High redshift radio galaxies from the Molonglo Catalogue. II

Journal Article · Thu Aug 01 04:00:00 EDT 1991 · Astronomical Journal; (United States)

DOI:https://doi.org/10.1086/115891· OSTI ID:5223907

Mccarthy, P J; Van breughel, W; Kapahi, V K; Subrahmanya, C R ^[1]

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1. Observatories of the Carnegie Institution, Pasadena, CA (United States) Lawrence Livermore National Lab., Livermore, CA (United States) Tata Inst. of Fundamental Research, Pune (India)

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 {minus}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 greater than 1) radio galaxies. Long slit spectroscopic observations have yielded redshifts for all of the galaxies, three of which have z greater than 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 from the 3C sources, the 1 Jy galaxies having stronger cores and jets. 25 refs.

• OSTI ID: 5223907
• Journal Information: Astronomical Journal; (United States), Journal Name: Astronomical Journal; (United States) Vol. 102; ISSN 0004-6256; ISSN ANJOA
• Country of Publication: United States
• Language: English

Related Subjects

640105* -- Astrophysics & Cosmology-- Galaxies
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
CATALOGS
CORRELATIONS
COSMIC RADIO SOURCES
DOCUMENT TYPES
ELECTROMAGNETIC RADIATION
EMISSION SPECTRA
FLUX DENSITY
GALAXIES
IDENTIFICATION SYSTEMS
MAPS
MORPHOLOGY
PLASMA JETS
RADIATIONS
RADIO GALAXIES
RADIOWAVE RADIATION
RED SHIFT
SPECTRA
SURVEYS
VISIBLE RADIATION