Journal Article

The TexOx-1000 redshift survey of radio sources I: the TOOT00 region

Eleni Vardoulaki, Steve Rawlings, Gary J. Hill, Tom Mauch, Katherine J. Inskip, Julia Riley, Kate Brand, Steve Croft and Chris J. Willott

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 401, issue 3, pages 1709-1759
Published in print January 2010 | ISSN: 0035-8711
Published online January 2010 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-2966.2009.15810.x
The TexOx-1000 redshift survey of radio sources I: the TOOT00 region

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We present optical spectroscopy, near-infrared (mostly K-band) and radio (151-MHz and 1.4-GHz) imaging of the first complete region (TOOT00) of the TexOx-1000 (TOOT) redshift survey of radio sources. The 0.0015-sr (∼5 deg2) TOOT00 region is selected from pointed observations of the Cambridge Low-Frequency Survey Telescope at 151 MHz at a flux density limit of ≃100 mJy, approximately five times fainter than the 7C Redshift Survey (7CRS), and contains 47 radio sources. We have obtained 40 spectroscopic redshifts (∼85 per cent completeness). Adding redshifts estimated for the seven other cases yields a median redshift zmed∼ 1.25. We find a significant population of objects with Fanaroff–Riley type I (FRI) like radio structures at radio luminosities above both the low-redshift FRI/II break and the break in the radio luminosity function. The redshift distribution and subpopulations of TOOT00 are broadly consistent with extrapolations from the 7CRS/6CE/3CRR data sets underlying the SKADS Simulated Skies Semi-Empirical Extragalactic Data base, S3-SEX.

Keywords: galaxies: active; galaxies: evolution; galaxies: formation; galaxies: jets; galaxies: luminosity function, mass function

Journal Article.  17820 words.  Illustrated.

Subjects: Astronomy and Astrophysics

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