Spectral Studies with the Special Astrophysical Observatory 6 m and RATAN-600 Telescopesстатья

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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.

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[1] Spectral studies with the special astrophysical observatory 6 m and ratan-600 telescopes / V. L. Afanas'Ev, S. N. Dodonov, A. V. Moiseev et al. // Astronomy Reports. — 2005. — Vol. 49, no. 5. — P. 374–389. We present optical identifications, classifications, and radio spectra for 19 radio sources from a complete sample in flux density with declinations 10-12.5 deg (J2000) obtained with the 6-m optical telescope (4000-9000 A) and RATAN-600 radio telescope (0.97-21.7 GHz) of the Special Astrophysical Observatory. Twelve objects with redshifts from 0.573 to 2.694 have been classiffied as quasars, and two objects with featureless spectra as BL Lac objects. Four objects are emission-line radio galaxies with redshifts from 0.204 to 0.311 (one also displaying absorption lines), and one object is an absorption-line galaxy with a redshift of 0.214. Radio flux densities have been obtained at six frequencies for all the sources except for two extended objects. The radio spectra of five of the sources can be separated into extended and compact components. Three objects display substantial rapid (on time scales from several days to several weeks) and long-term variability of their flux densities. [ DOI ]

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