On the Spectral Index of Distant Radio Galaxies
arXiv:1003.0577 · doi:10.1134/S1063773710010020
Abstract
The problems of using the spectral index of radio galaxies in various tests, in particular, in selecting distant radio sources are considered. The history of the question of choosing a criterion of searching for distant radio galaxies based on the spectral index is presented. For a new catalog of 2442 radio galaxies constructed from NED, SDSS, and CATS data, an analytical form of the sp ectral index.redshift relation has been determined for the first time. The spectral index.angular size and spectral index.flux density diagrams have also been constructed. Peculiarities of the distribution of sources on these diagrams are discussed.
arXiv comment7 pages,5 figures
References in corpus (15)
- The Sloan Digital Sky Survey Quasar Catalog IV. Fifth Data Release
- Distant Radio Galaxies and their Environments
- A Sample of 669 Ultra Steep Spectrum Radio Sources to Find High Redshift Radio Galaxies
- A Radio Galaxy at z=5.19
- Galaxies appear simpler than expected
- A search for distant radio galaxies from SUMSS and NVSS: III. radio spectral energy distributions and the z-alpha correlation
- Counting Chiral Operators in Quiver Gauge Theories
- A Study of 13 Powerful Classical Double Radio Galaxies
- Catalog of Radio Galaxies with z>0.3. I:Construction of the Sample
- A method for determining radio continuum spectra, and its application to large surveys
- Tessellated Mapping of Cosmic Background Radiation Correlations and Source Distributions
- On the efficiency of the Ultra Steep Spectrum technique in finding High-z Radiogalaxies
- Current status of the CATS database
- Clustering and properties of K-band companion galaxies around USS radio sources
- Radio identification of decameter-wave sources. II: The 30deg<delta<40deg declination interval