The M_BH_-{sigma} relation for active galaxies Virtual Observatory Resource

Authors
  1. Bennert V.N.
  2. Treu T.
  3. Auger M.W.
  4. Cosens M.
  5. Park D.
  6. Rosen R.,Harris C.E.
  7. Malkan M.A.
  8. Woo J.-H.
  9. Published by
    CDS
Abstract

We create a baseline of the black hole (BH) mass (M_BH_)-stellar-velocity dispersion ({sigma}) relation for active galaxies, using a sample of 66 local (0.02<z<0.09) Seyfert-1 galaxies, selected from the Sloan Digital Sky Survey (SDSS). Analysis of SDSS images yields AGN luminosities free of host-galaxy contamination, and morphological classification. 51/66 galaxies have spiral morphology. Out of these, 28 bulges have Sersic index n<2 and are considered candidate pseudo-bulges, with eight being definite pseudo-bulges based on multiple classification criteria met. Only 4/66 galaxies show signs of interaction/merging. High signal-to-noise ratio Keck spectra provide the width of the broad H{beta} emission line free of Fe II emission and stellar absorption. AGN luminosity and H{beta} line widths are used to estimate M_BH_. The Keck-based spatially resolved kinematics is used to determine stellar-velocity dispersion within the spheroid effective radius ({sigma}_spat,reff_). We find that {sigma} can vary on average by up to 40% across definitions commonly used in the literature, emphasizing the importance of using self-consistent definitions in comparisons and evolutionary studies. The M_BH_-{sigma} relation for our Seyfert-1 galaxy sample has the same intercept and scatter as that of reverberation-mapped AGNs as well as that of quiescent galaxies, consistent with the hypothesis that our single epoch M_BH_ estimator and sample selection function do not introduce significant biases. Barred galaxies, merging galaxies, and those hosting pseudo-bulges do not represent outliers in the M_BH_-{sigma} relation. This is in contrast with previous work, although no firm conclusion can be drawn on this matter due to the small sample size and limited resolution of the SDSS images.

Keywords
  1. seyfert-galaxies
  2. active-galactic-nuclei
  3. redshifted
  4. galaxy-kinematics
  5. spectroscopy
Bibliographic source Bibcode
2015ApJ...809...20B
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/809/20
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/809/20
Document Object Identifer DOI
doi:10.26093/cds/vizier.18090020

Access

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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/809/20
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https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/809/20/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/809/20/table1?

History

2017-09-27T10:10:07Z
Resource record created
2017-09-27T10:10:07Z
Created
2018-01-08T10:24:05Z
Updated

Contact

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CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
E-Mail
cds-question@unistra.fr