Faint CSS radio sources at 74 MHz (Tschager+, 2003)

Details Faint CSS radio sources at 74 MHz (Tschager+, 2003) Faint CSS radio sources at 74 MHz (Tschager+, 2003)

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ycat..34020171t&link_type=abstract

VizieR On-line Data Catalog: J/A+A/402/171. Originally published in: 2003A&A...402..171T

Computer Science

Radio Sources

Scientific paper

Using the WENSS (), NVSS () and FIRST () radio surveys, we have constructed a new sample of faint CSS sources to fill in an unexplored segment of the peak-flux-density - peak-frequency parameter space. Unresolved radio sources located in the area 08h250mJy were selected from WENSS at 325MHz, and their positions were correlated with the NVSS catalogue at 1.4GHz. Sources with an optically thin radio spectrum of {alpha}<0.5 (S{prop.to}{nu}^{alpha}) were subsequently selected. We then correlated this sample of steep-spectrum radio sources with the 1.4GHz FIRST catalogue to select only those sources with a deconvolved size of <2". This selection on spectral index and angular extension is the same as used by Fanti et al. (1990A&A...231..333F) for selecting the reference sample of bright CSS sources mainly from the 3CR catalogue. From a total of 402 objects found, we selected a working sample composed of 99 sources, mostly located in the region of the sky limited by 08h

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