Structures, spectral indexes, and optical identifications of radio sources selected from the B3 catalogue

Details Structures, spectral indexes, and optical identifications of radio sources selected from the B3 catalogue Structures, spectral indexes, and optical identifications of radio sources selected from the B3 catalogue

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....98..419v&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 98, Aug. 1989, p. 419-499.

Astronomy and Astrophysics

Astronomy

89

Astronomical Catalogs, Radio Sources (Astronomy), Identifying, Light Emission, Tables (Data)

Scientific paper

A homogeneous sample of 1103 radio sources which were selected from the Third Bologna Catalogue (Ficarra et al., 1985) at 408 MHz and which cover the flux-density range from 2.0-1.0 Jy has been mapped at 1465 MHz using the VLA at 15 arcsec resolution. Identifications are proposed for 354 of the sources. The results suggest that sizable intrinsic radio-optical displacements are possible for steep-spectrum unresolved sources, that the 408-1465 MHz spectra become steeper with decreasing flux density (to about 50 mJy), and that metric size and redshift are negatively correlated for radio galaxies.

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