Optical and Radio Studies of Radio Sources

Details Optical and Radio Studies of Radio Sources Optical and Radio Studies of Radio Sources

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003astl...29..579a&link_type=abstract

Astronomy Letters, vol. 29, p. 579-586 (2003)

Astronomy and Astrophysics

Astronomy

4

Scientific paper

We present the classification of optical identifications and radio spectra of six radio sources from a complete (in flux density) sample in the declination range 10d00' to 12d30' (J2000.0). The observations were carried out with the 6-m Special Astrophysical Observatory telescope (Russia) in the wavelength range 3600-10000 Angstrems, the 2.1-m GHAO telescope (Mexico) in the range 4200-9000 Angstrems, and the RATAN-600 radio telescope in the frequency range 0.97-21.7 GHz. Three of the six objects under study are classified as quasars, one is a BL Lac object, one is an absorption-line radio galaxy, and one is an emission-line radio galaxy. Five objects have flat radio spectra, and one object has a power-law radio spectrum. All of the radio sources identified as quasars or BL Lac objects show variable radio flux densities. The spectra of three objects were separated into extended and compact components.

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