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26 April 2024 |
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A Sample of Ultra Steep Spectrum Sources Selected from the Westerbork In the Southern Hemisphere (WISH) survey | | Carlos De Breuck
; Yuan Tang
; A.G. de Bruyn
; Huub Rottgering
; Wil van Breugel
; | | Date: |
2 Aug 2002 | | Journal: | Astron.Astrophys. 394 (2002) 59-70 | | Subject: | astro-ph | | Affiliation: | IAP), Yuan Tang (ASTRON), A.G. de Bruyn (ASTRON/Groningen), Huub Rottgering (Leiden) and Wil van Breugel (IGPP/LLNL | | Abstract: | The 352 MHz Westerbork In the Southern Hemisphere (WISH) survey is the southern extension of the WENSS, covering 1.60 sr between -9 < DEC < -26 to a limiting flux density of ~18 mJy (5sigma). Due to the very low elevation of the observations, the survey has a much lower resolution in declination than in right ascension (54" x 54"cosec(DEC)). A correlation with the 1.4 GHz NVSS shows that the positional accuracy is less constrained in declination than in right ascension, but there is no significant systematic error. We present a source list containing 73570 sources. We correlate this WISH catalogue with the NVSS to construct a sample of faint Ultra Steep Spectrum (USS) sources, which is accessible for follow-up studies with large optical telescopes in the southern hemisphere. This sample is aimed at increasing the number of known high redshift radio galaxies to allow detailed follow-up studies of these massive galaxies and their environments in the early Universe. | | Source: | arXiv, astro-ph/0208054 | | Services: | Forum | Review | PDF | Favorites | |
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