J/MNRAS/507/2885ivo://CDS.VizieR/J/MNRAS/507/2885doi:10.26093/cds/vizier.75072885CDSFilipovic M.D.Bojicic I.S.Grieve K.R.Norris R.P.Tothill N.F.H.,Shobhana D.Rudnick L.Prandoni I.Andernach H.Hurley-Walker N.,Alsaberi R.Z.E.Anderson C.S.Collier J.D.Crawford E.J.For B.-Q.,Galvin T.J.Haberl F.Hopkins A.M.Ingallinera A.Kavanagh P.J.,Koribalski B.S.Kothes R.Leahy D.Leverenz H.Maggi P.Maitra C.,Marvil J.Pannuti T.G.Park L.A.F.Payne J.L.Pennock C.M.Riggi S.,Rowell G.Sano H.Sasaki M.Staveley-Smith L.Trigilio C.Umana G.,Urosevic D.Van Loon J.T.Vardoulaki E.2024-08-21T20:18:29Z2022-02-04T09:18:04ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsradio-continuum-emissionWe present a comprehensive multifrequency catalogue of radio sources behind the Large Magellanic Cloud (LMC) between 0.2 and 20GHz, gathered from a combination of new and legacy radio continuum surveys. This catalogue covers an area of ~144deg^2^ at angular resolutions from 45 arcsec to ~3 arcmin. We find 6434 discrete radio sources in total, of which 3789 are detected at two or more radio frequencies. We estimate the median spectral index ({alpha}; where S_v_~{nu}^{alpha}^) of {alpha}=-0.89 and mean of -0.88+/-0.48 for 3636 sources detected exclusively at two frequencies (0.843 and 1.384GHz) with similar resolution [full width at half-maximum (FWHM) ~40-45 arcsec]. The large frequency range of the surveys makes it an effective tool to investigate Gigahertz Peak Spectrum (GPS), Compact Steep Spectrum (CSS), and Infrared Faint Radio Source (IFRS) populations within our sample. We find 10 GPS candidates with peak frequencies near 5GHz, from which we estimate their linear size. 1866 sources from our catalogue are CSS candidates with {alpha}<-0.8. We found six candidates for High Frequency Peaker (HFP) sources, whose radio fluxes peak above 5GHz and no sources with unconstrained peaks and {alpha}>0.5. We found optical counterparts for 343 of the radio continuum sources, of which 128 have a redshift measurement. Finally, we investigate the population of 123 IFRSs found in this study.2021MNRAS.507.2885Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/507/2885CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/259 : 6dF galaxy survey final redshift release (Jones+, 2009)VIII/81 : Sydney University Molonglo Sky Survey (SUMSS V2.1)J/ApJ/747/107 : QSO Candidates in the MACHO LMC database (Kim+, 2012)J/ApJ/701/508 : 5000 AGNs behind the Magellanic clouds (Kozlowski+, 2009)J/ApJ/746/27 : Magellanic Quasars Survey. II. AGNs behind LMCJ/ApJ/775/92 : MQS III: AGNs behind LMC and SMC (Kozlowski+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/507/2885https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/507/2885http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/507/2885https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/507/2885https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/507/2885http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/507/2885GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/507/2885/table3 (Point source catalogue in the directions of the LMC)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/507/2885/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/507/2885/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/507/2885/table3?GETtext/xml+votable180.050000true60.574167-73.7041670.005555555555555556Cone search capability for table J/MNRAS/507/2885/table4 (Source list at 0.843 GHz derived from ASKAP-Beta survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/507/2885/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/507/2885/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/507/2885/table4?GETtext/xml+votable180.050000true68.780833-68.4066670.005555555555555556Cone search capability for table J/MNRAS/507/2885/table5 (source list at 0.843 GHz derived from MOST)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/507/2885/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/507/2885/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/507/2885/table5?GETtext/xml+votable180.050000true67.465833-72.4552780.0055555555555555564/2065-2070 5/8223 8259 8284-8286 8448-8450 9352 9354 9376 9378 9384 9386 6/32887 33031 33033-33035 33148 33168-33169 33172-33173 33216-33217 33220-33221 33232 33804 33808-33809 33824 37387 37412 38912-38914 38920 38922 38944 389461.3252139338088282e-25 5.517906024225661e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/507/2885?format=asciiRadiodefaultJ/MNRAS/507/2885/table3Point source catalogue in the directions of the LMCrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMoreindicates