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For refcode 2002A&A...386...97J:
Retrieve 878 NED objects in this reference.
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2002A&A...386...97J The Parkes quarter-Jansky flat-spectrum sample I. Sample selection and source identifications C. A. Jackson, J. V. Wall, P. A. Shaver, K. I. Kellermann, I. M. Hook and M. R. S. Hawkins Research School of Astronomy & Astrophysics, The Australian National University, Mount Stromlo Observatory, Canberra, Australia Department of Astrophysics, University of Oxford, Nuclear and Astrophysics Laboratory, Keble Road, Oxford OX1 3RH, UK European Southern Observatory, Karl-Schwarzschild-Str. 2, 85748 Garching bei Munchen, Germany National Radio Astronomy Observatory, Edgemont Road, Charlottesville, VA 22903-2475, USA Royal Observatory, Blackford Hill, Edinburgh EH3 9HJ, UK Received 7 November 2001/Accepted 22 January 2002 Abstract. We present a new sample of quarter-Jansky flat-spectrum radio sources selected to search for high-redshift quasars and to study the evolution of the flat-spectrum quasar population. The sample comprises 878 radio sources selected from the Parkes catalogues with spectral indices {alpha}_2.7 GHz_^5 GHz^ >= -0.4 where S_{nu}_ is proportional to {nu}^{alpha}^. The sample covers all right ascensions and the declination range from -80.0^deg^ to +2.5^deg^, excluding low galactic latitudes (|b| < 10^deg^) and the Magellanic Cloud regions. We have obtained improved radio source positions, firstly to reconfirm the majority of the existing identifications, and secondly, using digitized sky-survey data and deep B, Gunn-i and Gunn-z CCD-imaging, to find optical identifications for 223 previously-unidentified sources. We present the final catalogue of 878 flat-spectrum sources: 827 are compact radio sources identified with galaxies, quasars and BL Lac objects, 38 have either extended radio structure or are identified with Galactic objects (PN, HII or non-compact radio source), 4 are obscured by Galactic stars, and 9 (1 per cent of the total sample) remain unidentified. Key words: catalogues - radio continuum: galaxies - BL Lac objects: general - galaxies: general - quasars: general
Retrieve 878 NED objects in this reference.
Please click here for ADS abstract

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