On the spectral index of distant radio galaxies |
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| Authors: | O V Verkhodanov M L Khabibullina |
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| Institution: | 1.Special Astrophysical Observatory,Russian Academy of Sciences,Nizhnii Arkhyz,Karachai-Cherkessian Republic, Russia |
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| 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 spectral 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. |
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