data in tables 6 and/or table7meta.ref.urlcharNameSource name (HHMMSS+DDMMSS)meta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Delclination (J2000)pos.eq.dec;meta.mainl_FGLEAMUpper limit flag on GLEAM 200MHz flux densitymeta.code.errorcharFGLEAM? Flux density at 200MHz (Hurley-Walker in prep.)mJyphot.flux.density;em.radio.100-200MHzintnullablee_FGLEAM? Uncertainty in flux density at 200MHzmJystat.errorintnullableFSUMSS? Flux density at 843MHz (Mauch et al., 2008, Cat. VIII/81)mJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_FSUMSS? Uncertainty in flux density at 843MHzmJystat.errorfloatnullableFATCA-20cmFlux density at 1384MHzmJyphot.flux.density;em.radio.750-1500MHzfloatu_FATCA-20cm[:] Uncertainty flag on ATCA 1384MHz flux densitymeta.code.errorchare_FATCA-20cmUncertainty in flux density at 1384MHzmJystat.errorfloatFATCA-6cm? Flux density at 4800MHzmJyphot.flux.density;em.radio.3-6GHzfloatnullablee_FATCA-6cm? Uncertainty in flux density at 4800MHzmJystat.errorfloatnullableFATCA-3cm? Flux density at 8640MHzmJyphot.flux.density;em.radio.6-12GHzdoublenullablee_FATCA-3cm? Uncertainty in flux density at 8640MHzmJystat.errorfloatnullableFMRC? Flux density at 408MHz (Large et al., 1981MNRAS.194..693L, Cat. VIII/16)mJyphot.flux.density;em.radio.200-400MHzintnullablee_FMRC? Uncertainty in flux density at 408MHzmJystat.errorintnullableFPMN? Flux density 4850MHz (Griffith and Wright, 1993AJ....105.1666G, Cat. VIII/38)mJyphot.flux.density;em.radio.3-6GHzfloatnullablee_FPMN? Uncertainty in flux density 4850MHzmJystat.errorfloatnullableFAT20G-6cm? Flux density at 4850MHz (Murphy et al., 2010, Cat. J/MNRAS/402/2403mJyphot.flux.density;em.radio.3-6GHzfloatnullablee_FAT20G-6cm? Uncertainty in flux density at 4850MHzmJystat.errorfloatnullableFAT20G-3cm? Flux density at 8640MHz (Murphy et al., 2010, Cat. J/MNRAS/402/2403mJyphot.flux.density;em.radio.6-12GHzfloatnullablee_FAT20G-3cm? Uncertainty in flux density at 8640MHzmJystat.errorfloatnullableFAT20G-2cm? Flux density at 19GHz (Murphy et al., 2010, Cat. J/MNRAS/402/2403mJyphot.flux.density;em.radio.12-30GHzfloatnullablee_FAT20G-2cm? Uncertainty in flux density at 19GHzmJystat.errorfloatnullablealpha? Spectral Indexspect.indexfloatnullablee_alpha? Uncertainty in spectral Indexstat.error;pos.eq.rafloatnullableo_alpha? Number of points used for spectral index fitmeta.numberintnullableClassProposed class of the object, BLLac, FSRQ, GPS, HFP or IFRSsmeta.code.classcharJ/MNRAS/507/2885/table4Source list at 0.843 GHz derived from ASKAP-Beta surveyrmsLocal rmsmJy/beaminstr.det.noisefloatRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFp843MHzPeak flux at 0.843GHzmJy/beamphot.flux.density;em.radio.750-1500MHzfloate_Fp843MHz? Uncertainty in peak flux at 0.843GHzmJy/beamstat.errorfloatnullableS843MHzFlux density at 0.843GHzmJyphot.flux.density;em.radio.750-1500MHzfloate_S843MHz? Uncertainty in flux density at 0.843GHzmJystat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoSequential number within the tablemeta.recordintJ/MNRAS/507/2885/table5source list at 0.843 GHz derived from MOSTe_S843MHz? Uncertainty in flux density at 0.843GHzmJystat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoSequential number within the tablemeta.recordintRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainFp843MHzPeak flux at 0.843GHzmJy/beamphot.flux.density;em.radio.750-1500MHzfloate_Fp843MHz? Uncertainty in peak flux at 0.843GHzmJy/beamstat.errorfloatnullableS843MHzFlux density at 0.843GHzmJyphot.flux.density;em.radio.750-1500MHzfloatrmsLocal rmsmJy/beaminstr.det.noisefloatJ/MNRAS/507/2885/table6Sources from our base catalogue cross-matched with six optical surveys used in this studyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSource name (HHMMSS+DDMMSS)meta.id;meta.maincharz1? First redshiftsrc.redshiftdoublenullablez2? Second redshiftsrc.redshiftdoublenullabler_z1? Reference for z1 (1)meta.ref;pos.frameintnullabler_z2? Reference for z2 (1)meta.ref;pos.frameintnullablerdetDetections references (1)meta.refcharJ/MNRAS/507/2885/table7Properties of IFRSs studied hererecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameATCA name (HHMMSS+DDMMSS)meta.id;meta.maincharIRNameIR source ID (JHHMMSS.ss+DDMMSS.s)meta.idcharS1.4GHzFlux density at 1.4GHzmJyphot.flux.density;em.radio.750-1500MHzfloatS843MHz? Flux density at 843MHzmJyphot.flux.density;em.radio.750-1500MHzfloatnullableS3.6umFlux density at 3.6um (SAGE) or 3.4um (CatWISE2000)uJyphot.mag;em.IR.3-4umfloatalpha? Spectral indexspect.indexfloatnullabler_S3.6umReference catalogue for S3.6ummeta.ref;pos.framechar