Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.198..843p&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 198, Mar. 1982, p. 843-860. Research supported by the Science Research
Astronomy and Astrophysics
Astronomy
136
Extragalactic Radio Sources, Radio Astronomy, Telescopes, Centimeter Waves, Spectral Resolution, Spectrum Analysis
Scientific paper
Observations are presented of 51 radio sources, of which only nine were resolved, at 2.7 GHz. The large number of unresolved sources in the sample are not all, as is commonly supposed, flat-spectrum objects, and include 44% having steep high-frequency spectra which cannot be classified as either extended radio sources or cm-excess compact objects. No evidence is found that the arcsec structure or cosmological behavior of these compact steep-spectrum sources differs from that of the flat-spectrum sources. Grounds are considered for regarding the compact steep-spectrum sources as more closely related to extended sources than to compact flat-spectrum sources.
Peacock John A.
Wall Jasper V.
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