Optical spectra of four objects identified with variable radio sources |
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| Authors: | V. Chavushyan R. Mujica A. G. Gorshkov V. K. Konnikova M. G. Mingaliev |
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| Affiliation: | (1) National Institute of Astrophysics, Optics, and Electronics, Puebla, Mexico;(2) Sternberg Astronomical Institute, Universitetskii pr. 13, Moscow, 119899, Russia;(3) Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Stavropol’skii krai, 357147, Russia |
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| Abstract: | We obtained optical spectra of four objects identified with variable radio sources. Three objects (0029+0554, 0400+0550, 2245+0500) were found to be quasars with redshifts of 1.314, 0.761, and 1.091. One object (2349+0534) has a continuum spectrum characteristic of BL Lac objects. We analyze spectra of the radio sources in the range 0.97–21.7 GHz for the epoch 1997 and in the range 3.9–11.1 GHz for the epoch 1990, as well as the pattern of variability of their flux densities on time scales of 1.5 and 7 years. |
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| Keywords: | optical spectra radio sources |
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