High redshift radio galaxies from the Molonglo Catalogue. II

Abstract

view Abstract Citations (59) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS High Redshift Radio Galaxies From the Molonglo Catalogue.II McCarthy, P. J. ; van Breughel, W. ; Kapahi, V. K. ; Subrahmanya, C. R. Abstract We report further results from our ongoing study of radio galaxies from the Molonglo Reference Catalogue. 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. Our results strongly support an intrinsic L (emission line) versus L (radio) correlation. The structure of the sources in this, and other 1 Jy samples, are substantially different from the 3C sources, the 1 Jy galaxies having stronger cores and jets. Publication: The Astronomical Journal Pub Date: August 1991 DOI: 10.1086/115891 Bibcode: 1991AJ....102..522M Keywords: Astronomical Catalogs; Radio Galaxies; Red Shift; Very Large Array (Vla); Astrometry; Emission Spectra; Line Spectra; Radio Sources (Astronomy); Sky Surveys (Astronomy); Astrophysics; RADIO SOURCES: GALAXIES full text sources ADS | data products SIMBAD (31) NED (18) Related Materials (1) Part 1: 1991AJ....102..518M