J/AZh/74/812ivo://CDS.VizieR/J/AZh/74/812CDSTyul'bashev S.A.2001-04-14T22:52:51Z2001-04-14T22:52:47ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frradio-sourcesradio-astronomyAn analysis of 125 radio sources from a 102MHz survey of scintillating sources is presented. These compact (<1") radio sources are identified with radio sources in the most sensitive catalogs currently available. Analysis of the integrated spectra for these objects indicates that the compact sources have steep spectra ({alpha}>0.5). There is a tendency for weaker sources to be more compact. The inferred spectral indices for compact sources in the cores of extended objects are on average lower than the integrated values. The most likely candidates for optical counterparts to the compact radio sources from the scintillating source survey are steep-spectrum quasars.1997AZh....74..812Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AZh/74/812CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AZh/74/812https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AZh/74/812http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AZh/74/812https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AZh/74/812https://vizier.iucaa.in/viz-bin/votable?-source=J/AZh/74/812http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AZh/74/812GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapRadiodefaultJ/AZh/74/812/table1Source flux densities, spectral indices, and compactnessesl_RLimit flag on Rmeta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (based on 1950 position) (1)meta.id;meta.maincharrmsrms fluctuation for the scintillating source flux density at 102MHz (1)Jyinstr.det.noisefloatS102MHzFlux density at 102MHz (1)Jyphot.flux.density;em.radio.100-200MHzfloatS151MHz? Integrated flux density at 151MHz (2)Jyphot.flux.density;em.radio.100-200MHzfloatnullableS365MHz? Integrated flux density at 365MHz (3)Jyphot.flux.density;em.radio.200-400MHzfloatnullableS408MHz? Integrated flux density at 408MHz (4)Jyphot.flux.density;em.radio.200-400MHzfloatnullableS1400MHz? Integrated flux density at 1400MHz (5)Jyphot.flux.density;em.radio.750-1500MHzfloatnullableS4885MHz? Integrated flux density at 4885MHz (6)Jyphot.flux.density;em.radio.3-6GHzfloatnullableSI? Spectral index for the integrated spectraspect.indexfloatnullableR? Compactness of the source (7)phot.flux;arith.ratiofloatnullableu_R[?] Uncertainty flag on Rmeta.code.errorchar