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For refcode 1997MNRAS.286..241J:
Retrieve 283 NED objects in this reference.
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Copyright by Royal Astronomical Society. 1997MNRAS.286..241J [O III] 500.7 spectroscopy of 3C galaxies and quasars at redshift z > 1 Neal Jackson and Steve Rawlings Accepted 1996 November 6. Received 1996 October 31; in original form 1994 September 23 ABSTRACT We present near infrared spectra of z > 1 quasars and radio galaxies from the 3CR and 3CRR catalogues. [O III] is detected in all but six of the 28 objects. These data extend the known correlation between the [O III] and radio luminosities of radio sources to higher radio luminosities with no increase in scatter. The previously reported difference in [O III] luminosities between radio-luminous galaxies and quasars at z < 0.8 is smaller at higher redshift and/or radio luminosity. In the context of orientation-based unified schemes of radio galaxies and quasars, this implies that the [O III] emitting region is partially hidden in the most radio-luminous galaxies seen at low redshift (z ~ 0.3) but less obscured in the even more radio-luminous galaxies seen at z ~ 1. Alternatively, such schemes do not apply to all objects - perhaps there is a class of radio galaxies with high excitation narrow emission lines but no luminous quasar nucleus. Equivalent widths of [O III] in the z > 1 quasars are similar to those at lower z, implying no change in the excitation mechanism with z or radio luminosity. Key words: galaxies: active - quasars: emission lines - quasars: general - radio continuum: galaxies.
Retrieve 283 NED objects in this reference.
Please click here for ADS abstract

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