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    The XXL Survey: XXIX. GMRT 610 MHz continuum observations

    275033.pdf (2.471Mb)
    Access Status
    Open access
    Authors
    Smolcic, V.
    Intema, Hubertus
    Šlaus, B.
    Raychaudhury, S.
    Novak, M.
    Horellou, C.
    Chiappetti, L.
    Delhaize, J.
    Birkinshaw, M.
    Bondi, M.
    Bremer, M.
    Ciliegi, P.
    Ferrari, C.
    Kolokythas, K.
    Lidman, C.
    McGee, S.
    Norris, R.
    Pierre, M.
    Röttgering, H.
    Tasse, C.
    Williams, W.
    Date
    2018
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Smolcic, V. and Intema, H. and Šlaus, B. and Raychaudhury, S. and Novak, M. and Horellou, C. and Chiappetti, L. et al. 2018. The XXL Survey: XXIX. GMRT 610 MHz continuum observations. Astronomy and Astrophysics. 620: Article ID A14.
    Source Title
    Astronomy and Astrophysics
    DOI
    10.1051/0004-6361/201732336
    ISSN
    0004-6361
    Remarks

    Reproduced with permission from Astronomy & Astrophysics, © ESO

    URI
    http://hdl.handle.net/20.500.11937/73766
    Collection
    • Curtin Research Publications
    Abstract

    We present the 25 square-degree GMRT-XXL-N 610 MHz radio continuum survey, conducted at 50 cm wavelength with the Giant Metrewave Radio Telescope (GMRT) towards the XXL Northern field (XXL-N). We combined previously published observations of the XMM-Large Scale Structure (XMM-LSS) field, located in the central part of XXL-N, with newly conducted observations towards the remaining XXL-N area, and imaged the combined data-set using the Source Peeling and Atmospheric Modeling (SPAM) pipeline. The final mosaic encompasses a total area of 30:4 square degrees, with rms <150 µJy beam-1 over 60% of the area. The rms achieved in the inner 9.6 square degree area, enclosing the XMM-LSS field, is about 200 µJy beam-1, while that over the outer 12.66 square degree area (which excludes the noisy edges) is about 45 µJy beam-1. The resolution of the final mosaic is 6.5 arcsec. We present a catalogue of 5434 sources detected at =7 × rms. We verify, and correct the reliability of, the catalog in terms of astrometry, flux, and false detection rate. Making use of the (to date) deepest radio continuum survey over a relatively large (2 square degree) field, complete at the flux levels probed by the GMRT-XXL-N survey, we also assess the survey's incompleteness as a function of flux density. The radio continuum sensitivity reached over a large field with a wealth of multi-wavelength data available makes the GMRTXXL- N 610 MHz survey an important asset for studying the physical properties, environments and cosmic evolution of radio sources, in particular radio-selected active galactic nuclei (AGN).

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