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Studies of bright steep-spectrum radio sources |
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| Authors: | N M Lipovka A A Lipovka O V Verkhodanov E Chavira |
| Institution: | (1) St. Petersburg Branch of the Special Astrophysical Observatory, Russian Academy of Sciences, Pulkovo, St. Petersburg, 196140, Russia;(2) Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Karachaevo-Cherkesskaya Republic, 357147, Russia;(3) Instituto Nacional de Astrofísica, óptica y Electrónica, Luis Enrique Erro No. 1, Apdo Postal 51 y 216, 72840 Tonantzintla, Puebla, México |
| Abstract: | Results of studies of bright radio sources in the constellation Cetus are presented. More than 50% of the sources have radio spectral indices steeper than 0.9. Optical identifications have been determined for 35 sources. A large fraction of the radio sources are identified with weak blue galaxies. Given their spectral indices, it is likely that these objects have redshifts z=0.4–1.0. More than 20% of the steep-spectrum sources do not have optical identifications and appear to be weak galaxies with z>2. |
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