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        The LOFAR Two-metre Sky Survey IV. First Data Release: Photometric redshifts and rest-frame magnitudes

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        Author
        Duncan, Kenneth J
        Sabater, J.
        Röttgering, H. J. A.
        Jarvis, M. J.
        Smith, D. J. B.
        Best, P. N.
        Callingham, J. R.
        Cochrane, R.
        Croston, J. H.
        Hardcastle, M. J.
        Mingo, B.
        Morabito, L.
        Nisbet, D.
        Prandoni, I.
        Shimwell, T. W.
        Tasse, C.
        White, G. J.
        Williams, W. L.
        Alegre, L.
        Chyży, K. T.
        Gürkan, G.
        Hoeft, M.
        Kondapally, R.
        Mechev, A. P.
        Miley, G. K.
        Schwarz, D. J.
        Weeren, R. J. van
        Attention
        2299/20953
        Abstract
        The LOFAR Two-metre Sky Survey (LoTSS) is a sensitive, high-resolution 120-168 MHz survey of the Northern sky. The LoTSS First Data Release (DR1) presents 424 square degrees of radio continuum observations over the HETDEX Spring Field (10h45m00s $ 0.15$) of 7.9%. We also find that, at a given redshift, there is no strong trend in photo-$z$ quality as a function of radio luminosity. However there are strong trends as a function of redshift for a given radio luminosity, a result of selection effects in the spectroscopic sample and/or intrinsic evolution within the radio source population. Additionally, for the sample of sources in the LoTSS First Data Release with optical counterparts, we present rest-frame optical and mid-infrared magnitudes based on template fits to the consensus photometric (or spectroscopic when available) redshift.
        Publication date
        2018-11-19
        Published in
        Astronomy & Astrophysics
        Published version
        https://doi.org/10.1051/0004-6361/201833562
        License
        Other
        Other links
        http://hdl.handle.net/2299/20953
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