Optical spectroscopy of radio galaxies in the 7C Redshift Survey

Details Optical spectroscopy of radio galaxies in the 7C Redshift Survey Optical spectroscopy of radio galaxies in the 7C Redshift Survey

2002-05-29

arxiv.org/abs/astro-ph/0205507v1

Mon.Not.Roy.Astron.Soc. 335 (2002) 1120-1132

Astronomy and Astrophysics

Astrophysics

14 pages, 6 figures, MNRAS in press

Scientific paper

10.1046/j.1365-8711.2002.05718.x

We present optical spectroscopy of all 49 radio galaxies in the 7C-I and 7C-II regions of the 7C Redshift Survey (7CRS). The low-frequency (151 MHz) selected 7CRS sample contains all sources with flux-densities S_151 > 0.5 Jy in three regions of the sky; 7C-I and 7C-II were chosen to overlap with the 5C6 and 5C7 surveys respectively, and cover a total sky area of 0.013 sr. The sample has been completely identified and spectroscopy of the quasars and broad-lined radio galaxies has been presented in Willott et al. (1998). Only seven of the radio galaxies do not have redshift determinations from the spectroscopy, giving a redshift completeness for the sample of >90%. The median redshift of the 7CRS is 1.1. We present a composite 0.2

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