The revised GB/GB2 sample of extragalactic radio sources

Free access article

Issue		Astron. Astrophys. Suppl. Ser. Volume 128, Number 1, February_II 1998


Page(s)		153 - 178
DOI		http://dx.doi.org/10.1051/aas:1998132

DOI: 10.1051/aas:1998132

A&A Supplement series, Vol. 128, February II 1998, 153-178

Received April 16; accepted June 25, 1997

The revised GB/GB2 sample of extragalactic radio sources

J. Machalski

Send offprint request: J. Machalski e-mail: machalsk@oa.uj.edu.pl
Obserwatorium Astronomiczne, Uniwersytet Jagiellonski, ul. Orla 171, 30-244 Kraków, Poland

Abstract:

This paper presents the revised sample of 373 extragalactic radio sources brighter than 0.2 Jy at 1.4 GHz. These sources, selected from the finding Green Bank surveys, were mapped at 1465 MHz using the VLA at different configurations. The biases introduced into the original GB and GB2 catalogues by confusion as well as partial resolution by the VLA at A-configuration, are eliminated. In effect, a number of sources have been excluded, and a few other are included into the revised sample. Now the sample is about 99, 97, and 95 per cent complete for sources with , , and , respectively. A compilation of the radio, optical, and X-ray data available for the sample sources are presented in Table 3. New 4.9-GHz VLA images of selected sources are included. A number of statistics describing radio morphological and spectral contents of the sample, radio variability, revised source counts, redshift distributions, etc. are given.

keywords: surveys -- quasars: general -- galaxies:
active -- radio continuum: general; galaxies

SIMBAD Objects
Tables at the CDS

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.