The Distribution of Redshifts of Radio Galaxies with Different Optical Spectra and Forms

Abstract

view Abstract Citations (10) References (12) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Distribution of Redshifts of Radio Galaxies with Different Optical Spectra and Forms Burbidge, G. R. ; O'Dell, S. L. Abstract The distribution of redshifts of 222 radio galaxies has been subjected to a power-spectrum analysis. No statistically significant spectral peaks are present for galaxies showing normal absorption-line characteristics; on the other hand, significant spectral peaks are present for those exhibiting strong emission features. Of these spectral peaks, the most significant, at a wavelength of 0.031 in redshift, occurs for these strong-emission radio galaxies which are also compact. The result is consistent with the proposal suggested earlier by Burbidge that the nonrandom features, which may suggest intrinsic redshifts, are confined to those objects-QSOs, N systems, etc.-in which radiation from stars does not dominate. Possible explanations of the apparently nonrandom features are briefly discussed. Finally a table of the most recently published small-redshift QSOs and compact emission-line galaxies is presented. The redshifts appear to conform to the 0.061 (or 0.031) periodicity found earlier. Subject headings: galaxies - quasi-stellar sources or objects - radio sources - redshifts Publication: The Astrophysical Journal Pub Date: December 1973 DOI: 10.1086/181357 Bibcode: 1973ApJ...186L..59B full text sources ADS |