VLBI observations of 24 3CR CSS radio sources at 50 CM

Details VLBI observations of 24 3CR CSS radio sources at 50 CM VLBI observations of 24 3CR CSS radio sources at 50 CM

Dec 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...252..513n&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 252, no. 2, Dec. 1991, p. 513-527. Research supported by NNSFC.

Astronomy and Astrophysics

Astronomy

35

Astronomical Catalogs, Galaxies, Quasars, Radio Sources (Astronomy), Radio Spectra, Very Long Base Interferometry, Angular Resolution, Data Reduction, Luminous Intensity, Sky Surveys (Astronomy), Very Large Array (Vla)

Scientific paper

The results are presented of snapshot observations carried out at 50 cm with a Global VLBI Network on 24 compact steep-spectrum sources (CSSs) from the 3CR catalogue (3C43, 48, 49, 67, 119, 138, 186, 190, 216, 237, 241, 268.3, 287, 298, 299, 303.1, 305.1, 309.1, 318, 343, 343.1, 346, 380, 454). The angular resolution ranges from about 20 mas for the global data to about 100 mas for the local networks only. The minimum measurable surface brightness ranges from approximately 10 to approximately 40 mJy/beam. Cores are identified or confirmed in six sources (3C43, 186, 190, 216, 298, 346) through the spectral information contained in these observations. For radio components of less than about 150 mas the present data allow the radio spectra to be evaluated down to 610 MHz. In general, no evidence is found for self-absorption except in the radio cores. Data reduction techniques are developed to deal with the poor UV coverage of snapshot VLBI observations.

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