J/A+AS/127/119ivo://CDS.VizieR/J/A+AS/127/119CDSFilipovic M.D.Pietsch W.Haynes R.F.White G.L.Jones P.A.,Wielebinski R.Klein U.Dennerl K.Kahabka P.Lazendic J.S.1998-06-11T16:20:37Z1998-06-11T16:20:12ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsradio-sourcesx-ray-sourcesBy comparing Parkes telescope radio surveys with the X-ray ROSAT All-Sky Survey (RASS) we have found 71 discrete sources of both radio and X-ray emission in the Large Magellanic Cloud (LMC). These 71 sources are mainly supernova remnants (SNRs) and SNR candidates (36), and background sources (27). For six of the sources we have no proposed identification and the other two are HII regions. A source-intensity comparison of the radio and X-ray sources shows very little correlation, but we note that the strongest SNRs at both radio and X-ray frequencies are young SNRs from Population I. Six new LMC SNR candidates are proposed. From the radio flux density of the SNRs we have estimated the SNR birth rate to be one every 100 (+/-20) yr and the star-formation rate (SFR) to be 0.7 (+/-0.2)M_{sun}_/yr. A similar comparison was undertaken for the Small Magellanic Cloud (SMC), but instead of the RASS we used a roster of pointed observations made with the ROSAT Position Sensitive Proportional Counter (PSPC). This comparison resulted in 27 sources in common between the Parkes radio and ROSAT PSPC surveys. Two new SMC sources are proposed for SNR candidates. The SMC SNR birth rate was estimated to be one every 350 (+/-70)yr and the SFR was estimated to be 0.15 (+/-0.05)M_{sun}_/yr.1998A&AS..127..119Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/127/119CatalogResearchIsServedByTAP VizieR generic servicerelated-toIX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1996)IX/11 : ROSAT PSPC Source Catalog (Voges+ 1994)J/A+AS/111/311 : Radio continuum study of the MC (Filipovic+, 1995)J/A+AS/120/77 : Radio continuum study of the MC (Filipovic+, 1996)J/A+AS/121/321 : SMC catalogue of radiosources (Filipovic+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/127/119https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/127/119http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/127/119https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/127/119https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/127/119http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/127/119GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapX-rayRadiodefaultJ/A+AS/127/119/table2Catalogue of the LMC radio sources identified in the RASSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.idintRadioNameRadio source namemeta.id;meta.maincharX-rayNameX-ray source name (1)meta.idcharS4.75GHz? Radio flux density at 4.75 GHz for LMC and 4.85GHz for SMCJyphot.flux.density;em.radio.3-6GHzfloatnullablen_S4.75GHz[f] f: flux density estimated by interpolation from other radio frequenciesmeta.notecharCRCount Ratect/ksphot.count;em.X-rayfloatalpha? Source radio spectral index (2)spect.indexfloatnullablee_alpha? Error in alphastat.errorfloatnullableHR2Hardness ratio HR2phot.flux;arith.ratiofloatTypeRadio type source (3)src.spTypecharr_SeqReferences detailed in file refs.datmeta.refcharJ/A+AS/127/119/table2bLMC cross-identificationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.id;meta.mainintNamesOther namesmeta.idcharComComments (1)meta.notecharJ/A+AS/127/119/table3Catalogue of the SMC radio sources identified in the ROSAT PSPC (Cat. <IX/11>)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.idintRadioNameRadio source namemeta.id;meta.maincharX-rayNameX-ray source name (1)meta.idcharS4.75GHz? Radio flux density at 4.75 GHz for LMC and 4.85GHz for SMCJyphot.flux.density;em.radio.3-6GHzfloatnullablen_S4.75GHz[f] f: flux density estimated by interpolation from other radio frequenciesmeta.notecharCRCount Ratect/ksphot.count;em.X-rayfloatalpha? Source radio spectral index (2)spect.indexfloatnullablee_alpha? Error in alphastat.errorfloatnullableHR2Hardness ratio HR2phot.flux;arith.ratiofloatTypeRadio type source (3)src.spTypecharr_SeqReferences detailed in file refs.datmeta.refcharJ/A+AS/127/119/table3bSMC cross-identificationsNamesOther namesmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqSequential numbermeta.id;meta.mainintComComments (1)meta.notecharJ/A+AS/127/119/refsReferences for table2.dat and table3.datrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.refintTextText of Referencemeta.refchar