A complete sample of broad-line AGN from SDSS-DR7 Virtual Observatory Resource

Authors
  1. Liu H.-Y.
  2. Liu W.-J.
  3. Dong X.-B.
  4. Zhou H.
  5. Wang T.
  6. Lu H.
  7. Yuan W.
  8. Published by
    CDS
Abstract

A new, complete sample of 14584 broad-line active galactic nuclei (AGNs) at z<0.35 is presented, which are uncovered homogeneously from the complete database of galaxies and quasars observed spectroscopically in the Sloan Digital Sky Survey Seventh Data Release. The stellar continuum is properly removed for each spectrum with significant host absorption line features, and careful analyses of the emission line spectra, particularly in the H{alpha} and H{beta} wavebands, are carried out. The broad Balmer emission line, particularly H{alpha}, is used to indicate the presence of an AGN. The broad H{alpha} lines have luminosities in a range of 10^38.5^-10^44.3^erg/s, and line widths (FWHMs) of 500-34000km/s. The virial black hole masses, estimated from the broad-line measurements, span a range of 10^5.1^-10^10.3^M_{sun}_, and the Eddington ratios vary from -3.3 to 1.3 in logarithmic scale. Other quantities such as multiwavelength photometric properties and flags denoting peculiar line profiles are also included in this catalog. We describe the construction of this catalog and briefly discuss its properties. The catalog is publicly available online. This homogeneously selected AGN catalog, along with the accurately measured spectral parameters, provides the most updated, largest AGN sample data, which will enable further comprehensive investigations of the properties of the AGN population in the low-redshift universe.

Keywords
  1. Active galactic nuclei
  2. Optical astronomy
  3. Spectroscopy
  4. Redshifted
  5. Line intensities
  6. Sloan photometry
  7. Infrared photometry
  8. Ultraviolet astronomy
  9. Radio sources
  10. X-ray sources
  11. Surveys
Bibliographic source Bibcode
2019ApJS..243...21L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/243/21
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJS/243/21
Document Object Identifer DOI
doi:10.26093/cds/vizier.22430021

Access

Web browser access HTML
http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/243/21
https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/243/21
http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/243/21
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/243/21/catalog?
https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/243/21/catalog?
http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/243/21/catalog?

History

2020-02-10T08:29:58Z
Resource record created
2020-02-10T08:29:58Z
Created
2020-08-20T08:24:47Z
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