SIMBAD references

2002A&A...386...97J - Astronomy and Astrophysics, volume 386, 97-113 (2002/4-4)

The Parkes quarter-Jansky flat-spectrum sample. I. Sample selection and source identifications.

JACKSON C.A., WALL J.V., SHAVER P.A., KELLERMANN K.I., HOOK I.M. and HAWKINS M.R.S.

Abstract (from CDS):

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 α^5 GHz^_2.7 GHz_≥-0.4 where Sν∝να. The sample covers all right ascensions and the declination range from -80.°0 to +2.°5, excluding low galactic latitudes (|b|<10°) 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 BLLac 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.

Abstract Copyright:

Journal keyword(s): catalogues - radio continuum: galaxies - BL Lac objects: general - galaxies: general - quasars: general

VizieR on-line data: <Available at CDS (J/A+A/386/97): tablea1.dat notes.dat refs.dat>

Simbad objects: 880

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2019.09.21-13:53:45

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