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LOFAR 150-MHz observations of the Bootes field: catalogue and source counts

Williams, W. L. (author)
Universiteit Leiden (UL),Leiden University (UL),Netherlands Institute for Radio Astronomy (ASTRON),University of Hertfordshire
van Weeren, R. J. (author)
Harvard-Smithsonian Center for Astrophysics
Rottgering, H. (author)
Universiteit Leiden (UL),Leiden University (UL)
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Best, P. (author)
Royal Observatory
Dijkema, T. J. (author)
Netherlands Institute for Radio Astronomy (ASTRON)
De Gasperin, F. (author)
Universität Hamburg,University of Hamburg
Hardcastle, M. J. (author)
University of Hertfordshire
Heald, G. (author)
Rijksuniversiteit Groningen,University of Groningen,Netherlands Institute for Radio Astronomy (ASTRON)
Prandoni, I. (author)
Istituto nazionale di astrofisica (INAF)
Sabater, J. (author)
Royal Observatory
Shimwell, T. W. (author)
Universiteit Leiden (UL),Leiden University (UL)
Tasse, C. (author)
Paris Diderot University, France
van Bemmel, I. (author)
Joint Institute for VLBI in Europe (JIVE)
Brüggen, M. (author)
Universität Hamburg,University of Hamburg
Brunetti, G. (author)
Istituto nazionale di astrofisica (INAF)
Conway, John, 1963 (author)
Chalmers tekniska högskola,Chalmers University of Technology
Enßlin, T.A. (author)
Max Planck Gesellschaft zur Förderung der Wissenschaften e.V. (MPG),Max Planck Society for the Advancement of Science (MPG)
Engels, D. (author)
Universität Hamburg,University of Hamburg
Falcke, H. (author)
Radboud Universiteit,Radboud University,Netherlands Institute for Radio Astronomy (ASTRON)
Ferrari, C. (author)
Observatoire de la Cote d'Azur
Haverkorn, M. (author)
Radboud Universiteit,Radboud University,Universiteit Leiden (UL),Leiden University (UL)
Jackson, N. (author)
University of Manchester
Jarvis, M. J. (author)
University Of Oxford,University of the Western Cape
Kapinska, A. D. (author)
University of Portsmouth,University of Western Australia,ARC Centre of Excellence for All-sky Astrophysics (CAASTRO)
Mahony, E. (author)
Netherlands Institute for Radio Astronomy (ASTRON)
Miley, G. K. (author)
Universiteit Leiden (UL),Leiden University (UL)
Morabito, L. K. (author)
Universiteit Leiden (UL),Leiden University (UL)
Morganti, R. (author)
Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen
Orru, E. (author)
Netherlands Institute for Radio Astronomy (ASTRON)
Retana-Montenegro, E. (author)
Universiteit Leiden (UL),Leiden University (UL)
Sridhar, S. S. (author)
Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen
Toribio, M. C. (author)
Universiteit Leiden (UL),Leiden University (UL)
White, G. J. (author)
STFC Rutherford Appleton Laboratory,Open University
Wise, M. W. (author)
Netherlands Institute for Radio Astronomy (ASTRON)
Zwart, J. T L (author)
University of the Western Cape,University of Cape Town
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 (creator_code:org_t)
2016-05-29
2016
English.
In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 460:3, s. 2385-2412
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • We present the first wide area (19 deg(2)), deep (a parts per thousand 120-150 mu Jy beam(-1)), high-resolution (5.6 x 7.4 arcsec) LOFAR High Band Antenna image of the Bootes field made at 130-169 MHz. This image is at least an order of magnitude deeper and 3-5 times higher in angular resolution than previously achieved for this field at low frequencies. The observations and data reduction, which includes full direction-dependent calibration, are described here. We present a radio source catalogue containing 6 276 sources detected over an area of 19 deg(2), with a peak flux density threshold of 5 sigma. As the first thorough test of the facet calibration strategy, introduced by van Weeren et al., we investigate the flux and positional accuracy of the catalogue. We present differential source counts that reach an order of magnitude deeper in flux density than previously achieved at these low frequencies, and show flattening at 150-MHz flux densities below 10 mJy associated with the rise of the low flux density star-forming galaxies and radio-quiet AGN.

Subject headings

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Keyword

radio continuum: galaxies
surveys
galaxies: active
techniques: interferometric

Publication and Content Type

art (subject category)
ref (subject category)

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