Spectrophotometry of a sample of 7C giant radio sources

Details Spectrophotometry of a sample of 7C giant radio sources Spectrophotometry of a sample of 7C giant radio sources

Aug 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996mnras.281.1081c&link_type=abstract

Monthly Notices of the Royal Astronomical Society, Volume 281, Issue 3, pp. 1081-1093.

Astronomy and Astrophysics

Astronomy

32

Galaxies: Active, Intergalactic Medium, Quasars: General, Radio Continuum: Galaxies

Scientific paper

We present spectrophotometric measurements of a sample of 7C classical double radio sources selected to have angular sizes 1.5<=theta<=3 arcmin and flux densities 0.4<=S_151 MHz<=1.0 Jy. We find that these sources lie at redshifts out to at least 1 and have projected linear sizes ~=1 Mpc. These objects provide the first evidence that giant radio sources do not become less common at high redshift, and rule out the possibility that large radio sources are confined by a medium which rapidly increases in density at high redshift. The sample provides additional support for unified schemes of powerful radio galaxies and radio quasars.

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