciplines
Physics
Copyright
Copyright © 2018 American Astronomical Society.
Number of Pages
17
URL: https://digitalcommons.calpoly.edu/phy_fac/579