Further redshifts of 1-Jy radio sources

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Astronomical Spectroscopy, Extragalactic Radio Sources, Radio Spectra, Red Shift, Emission Spectra, Faint Objects, Forbidden Transitions, Quasars, Radio Galaxies

Scientific paper

The authors have firm redshifts for a further 12 faint radio source identifications from the "1-Jy" complete radio-selected sample, two of which are galaxies with redshifts z > 1.5. Five of these identifications had previously been classified as QSOs on the basis of their optical morphology. The authors' spectroscopy shows that of these, one is definitely a galaxy and two have characteristics intermediate between those of "normal" radio galaxies and those of "normal" quasars. Two of the eight identifications previously classified as galaxies have similar "intermediate" properties. The remaining identifications have low-excitation narrow emission-line systems of the type seen in other 1-Jy radio sources by Allington-Smith et al. The authors confirm that the 1-Jy emission lines are a factor 2 weaker than those of 3C galaxies in the same redshift interval.

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