Physics
Scientific paper
Nov 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ycat.8034....0d&link_type=abstract
VizieR On-line Data Catalog: VIII/34. Originally published in: 1997MNRAS.284...85D
Physics
Radio Sources
Scientific paper
We present a new sample of Parkes half-Jansky flat-spectrum radio sources having made a particular effort to find any previously unidentified sources. The sample contains 323 sources selected according to a flux limit of 0.5 Jy at 2.7 GHz, a spectral index measured between 2.7 and 5.0 GHz of α(2.7/5.0) > -0.5, where S(f) is proportional to falpha, Galactic latitude |b| > 20° and -45° < Declination(B1950) < +10°. The sample was selected from a region 3.90 steradians in area. We have obtained accurate radio positions for all the unresolved sources in this sample and combined these with accurate optical positions from digitised photographic sky survey data to check all the optical identifications. We report new identifications based on R- and Kn-band imaging and new spectroscopic measurements of many of the sources. We present a catalogue of the 323 sources of which 321 now have identified optical counterparts and 277 have measured spectral redshifts. (2 data files).
Condon James J.
Drinkwater Michael. J.
Ellison Sara L.
Francis Paul J.
Jauncey David L.
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