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LOFAR/H-ATLAS: a de...
LOFAR/H-ATLAS: a deep low-frequency survey of the Herschel-ATLAS North Galactic Pole field
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- Hardcastle, M. J. (author)
- University of Hertfordshire
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- Gurkan, G. (author)
- University of Hertfordshire
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- van Weeren, R. J. (author)
- Harvard-Smithsonian Center for Astrophysics
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- Williams, W. L. (author)
- University of Hertfordshire
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- Best, P. N. (author)
- Royal Observatory
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- De Gasperin, F. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Rafferty, D. (author)
- Universität Hamburg,University of Hamburg
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- Read, S. C. (author)
- University of Hertfordshire
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- Sabater, J. (author)
- Royal Observatory
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- Shimwell, T. W. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Smith, D. J. B. (author)
- University of Hertfordshire
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- Tasse, C. (author)
- Paris Diderot University, France
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- Bourne, N. (author)
- Royal Observatory
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- Brienza, M. (author)
- Rijksuniversiteit Groningen,University of Groningen,Netherlands Institute for Radio Astronomy (ASTRON)
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- Brüggen, M. (author)
- Universität Hamburg,University of Hamburg
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- Brunetti, G. (author)
- Istituto nazionale di astrofisica (INAF)
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- Chyz̊y, K.T. (author)
- Jagiellonian University in Kraków, Poland
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- Conway, John, 1963 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Dunne, L. (author)
- Cardiff University,Royal Observatory
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- Eales, S. (author)
- Jagiellonian University in Kraków, Poland
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- Maddox, S. J. (author)
- Royal Observatory,Cardiff University
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- Jarvis, M. J. (author)
- University Of Oxford,University of the Western Cape
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- Mahony, E. (author)
- ARC Centre of Excellence for All-sky Astrophysics (CAASTRO),The University of Sydney
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- Morganti, R. (author)
- Netherlands Institute for Radio Astronomy (ASTRON),Rijksuniversiteit Groningen,University of Groningen
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- Prandoni, I. (author)
- Istituto nazionale di astrofisica (INAF)
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- Rottgering, H. (author)
- Universiteit Leiden (UL),Leiden University (UL)
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- Valiante, E. (author)
- Cardiff University
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- White, G. J. (author)
- Open University,STFC Rutherford Appleton Laboratory
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(creator_code:org_t)
- 2016-07-20
- 2016
- English.
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In: Monthly Notices of the Royal Astronomical Society. - : Oxford University Press (OUP). - 0035-8711 .- 1365-2966. ; 462:2, s. 1910-1936
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Abstract
Subject headings
Close
- We present Low-Frequency Array (LOFAR) High-Band Array observations of the Herschel-ATLAS North Galactic Pole survey area. The survey we have carried out, consisting of four pointings covering around 142 deg(2) of sky in the frequency range 126-173 MHz, does not provide uniform noise coverage but otherwise is representative of the quality of data to be expected in the planned LOFAR wide-area surveys, and has been reduced using recently developed 'facet calibration' methods at a resolution approaching the full resolution of the data sets (similar to 10 x 6 arcsec) and an rms off-source noise that ranges from 100 mu Jy beam(-1) in the centre of the best fields to around 2 mJy beam(-1) at the furthest extent of our imaging. We describe the imaging, cataloguing and source identification processes, and present some initial science results based on a 5 sigma source catalogue. These include (i) an initial look at the radio/far-infrared correlation at 150 MHz, showing that many Herschel sources are not yet detected by LOFAR; (ii) number counts at 150 MHz, including, for the first time, observational constraints on the numbers of star-forming galaxies; (iii) the 150-MHz luminosity functions for active and star-forming galaxies, which agree well with determinations at higher frequencies at low redshift, and show strong redshift evolution of the star-forming population; and (iv) some discussion of the implications of our observations for studies of radio galaxy life cycles.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- function
- galaxies
- star-formation history
- sky survey
- galaxies
- active
- luminosity
- infrared
- sdss-iii
- demonstration phase
- radio continuum
- infrared-radio correlation
- science
- wide-field
- less-than 1.0
- galaxies
- mass-selected galaxies
- forming galaxies
Publication and Content Type
- art (subject category)
- ref (subject category)
Find in a library
To the university's database
- By the author/editor
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Hardcastle, M. J ...
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Gurkan, G.
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van Weeren, R. J ...
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Williams, W. L.
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Best, P. N.
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De Gasperin, F.
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show more...
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Rafferty, D.
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Read, S. C.
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Sabater, J.
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Shimwell, T. W.
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Smith, D. J. B.
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Tasse, C.
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Bourne, N.
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Brienza, M.
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Brüggen, M.
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Brunetti, G.
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Chyz̊y, K.T.
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Conway, John, 19 ...
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Dunne, L.
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Eales, S.
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Maddox, S. J.
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Jarvis, M. J.
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Mahony, E.
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Morganti, R.
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Prandoni, I.
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Rottgering, H.
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Valiante, E.
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White, G. J.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Monthly Notices ...
- By the university
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Chalmers University of Technology