Spectral index distributions and optical identifications for a sample of sources selected at 408 MHz

Details Spectral index distributions and optical identifications for a sample of sources selected at 408 MHz Spectral index distributions and optical identifications for a sample of sources selected at 408 MHz

Jul 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26as...61....1k&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 61, July 1985, p. 1-15.

Astronomy and Astrophysics

Astronomy

6

Astronomical Spectroscopy, Flux Density, Radio Sources (Astronomy), Visible Spectrum, Astronomical Catalogs, Spectral Energy Distribution

Scientific paper

An investigation to establish fairly accurately the dependence of a median spectral index on flux density for a sample of 184 radio sources selected from the B2 catalog at low frequency in the 408-MHz flux density range 0.45 to 0.90 Jy is considered. The sample of sources was observed partially in June 1981 and partially in September 1981 with the Effelsberg 100-m radio telescope. Flux densities measured at 4750 MHz, the computed spectral indices between 408 and 4750 MHz, and optical identifications for the complete sample of radio sources are given. A discussion of the results is also presented.

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