SIMBAD references

1995A&AS..113..409S - Astron. Astrophys., Suppl. Ser., 113, 409-418 (1995/November-1)

Millimeter-wavelength observations of compact steep-spectrum sources.


Abstract (from CDS):

Using the IRAM 30-m telescope, we have measured 90- and 230-GHz flux densities for a sample of 76 sources, about 70 of which are compact steep-spectrum radio sources (CSSs). These flux densities have been used to extend the radio spectra of the CSSs to millimeter wavelengths, and look for deviations of their high-frequency spectra from the trends established at lower frequencies. Since flat-spectrum, cm-wavelength, nuclear components have been detected in some of these sources, it is possible that such radio cores are self-absorbed at cm wavelengths, but could make their presence felt in the mm range via a flattening of the integrated spectrum. Alternatively, if the nucleus is no longer active and there is no fresh supply of energy to the extended features, one might find high-frequency spectral steepening caused by radiative losses. In this paper we present the results of our observations and discuss their implications.

Abstract Copyright:

Journal keyword(s): galaxies: active - galaxies: nuclei - quasars: general - radio continuum: galaxies

Nomenclature: Table 1: [SJS95] HHMM+DDd N=76

CDS comments: table 1 : 4C 00.28 misprint for 4C -00.28

Simbad objects: 76

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