Optical Spectra of Four Objects Identified with Variable Radio Sources

Details Optical Spectra of Four Objects Identified with Variable Radio Sources Optical Spectra of Four Objects Identified with Variable Radio Sources

2003-03-26

arxiv.org/abs/astro-ph/0303569v1

Astron.Lett. 26 (2000) 339-343; Pisma Astron.Zh. 26 (2000) 403-407

Astronomy and Astrophysics

Astrophysics

4 pages, PDF

Scientific paper

10.1134/1.20400

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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