J/MNRAS/506/3540ivo://CDS.VizieR/J/MNRAS/506/3540doi:10.26093/cds/vizier.75063540CDSPennock C.M.van Loon J.T.Filipovic M.D.Andernach H.Haberl F.,Kothes R.Lenc E.Rudnick L.White S.V.Agliozzo C.Anton S.,Bojicic I.Bomans D.J.Collier J.D.Crawford E.J.Hopkins A.M.,Jeganathan K.Kavanagh P.J.Koribalski B.S.Leahy D.Maggi P.,Maitra C.Marvil J.Michalowski M.J.Norris R.P.Oliveira J.M.,Payne J.L.Sano H.Sasaki M.Staveley-Smith L.Vardoulaki E.2024-08-21T20:18:18Z2021-08-09T05:51:32ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsradio-continuum-emissionsurveysplanetary-nebulaeactive-galactic-nucleiWe present an analysis of a new 120 deg^2^ radio continuum image of the Large Magellanic Cloud (LMC) at 888MHz with a bandwidth of 288MHz and beam size of 13.9"x12.1", from the Australian Square Kilometre Array Pathfinder (ASKAP) processed as part of the Evolutionary Map of the Universe (EMU) survey. The median Root Mean Squared noise is 58uJy/beam. We present a catalogue of 54612 sources, divided over a Gold list (30866 sources) complete down to 0.5mJy uniformly across the field, a Silver list (22080 sources) reaching down to <0.2mJy and a Bronze list (1666 sources) of visually inspected sources in areas of high noise and/or near bright complex emission. We discuss detections of planetary nebulae and their radio luminosity function, young stellar objects showing a correlation between radio luminosity and gas temperature, novae and X-ray binaries in the LMC, and active stars in the Galactic foreground that may become a significant population below this flux level. We present examples of diffuse emission in the LMC (HII regions, supernova remnants, bubbles) and distant galaxies showcasing spectacular interaction between jets and intracluster medium. Among 14333 infrared counterparts of the predominantly background radio source population we find that star-forming galaxies become more prominent below 3mJy compared to active galactic nuclei.We combine the new 888MHz data with archival Australia Telescope Compact Array data at 1.4GHz to determine spectral indices; the vast majority display synchrotron emission but flatter spectra occur too. We argue that the most extreme spectral index values are due to variability.2021MNRAS.506.3540Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/506/3540CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/506/3540https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/506/3540http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/506/3540https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/506/3540https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/506/3540http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/506/3540GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/506/3540/catalog (ASKAP-EMU 888MHz catalogue of the LMC, created using Aegean)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/506/3540/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/506/3540/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/506/3540/catalog?GETtext/xml+votable180.050000true97.83706-74.222950.005555555555555556Cone search capability for table J/MNRAS/506/3540/table3 (ASKAP 888MHz radio detections within 10 arcsec of sources at one time classed as potential PNe)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/506/3540/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/506/3540/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/506/3540/table3?GETtext/xml+votable180.050000true66.155833-69.7058330.005555555555555556Cone search capability for table J/MNRAS/506/3540/list (Information of fits image)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/506/3540/list?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/506/3540/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/506/3540/list?GETtext/xml+votable180.050000true54.88014-70.715420.0055555555555555564/2065-2070 2338 5/8259 8284-8286 8448 9376 9378 9384 9386 9728 6/32893 32895 32981 33029-33031 33035 33148 33152-33153 33156-33157 33160 33168-33169 33172-33173 33216-33217 33220-33221 33232 33796-33798 33800-33802 33824 37386-37388 37390 37508 37510 37516 37518 37540 37542 37548 37550 38916 38918 38920-389225.883949854262862e-25 5.883949854262862e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/506/3540?format=asciiRadiodefaultJ/MNRAS/506/3540/catalogASKAP-EMU 888MHz catalogue of the LMC, created using AegeanrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSourceListSource list (1)meta.codecharEMU-IDEMU ID (G1)meta.id;meta.maincharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainindexede_RAJ2000Error in Right Ascension (J2000)degstat.error;pos.eq.radoubleDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexede_DEJ2000Error in Declination (J2000)degstat.error;pos.eq.decdoublePeakFluxPeak flux density per beam at 888MHzmJy/beamphot.flux.density;em.radio.750-1500MHzfloate_PeakFlux? Peak flux density per beam errormJy/beamstat.errordoublenullableIntFluxIntegrated flux density at 888MHz, calculated from a, b and peak flux and the synthesised beam sizemJyphot.flux.density;em.radio.750-1500MHzfloate_IntFlux? Integrated flux density errormJystat.errordoublenullableaFitted semi-major axisarcsecphys.angSize;srcfloate_a? Fitted semi-major axis errorarcsecstat.errorfloatnullablebFitted semi-minor axisarcsecphys.angSize.sminAxis;meta.modelledfloate_b? Fitted semi-minor axis errorarcsecstat.errorfloatnullablePA[] Fitted Position Angledegpos.posAng;meta.modelledfloate_PA? Fitted Position Angle errordegstat.errorfloatnullableIslandNumber of the island from which the source was fitmeta.idintSourceNumber of source within the Islandmeta.idintBackgroundFlux density per beam measured from the background map at the source positionmJy/beaminstr.backgroundfloatLocalRMSFlux density per beam measured from the rms map at the source positionmJy/beamstat.errorfloatResMeanMean of the residual flux remaining in the island after fitted Gaussian is subtractedmJystat.fit.residualfloatResstdStandard deviation of the residual flux remaining in the island after fitted Gaussian is subtractedmJystat.errorfloatFlags[024] Flags (2)meta.code.errorcharJ/MNRAS/506/3540/table3ASKAP 888MHz radio detections within 10 arcsec of sources at one time classed as potential PNerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameDesignation in Simbadmeta.idcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainEMU-IDEMU ID (G1)meta.id;meta.maincharPeakFluxPeak flux density per beam at 888MHzmJy/beamphot.flux.density;em.radio.750-1500MHzfloate_PeakFluxPeak flux density per beam errormJy/beamstat.errorfloatIntFluxIntegrated flux density at 888MHz, calculated from a, b and peak flux and the synthesised beam sizemJyphot.flux.density;em.radio.750-1500MHzfloate_IntFluxIntegrated flux density errormJystat.errorfloatDeltaDistance between the radio source and the coordinates listed in Simbadarcsecpos.angDistancefloatClassClasses of the sources, see Comments for where there is doubtsrc.classcharCommentsAdditional information which casts doubt on the Classmeta.notecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/506/3540/listInformation of fits imagerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintObs.dateObservation datestime.epoch;obsnullableFreqObserved frequencyMHzem.freqfloatsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar