J/ApJ/252/102ivo://CDS.VizieR/J/ApJ/252/102doi:10.26093/cds/vizier.12520102CDSCondon J.J.Condon M.A.Gisler G.Puschell J.J.2012-09-24T07:32:05Z2004-03-08T21:17:53ZCDS support team

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

cds-question@unistra.frradio-sourcesStatistically complete samples comprising 33 bright spiral galaxies that are strong radio sources were selected. Sixteen of the galaxies have integrated radio-to-optical flux ratios greater than 10 times the median value for normal spirals. The remainder contain radio cores <=20" in size and stronger than 90mJy at 1415MHz or 60mJy at 2695MHz. High-resolution (2" at 1413MHz or 0.6" at 4885MHz) maps of these galaxies were made with the Very Large Array. The radio sources are usually confined to the central 1kpc of the galaxies, lying within and extending parallel to their stellar disks. There is no evidence for ejection from central components. Most of the sources appear to be coextensive with regions of intense star formation (bolometric luminosities ~10^10-10^11L_{Sun}). The typical radio luminosity, ~10^21^W/Hz/sr at 1413MHz, of the resolved sources can be explained by synchrotron radiation from supernova remnants (SNRs) produced at the rate of ~1/yr. Five of the radio sources are <=1pc in size and probably are not related to star formation or SNRs. The radio and 10-{mu}m flux densities of the extended sources are roughly proportional. The bolometric mass-to luminosity ratios in some active regions are too low to have been maintained for a Hubble time. Nearly all of the strong, extended radio sources are found in galaxies with nearby companions, so most of the episodic bursts of star formation are apparently triggered by galaxy-galaxy interactions.1982ApJ...252..102Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/252/102CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/252/102https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/252/102http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/252/102https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/252/102https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/252/102http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/252/102GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/252/102/table3 (Positions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/252/102/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/252/102/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/252/102/table3?GETtext/xml+votable180.050000true11.88822215-25.288076360.0055555555555555566/627 1405 3506 4439 5200 5793 6098 7214 7424 7606 8106 10912 10927 11006 11206 11800 15161 15592 16655 17754 18212 18387 18809 19283 22721 25083 25907 26271 28184 31158 40410 438819.37588818922134e-25 1.9864425968556105e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/252/102?format=asciiRadiodefaultJ/ApJ/252/102/table1Complete radio-selected sample of galaxiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIAUIAU name (based on B1950 position)meta.idcharNameNGC or IC namemeta.idcharprimaryUGC? UGC (Cat. <VII/26>) numbermeta.idintnullableONameOther namesmeta.idcharTypeGalaxy type, as in RC2 (Cat. <VII/112>)meta.notecharAsample[A] A: in A samplemeta.idcharBsample[B] B: in B samplemeta.idcharCsample[C] C: in C samplemeta.idcharDsample[D] D: in D samplemeta.idcharEsample[E] E: in E samplemeta.idcharDistDistanceMpcpos.distancefloatJ/ApJ/252/102/table2Contour map parametersNameNGC, IC or UGC namemeta.idcharFreqFrequencyMHzem.freqintIAUIAU namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSize1Clean beam sizearcsecphys.angSize;instr.beamfloatSize2Clean beam sizearcsecphys.angSize;instr.beamfloatPAClean beam position angledegpos.posAng;instr.beamintIntervalCoutour interval expressed in surface rightnessKobs.paramintLevelsContour levels plottedmeta.notecharJ/ApJ/252/102/table5Radio core spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNGC or IC namemeta.idcharSize? Region sizearcsecphys.angSize;obs.fieldintnullableS1413MHz? Flux density at 1413MHzmJyphot.flux.density;em.radio.750-1500MHzintnullablee_S1413MHz? rms uncertainty on S1413MHzmJystat.errorintnullableS4885MHz? Flux density at 4885MHzmJyphot.flux.density;em.radio.3-6GHzintnullablee_S4885MHz? rms uncertainty on S4885MHzmJystat.errorintnullableOFluxReferences to other fluxes (1)meta.refcharSp-Index? Spectral index (-d(lnS)/d(ln{nu}))spect.indexfloatnullableu_Sp-IndexUncertainty flag on Sp-Indexmeta.code.errorcharL1413? Radio spectral luminosity at 1413MHz1e+21W.Hz**-1.sr**-1phot.flux.density;em.radio.750-1500MHzfloatnullableu_L1413Uncertainty flag on L1413meta.code.errorcharJ/ApJ/252/102/table6Infrared-radio flux ratios of radio-selected galaxiesNameNGC or IC namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAper? Aperturearcsecphys.angSize;instr.fovintnullablel_S10umLimit flag on S10ummeta.code.errorcharS10umFlux density at 10ummJyphot.flux.density;em.IR.8-15umintr_S10umReference for S10um (1)meta.ref;pos.framecharS1413MHz? Flux density at 1413MHzmJyphot.flux.density;em.radio.750-1500MHzintnullableu_S1413MHzUncertainty flag on S1413MHzmeta.code.errorcharl_IR/RadLimit flag on IR/Radmeta.code.errorcharIR/Rad? Infrared-to-radio flux ratiophot.flux;arith.ratiofloatnullableu_IR/RadUncertainty flag on IR/Radmeta.code.errorcharJ/ApJ/252/102/table7Galaxy-galaxy interactionrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharERS[V] V for extended radio sourcemeta.codecharCompCompanion(s)meta.notecharNoteEvidence for interactionmeta.notecharJ/ApJ/252/102/table3PositionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameNGC, IC or UGC namemeta.idcharprimaryFreqFrequency of the radio componentMHzem.freqintl_SizeLimit flag on Sizemeta.code.error;phys.angSizecharSize? Sizearcsecphys.angSizefloatnullableu_SizeUncertaitny flag on Sizemeta.code.error;phys.angSizecharSize2? Size (Size x Size2)arcsecphys.angSizefloatnullablePA? Position angledegpos.posAngintnullableCompType of component (1)src.class.structcharRAB1950Right ascension (B1950.0)pos.eq.ra;meta.maine_RAB1950rms uncertainty on right ascensionsstat.error;pos.eq.rafloatDEB1950Declination (B1950.0)pos.eq.dec;meta.maine_DEB1950rms uncertainty on DEsarcsecstat.error;pos.eq.decfloatoRA? Optical-minus-radio right ascension differencespos.eq.ra;arith.difffloatnullableoDE? Optical-minus-radio declination differencearcsecpos.eq.dec;arith.difffloatnullablen_oRA[*] * = see text for oRA/oDEmeta.notecharRefReferencesmeta.ref;pos.framechar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)pos.eq.decnullableindexed