Research articles

search articles

My Pages

Stat

Members: 3645
Articles: 2'504'928
Articles rated: 2609

26 April 2024

» arxiv » astro-ph/0106173

Article overview

Radio sources in the 2dF Galaxy Redshift Survey - II. Local radio luminosity functions for AGN and star-forming galaxies at 1.4 GHz
Elaine M. Sadler ; Carole A. Jackson ; Russell D. Cannon ; Vincent J. McIntyre ; Tara Murphy ; J. Bland-Hawthorn ; T. Bridges ; S. Cole ; M. Colless ; C. Collins ; W. Couch ; G. Dalton ; R. De Propris ; S.P. Driver ; G. Efstathiou ; R.S. Ellis ; C.S. Frenk ; K. Glazebrook ; O. Lahav ; I. Lewis ; S. Lumsden ; S. Maddox ; D. Madgwick ; P. Norberg ; J.A. Peacock ; B.A. Peterson ; W. Sutherland ; K. Taylor ;
Date:	10 Jun 2001
Journal:	Mon.Not.Roy.Astron.Soc. 329 (2002) 227
Subject:	astro-ph
Abstract:	We have cross-matched the 1.4 GHz NRAO VLA Sky Survey (NVSS) with the first 210 fields observed in the 2dF Galaxy Redshift Survey (2dFGRS), covering an effective area of 325 square degrees (about 20% of the final 2dFGRS area). This yields a set of optical spectra of 912 candidate NVSS counterparts, of which we identify 757 as genuine radio IDs - the largest and most homogeneous set of radio-source spectra ever obtained. The 2dFGRS radio sources span the redshift range z=0.005 to 0.438, and are a mixture of active galaxies (60%) and star-forming galaxies (40%). About 25% of the 2dFGRS radio sources are spatially resolved by NVSS, and the sample includes three giant radio galaxies with projected linear size greater than 1 Mpc. The high quality of the 2dF spectra means we can usually distinguish unambiguously between AGN and star-forming galaxies. We have made a new determination of the local radio luminosity function at 1.4 GHz for both active and star-forming galaxies, and derive a local star-formation density of 0.022+/-0.004 solar masses per year per cubic Mpc. (Ho=50 km/s/Mpc).
Source:	arXiv, astro-ph/0106173
Services:	Forum \| Review \| PDF \| Favorites

No review found.

Did you like this article?

This article or document is ...
important:
of broad interest:
readable:
new:
correct:
Global appreciation:

Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.

browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)

ScienXe.org
» my Online CV
» Free

News, job offers and information for researchers and scientists:

home

contact

sitemap