A search for steep-spectrum sources from the UTRAO, GB, and RC catalogs

Details A search for steep-spectrum sources from the UTRAO, GB, and RC catalogs A search for steep-spectrum sources from the UTRAO, GB, and RC catalogs

Aug 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991azh....68..681r&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 68, July-Aug. 1991, p. 681-694. In Russian.

Astronomy and Astrophysics

Astronomy

Astronomical Catalogs, Radio Sources (Astronomy), Radio Spectra, Astronomical Coordinates, Centimeter Waves

Scientific paper

Three high-sensitivity catalogs are compared at meter and centimeter wavelengths: UTRAO (365 MHz), GB (4.85 GHz), and RC (3.94 GHz). As a result, spectral-index distributions are constructed for about 2000 common objects in a declination strip of 5 + or - 2 deg, and a list of radio sources containing about 300 objects with steep spectra is compiled. It is shown that there is a real distinction between the spectral-index distributions for point-like and double objects. There is also a difference in the values of the mean spectral index for these classes of objects.

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