Optical identifications and spectra of radio sourcesстатья
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Аннотация:We present classifications, optical identifications, and radio spectra for eight radio sources from three flux-density-complete samples in the following declination ranges: 4\deg-6\deg (B1950), S $_3.9$ \gt 200 mJy; 10\deg-12\deg30’ (J2000), S $_4.85$ \gt 200 mJy; 74\deg-75\deg (J2000), S $_4.85$ \gt 100 mJy. For all these samples, the right ascensions are 0$^h$-24$^h$ and the Galactic latitudes, | b| \gt 15\deg. Our optical observations at 4000-7500 \deg were made with the 6-m telescope of the Special Astrophysical Observatory; we also observed at 0.97-21.7 GHz with the RATAN-600 radio telescope of the Special Astrophysical Observatory. We classify four of the objects as quasars and four as galaxies. Five of the radio sources have power-law spectra at 0.97-21.7 GHz, while two objects have flat spectra. The quasar J2358+0430 virtually did not vary during 23 years.