Forskning ved Københavns Universitet - Københavns Universitet


Reverberation Mapping Results from MDM Observatory: Co-Evolution of Central Black Holes and Galaxies

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningfagfællebedømt

  • Kelly D. Denney
  • B. M. Peterson
  • R. W. Pogge
  • M. C. Bentz
  • C. M. Gaskell
  • T. Minezaki
  • C. A. Onken
  • S. G. Sergeev
  • Vestergaard, Marianne
Reverberation mapping takes advantage of the presence of a time delay or lag, t, between continuum and emission line flux variations observed through spectroscopic monitoring campaigns to infer the radius of the broad-line region (BLR) and, subsequently, the central black hole mass in type 1 AGNs. We present results from a multi-month reverberation mapping campaign undertaken primarily at MDM Observatory with supporting observations from around the world. We measure BLR radii and black hole masses for six objects. The primary goal of this campaign was to obtain either new or improved Hß reverberation lag measurements for several relatively low-luminosity AGNs. Using cross correlation techniques to measure the time delay between the mean optical continuum flux density around 5100 Å and the integrated Hß flux, we determine the Hß lags and black hole mass measurements listed in columns 2 and 3 of Table 1, respectively. Column 4 tells if this measurement is new, an improvement meant to replace a previous, less reliable measurement, or simply an additional measurement not used to replace a previous value. The complete results from this study are currently being prepared for publication. A subsequent velocity-resolved analysis of the Hß response shows that three of the six primary targets demonstrate kinematic signatures (column 5) of infall, outflow, and non-radial virialized motions (see Denney et al. 2009).
TidsskriftInternational Astronomical Union. Proceedings of Symposia
Sider (fra-til)201-201
StatusUdgivet - 1 maj 2010

ID: 44200936