Velocity dispersions in active galaxies Virtual Observatory Resource

Authors
  1. Harris C.E.
  2. Bennert V.N.
  3. Auger M.W.
  4. Treu T.
  5. Woo J.-H.
  6. Malkan M.A.
  7. Published by
    CDS
Abstract

We derive spatially resolved stellar kinematics for a sample of 84 out of 104 observed local (0.02<z<0.09) galaxies hosting type-1 active galactic nuclei (AGNs), based on long-slit spectra obtained at the 10m W. M. Keck-1 Telescope. In addition to providing central stellar velocity dispersions, we measure major axis rotation curves and velocity dispersion profiles using three separate wavelength regions, including the prominent Ca H&K, MgIb, and CaII NIR stellar features. In this paper, we compare kinematic measurements of stellar velocity dispersion obtained for different apertures, wavelength regions, and signal-to-noise ratios, and provide recipes to cross-calibrate the measurements reducing systematic effects to the level of a few percent. We also provide simple recipes based on readily observable quantities such as global colors and Ca H&K equivalent width that will allow observers of high-redshift AGN hosts to increase the probability of obtaining reliable stellar kinematic measurements from unresolved spectra in the region surrounding the Ca H&K lines.

Keywords
  1. active-galactic-nuclei
  2. galaxy-kinematics
  3. spectroscopy
Bibliographic source Bibcode
2012ApJS..201...29H
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/201/29
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/201/29
Document Object Identifer DOI
doi:10.26093/cds/vizier.22010029

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/201/29
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/201/29
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/201/29
IVOA Table Access TAP
http://tapvizier.cds.unistra.fr/TAPVizieR/tap
Run SQL-like queries with TAP-enabled clients (e.g., TOPCAT).
IVOA Cone Search SCS
For use with a cone search client (e.g., TOPCAT).
http://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/201/29/table1?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/201/29/table1?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/201/29/table1?

History

2012-11-08T15:43:26Z
Resource record created
2012-11-08T15:43:26Z
Created
2017-12-05T05:10:02Z
Updated

Contact

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