Central masses and broad-line region sizes of active galactic nuclei. ii. a homogeneous analysis of a large reverberation-mapping database
Bradley M. Peterson,Laura Ferrarese,Karoline M. Gilbert,Karoline M. Gilbert,Shai Kaspi,Shai Kaspi,M. Malkan,D. Maoz,David Merritt,Hagai Netzer,Christopher A. Onken,Richard W. Pogge,Marianne Vestergaard,Amri Wandel +13 more
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In this article, a reanalysis of broad emission-line reverberation-mapping data was carried out for 35 active galactic nuclei (AGNs) based on a complete and consistent reanalysis, and it was shown that the highest precision measure of the virial product cτΔV2/G is obtained by using the cross-correlation function centroid (cf.Abstract:
We present improved black hole masses for 35 active galactic nuclei (AGNs) based on a complete and consistent reanalysis of broad emission-line reverberation-mapping data From objects with multiple line measurements, we find that the highest precision measure of the virial product cτΔV2/G, where τ is the emission-line lag relative to continuum variations and ΔV is the emission-line width, is obtained by using the cross-correlation function centroid (as opposed to the cross-correlation function peak) for the time delay and the line dispersion (as opposed to FWHM) for the line width and by measuring the line width in the variable part of the spectrum Accurate line-width measurement depends critically on avoiding contaminating features, in particular the narrow components of the emission lines We find that the precision (or random component of the error) of reverberation-based black hole mass measurements is typically around 30%, comparable to the precision attained in measurement of black hole masses in quiescent galaxies by gas or stellar dynamical methods Based on results presented in a companion paper by Onken et al, we provide a zero-point calibration for the reverberation-based black hole mass scale by using the relationship between black hole mass and host-galaxy bulge velocity dispersion The scatter around this relationship implies that the typical systematic uncertainties in reverberation-based black hole masses are smaller than a factor of 3 We present a preliminary version of a mass-luminosity relationship that is much better defined than any previous attempt Scatter about the mass-luminosity relationship for these AGNs appears to be real and could be correlated with either Eddington ratio or object inclinationread more
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Journal ArticleDOI
The M-σ and M-L Relations in Galactic Bulges, and Determinations of Their Intrinsic Scatter
Kayhan Gültekin,Douglas O. Richstone,Karl Gebhardt,Tod R. Lauer,Scott Tremaine,Monique Aller,Ralf Bender,Alan Dressler,Sandra M. Faber,Alexei V. Filippenko,Richard F. Green,Luis C. Ho,John Kormendy,John Magorrian,Jason Pinkney,Christos Siopis +15 more
TL;DR: In this article, improved versions of the relations between supermassive black hole mass (M BH) and host-galaxy bulge velocity dispersion (σ) and luminosity (L; the M-σ and M-L relations), based on 49 M BH measurements and 19 upper limits, were derived.
Journal ArticleDOI
The M-sigma and M-L Relations in Galactic Bulges and Determinations of their Intrinsic Scatter
Kayhan Gültekin,Douglas O. Richstone,Karl Gebhardt,Tod R. Lauer,Scott Tremaine,Monique Aller,Ralf Bender,Alan Dressler,S. M. Faber,Alexei V. Filippenko,Richard F. Green,Luis C. Ho,John Kormendy,John Magorrian,Jason Pinkney,Christos Siopis +15 more
TL;DR: This article derived improved versions of the relations between supermassive black hole mass and host-galaxy bulge velocity dispersion (sigma) and luminosity (L) (the M-sigma and M-L relations), based on 49 M_BH measurements and 19 upper limits.
Journal ArticleDOI
The man behind the curtain: x-rays drive the uv through nir variability in the 2013 active galactic nucleus outburst in ngc 2617
Benjamin J. Shappee,J. L. Prieto,Dirk Grupe,Christopher S. Kochanek,Krzysztof Z. Stanek,G. De Rosa,Smita Mathur,Ying Zu,Bradley M. Peterson,Richard W. Pogge,Stefanie Komossa,Myungshin Im,Jacob Jencson,T W-S Holoien,U. Basu,John F. Beacom,D. M. Szczygiel,Joseph Brimacombe,Scott M. Adams,Abdo Campillay,Changsu Choi,Carlos Contreras,M. Dietrich,M. Dubberley,M. Elphick,S. Foale,Margherita Giustini,C. Gonzalez,E. Hawkins,D. A. Howell,D. A. Howell,Eric Hsiao,Michael Koss,Karen M. Leighly,Nidia Morrell,D. Mudd,D. Mullins,Jenna M. Nugent,J. Parrent,Mark M. Phillips,G. Pojmanski,Wayne Rosing,R. Ross,David J. Sand,Donald M. Terndrup,Stefano Valenti,Stefano Valenti,Z. Walker,Yosep Yoon +48 more
TL;DR: In this article, the authors reported that NGC 2617 went through a dramatic outburst, during which its X-ray flux increased by over an order of magnitude followed by an increase of its optical/ultraviolet (UV) continuum flux.
Journal ArticleDOI
Determining Central Black Hole Masses in Distant Active Galaxies and Quasars. II. Improved Optical and UV Scaling Relationships
TL;DR: In this article, the mass scaling relationship between line widths and luminosity is used for estimating the central black hole mass in nearby AGNs and distant luminous quasars alike using either optical or UV single-epoch spectroscopy.
Journal ArticleDOI
The Man Behind the Curtain: X-rays Drive the UV through NIR Variability in the 2013 AGN Outburst in NGC 2617
Benjamin J. Shappee,J. L. Prieto,Dirk Grupe,Christopher S. Kochanek,K. Z. Stanek,G. De Rosa,S. Mathur,Ying Zu,Bradley M. Peterson,R. W. Pogge,S. Komossa,Myungshin Im,J. E. Jencson,T W-S Holoien,U. Basu,John F. Beacom,D. M. Szczygiel,Joseph Brimacombe,Scott M. Adams,A. Campillay,Changsu Choi,C. Contreras,M. Dietrich,M. Dubberley,M. Elphick,S. Foale,Margherita Giustini,C. Gonzalez,E. Hawkins,D. A. Howell,Eric Hsiao,Michael Koss,Karen M. Leighly,N. I. Morrell,D. Mudd,D. Mullins,Jenna M. Nugent,J. T. Parrent,M. M. Phillips,G. Pojmanski,Wayne Rosing,R. Ross,David J. Sand,Donald M. Terndrup,S. Valenti,Z. Walker,Yosep Yoon +46 more
TL;DR: In this article, the authors reported that NGC 2617 went through a dramatic outburst, during which its X-ray flux increased by over an order of magnitude followed by an increase of its optical/ultraviolet (UV) continuum flux.
References
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