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arXiv · 0906.4956

The FIRST radio survey: The K-z diagram of FIRST radio sources identified in the Bo\"{o}tes and Cetus fields

Khadija EL Bouchefry
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Abstract

This paper presents the Hubble diagram (K-z relation) for FIRST (Faint Images of the Radio Sky at 20 cm) radio sources identified in the Bootes and Cetus fields. The correlation between the K magnitude of the FIRST-NDWFS sample and the photometric redshifts found to be linear. The dispersion about the best fit line is given by 1.53 for the whole sample and 0.75 at z>1. The paper also presents a composite K-z diagram of FIRST radio sources and low-frequency selected radio samples with progressively fainter flux-density limits (3CRR, 6C, 7CRS and the EIS-NVSS sample). The majority of FIRST radio sources lie fainter than the no evolution curve (3L* galaxies) probably highlighting the fact that the galaxy luminosity is correlated with the radio power.

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Khadija EL Bouchefry. 2009-06-26. The FIRST radio survey: The K-z diagram of FIRST radio sources identified in the Bo\"{o}tes and Cetus fields. https://doi.org/10.1002/asna.200811235

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