High redshift radio galaxies from the Molonglo Catalogue. II

McCarthy, P. J. ; van Breughel, W. ; Kapahi, V. K. ; Subrahmanya, C. R. (1991) High redshift radio galaxies from the Molonglo Catalogue. II Astronomical Journal, 102 . pp. 522-536. ISSN 0004-6256

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Official URL: http://adsabs.harvard.edu/cgi-bin/bib_query?1991AJ...

Related URL: http://dx.doi.org/10.1086/115891


We report further results from the ongoing study of radio galaxies from the Molonglo Reference Catalogue are reported. The sources were selected to have 408 MHz flux densities greater than 0.95 Jy and low frequency spectral indices steeper than -0.9. VLA 6-cm maps, optical identifications and redshifts for 18 sources are presented. Most of these sources are identified with faint galaxies, many of which have extended optical structures with morphologies characteristic of high redshift (z > 1) radio galaxies. Long slit spectroscopic observations have yielded redshifts for all of the galaxies, three of which have z > 2. Spectrophotometry of 1 Jy and the 3CR samples are used to distinguish between an L (emission line) versus L (radio) correlation as opposed to an L (emission line) versus redshift correlation. The results strongly support an intrinsic L (emission line) versus L (radio) correlation. The structures of the sources in this and other 1 Jy samples are substantially different fro the 3C sources, the 1 Jy galaxies having stronger cores and jets.

Item Type:Article
Source:Copyright of this article belongs to American Astronomical Society.
Keywords:Astronomical Catalogs; Radio Galaxies; Red Shift; Very Large Array (Vla); Astrometry; Emission Spectra; Line Spectra; Radio Sources (Astronomy); Sky Surveys (Astronomy)
ID Code:59238
Deposited On:08 Sep 2011 10:58
Last Modified:18 May 2016 09:53

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