Free access
Issue
Astron. Astrophys. Suppl. Ser.
Volume 140, Number 3, December II 1999
Page(s) 351 - 353
DOI http://dx.doi.org/10.1051/aas:1999523
DOI: 10.1051/aas:1999523

Astron. Astrophys. Suppl. Ser. 140, 351-353

A survey of UV-excess AGNs in the South Galactic Pole[*]

A sample for the analysis of the QSO clustering

F. La Franca1 - C. Lissandrini2 - S. Cristiani2,3 - L. Miller4 - M.R.S. Hawkins5 - H.T. McGillivray5

Send offprint request: F. La Franca

Correspondence to: lafranca@fis.uniroma3.it


1 - Dipartimento di Fisica, Università degli studi Roma Tre, Via della Vasca Navale 84, I-00146 Roma, Italy
2 - Dipartimento di Astronomia, Università di Padova, Vicolo dell'Oservatorio 5, I-35122, Padova, Italy
3 - Space Telescope-European Coordinating Facility, European Southern Observatory, Karl-Schwarzschild Str. 2, D-85748 Garching b. München, Germany
4 - Department of Physics, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK
5 - Royal Observatory of Edinburgh, Blackford Hill, Edinburgh EH9 3HJ, UK

Received July 8; accepted September 27, 1999

Abstract:

Spectra, position, magnitudes and colors are presented for 485 faint ( $B_{\rm J}<20.5$) emission line objects selected with the ultraviolet-excess (UVX) criterion on a area of 24.6 deg2 in the South Galactic Pole. The objects were selected from the analysis of pixel-to-pixel stacking of COSMOS scans of UKST U J and R plates. The candidates were observed with the Meudon-ESO Fiber Optics System (MEFOS) at the ESO 3.6 m telescope. 429 type 1 AGNs have been identified (373 in the redshift range $0.3<z\leq2.2$). This sample has allowed the measure of a difference on the QSO clustering evolution in comparison with that found for galaxies [(La Franca et al. 1998)]. The region is part of the ESO Imaging Survey (EIS) and of the 2dF QSO redshift survey.

Key words: catalogs -- surveys -- quasars: general

SIMBAD Objects

Copyright The European Southern Observatory (ESO)

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access.

An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.