pith. sign in

arxiv: 0812.2283 · v1 · submitted 2008-12-12 · 🌌 astro-ph

The Radius-Luminosity Relationship for Active Galactic Nuclei: The Effect of Host-Galaxy Starlight on Luminosity Measurements II. The Full Sample of Reverberation-Mapped AGNs

Misty C. Bentz (1) , Bradley M. Peterson (2 , 3) , Hagai Netzer (4) , Richard W. Pogge (2 , Marianne Vestergaard (5) ((1) Dept. of Physics , Astronomy , UC Irvine; (2) Dept. of Astronomy
show 6 more authors
Ohio State; (3) Center for Cosmology AstroParticle Physics Ohio State; (4) School of Physics the Wise Observatory Tel-Aviv University; (5) Dept. of Physics Tufts University)
This is my paper
classification 🌌 astro-ph
keywords agnsrelationshipmeasurementsstarlightconsistentcontributiondeterminegalaxy
0
0 comments X
read the original abstract

We present high-resolution HST images of all 35 AGNs with optical reverberation-mapping results, which we have modeled to create a nucleus-free image of each AGN host galaxy. From the nucleus-free images, we determine the host-galaxy contribution to ground-based spectroscopic luminosity measurements at 5100A. After correcting the luminosities of the AGNs for the contribution from starlight, we re-examine the Hbeta R-L relationship. Our best fit for the relationship gives a powerlaw slope of 0.52 with a range of 0.45 - 0.59 allowed by the uncertainties. This is consistent with our previous findings, and thus still consistent with the naive assumption that all AGNs are simply luminosity-scaled versions of each other. We discuss various consistency checks relating to the galaxy modeling and starlight contributions, as well as possible systematic errors in the current set of reverberation measurements from which we determine the form of the R-L relationship.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.

Forward citations

Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. A hierarchical Bayesian framework for cosmology using Type 1 AGN variability

    astro-ph.CO 2026-06 unverdicted novelty 7.0

    A hierarchical Bayesian framework that uses the empirical anti-correlation between AGN variability amplitude and luminosity to infer cosmological parameters from moderate-baseline light curves via importance reweighting.

  2. Mapping the nuclear environments of extreme coronal line emitting galaxies

    astro-ph.GA 2026-06 unverdicted novelty 6.0

    Multi-epoch spectroscopy of 33 ECLEs shows coronal lines emitted at intermediate radii with log(distance)-log(black hole mass) slopes of 0.63 and 0.69 for [O III] and [Fe VII], consistent with photoionization setting ...

  3. OzSSy1: The Australian Southern Seyfert-1 Spectroscopic Atlas and Catalogue at z < 0.1

    astro-ph.GA 2026-06 unverdicted novelty 5.0

    Presents a public spectroscopic atlas of 887 Southern broad-line AGNs at low redshift, including continuum decompositions and emission-line fits.

  4. Validating the ICCF-Cut Method with Simultaneous Photometric and Spectroscopic H$\alpha$ Reverberation Mapping of NGC 4151 and UGC 3374

    astro-ph.GA 2026-06 unverdicted novelty 4.0

    Simultaneous observations of NGC 4151 and UGC 3374 show that ICCF-Cut photometric Hα light curves and lags match spectroscopic results within uncertainties, with minor discrepancies attributed to He I contamination th...

  5. Unification models of Active Galactic Nuclei

    astro-ph.GA 2026-06 unverdicted

    Overview chapter summarizing traditional orientation-based and radiation-regulated unification models for AGN, including evolutionary aspects and changing-look AGN.