Stability of the Broad-line Region Geometry and Dynamics in Arp 151 over Seven Years

A. Pancoast, A. J. Barth, K. Horne, T. Treu, B. J. Brewer, V. N. Bennert, G. Canalizo, E. L. Gates, W. Li, M. A. Malkan, D. Sand, T. Schmidt, S. Valenti, J. H. Woo, K. I. Clubb, M. C. Cooper, S. M. Crawford, S. F. Hönig, M. D. Joner, M. T. Kandrashoff & 7 others Mariana Lazarova, A. M. Nierenberg, E. Romero-Colmenero, D. Son, E. Tollerud, J. L. Walsh, H. Winkler

Research output: Contribution to journalArticle

5 Citations (Scopus)

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.

Original languageEnglish (US)
Article number108
JournalAstrophysical Journal
Volume856
Issue number2
DOIs
StatePublished - Apr 1 2018

Fingerprint

reverberation
geometry
inference
standard deviation
galaxies
modeling
inflow

Keywords

  • galaxies: active
  • galaxies: individual (Arp 151)
  • galaxies: nuclei
  • methods: statistical

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Pancoast, A., Barth, A. J., Horne, K., Treu, T., Brewer, B. J., Bennert, V. N., ... Winkler, H. (2018). Stability of the Broad-line Region Geometry and Dynamics in Arp 151 over Seven Years. Astrophysical Journal, 856(2), [108]. https://doi.org/10.3847/1538-4357/aab3c6

Stability of the Broad-line Region Geometry and Dynamics in Arp 151 over Seven Years. / Pancoast, A.; Barth, A. J.; Horne, K.; Treu, T.; Brewer, B. J.; Bennert, V. N.; Canalizo, G.; Gates, E. L.; Li, W.; Malkan, M. A.; Sand, D.; Schmidt, T.; Valenti, S.; Woo, J. H.; Clubb, K. I.; Cooper, M. C.; Crawford, S. M.; Hönig, S. F.; Joner, M. D.; Kandrashoff, M. T.; Lazarova, Mariana; Nierenberg, A. M.; Romero-Colmenero, E.; Son, D.; Tollerud, E.; Walsh, J. L.; Winkler, H.

In: Astrophysical Journal, Vol. 856, No. 2, 108, 01.04.2018.

Research output: Contribution to journalArticle

Pancoast, A, Barth, AJ, Horne, K, Treu, T, Brewer, BJ, Bennert, VN, Canalizo, G, Gates, EL, Li, W, Malkan, MA, Sand, D, Schmidt, T, Valenti, S, Woo, JH, Clubb, KI, Cooper, MC, Crawford, SM, Hönig, SF, Joner, MD, Kandrashoff, MT, Lazarova, M, Nierenberg, AM, Romero-Colmenero, E, Son, D, Tollerud, E, Walsh, JL & Winkler, H 2018, 'Stability of the Broad-line Region Geometry and Dynamics in Arp 151 over Seven Years', Astrophysical Journal, vol. 856, no. 2, 108. https://doi.org/10.3847/1538-4357/aab3c6
Pancoast, A. ; Barth, A. J. ; Horne, K. ; Treu, T. ; Brewer, B. J. ; Bennert, V. N. ; Canalizo, G. ; Gates, E. L. ; Li, W. ; Malkan, M. A. ; Sand, D. ; Schmidt, T. ; Valenti, S. ; Woo, J. H. ; Clubb, K. I. ; Cooper, M. C. ; Crawford, S. M. ; Hönig, S. F. ; Joner, M. D. ; Kandrashoff, M. T. ; Lazarova, Mariana ; Nierenberg, A. M. ; Romero-Colmenero, E. ; Son, D. ; Tollerud, E. ; Walsh, J. L. ; Winkler, H. / Stability of the Broad-line Region Geometry and Dynamics in Arp 151 over Seven Years. In: Astrophysical Journal. 2018 ; Vol. 856, No. 2.
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