The Hamburg/ESO survey for bright QSOs. II. Virtual Observatory Resource

Authors
  1. Reimers D.
  2. Koehler T.
  3. Wisotzki L.
  4. Published by
    CDS
Abstract

We report about the first phase of a wide-angle survey for bright QSOs (12.5<~B<~17.5) in the southern hemisphere, based on objective prism plates taken with the ESO Schmidt telescope over an effective area of ~1000 sq.deg. After digitisation, the extracted spectra were searched for quasar candidates in a largely automated two-stage procedure. Several selection criteria, such as UV excess or presence of emission lines, were applied simultaneously to the databases. Thanks to the high spectral resolution of the spectra, the stellar contamination in the candidate sets could be efficiently kept low. Follow-up spectroscopy has yielded 160 newly discovered QSOs and Seyfert 1 galaxies, plus a variety of other interesting galactic and extragalactic objects. Although the present QSO sample is not statistically "complete" insofar as it has no well-defined flux limit, there is no evidence for strong redshift-dependent selection biases. The extension of the survey over an area of 5000sq.deg. and the construction of flux-limited subsamples are under way.

Keywords
  1. quasars
  2. seyfert-galaxies
  3. redshifted
Bibliographic source Bibcode
1996A&AS..115..235R
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/115/235
IVOA Identifier IVOID
ivo://CDS.VizieR/J/A+AS/115/235

Access

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https://vizier.iucaa.in/viz-bin/conesearch/J/A+AS/115/235/table3?
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History

1999-02-27T13:33:32Z
Resource record created
1999-02-27T12:33:41Z
Updated
1999-02-27T13:33:32Z
Created

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