J/ApJS/241/37ivo://CDS.VizieR/J/ApJS/241/37doi:10.26093/cds/vizier.22410037CDSWhite R.L.Long K.S.Becker R.H.Blair W.P.Helfand D.J.Winkler P.F.2019-12-31T14:01:04Z2019-12-31T10:15:20ZCDS support team

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

cds-question@unistra.frgalaxiesradio-continuum-emissionsupernova-remnantsx-ray-sourcesWe have performed new 1.4 and 5 GHz observations of the Local Group galaxy M33 with the Jansky Very Large Array. Our survey has a limiting sensitivity of 20{mu}Jy (4{sigma}) and a resolution of 5.9" (FWHM), corresponding to a spatial resolution of 24pc at 817kpc. Using a new multiresolution algorithm, we have created a catalog of 2875 sources, including 675 with well-determined spectral indices. We detect sources at the position of 319 of the X-ray sources in the Tullmann+ (2011, J/ApJS/193/31) Chandra survey of M33, the majority of which are likely to be background galaxies. The radio source coincident with M33 X-8, the nuclear source, appears to be extended. Along with numerous HII regions or portions of HII region complexes, we detect 155 of the 217 optical supernova remnants (SNRs) included in the lists of Long+, 2010, J/ApJS/187/495 and Lee & Lee, 2014, J/ApJ/793/134, making this by far the largest sample of remnants at known distances with multiwavelength coverage. The remnants show a large dispersion in the ratio of radio to X-ray luminosity at a given diameter, a result that challenges the current generation of models for synchrotron radiation evolution in SNRs.2019ApJS..241...37Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/241/37CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2014)VIII/59 : The FIRST Survey, version 1999Jul (White+ 1999)J/ApJS/79/77 : Bell Lab. H I Survey - High Velocity Clouds (Stark+ 1992)J/ApJS/120/247 : Supernova remnants in M33 (Gordon+, 1999)J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006)J/AJ/134/2474 : H{alpha} emission-line stars in 7 dwarfs gal. (Massey+, 2007)J/ApJS/174/366 : Chandra ACIS survey of M33 (ChaSeM33) (Plucinsky+, 2008)J/ApJ/703/370 : Radio SNRs in nearby galaxies (Chomiuk+, 2009)J/ApJS/187/495 : SNRs in M33 from optical and X-ray (Long+, 2010)J/ApJS/193/31 : M33 Chandra ACIS survey: final catalog (Tullmann+, 2011)J/ApJS/203/8 : Optical SNR candidates in M83 (Blair+, 2012)J/other/Ser/189.15 : Point source catalogue of M31. DR2 (Galvin+, 2014)J/ApJ/786/130 : Catalog of M31 SNR candidates (Lee+, 2014)J/ApJ/793/134 : M33 SNR candidates properties (Lee+, 2014)J/ApJ/795/170 : Sample SNRs for M31 and M33 (Jennings+, 2014J/ApJS/212/21 : A deep Chandra ACIS survey of M83 (Long+, 2014)J/A+A/585/A162 : X-ray supernova remnants in LMC (Maggi+, 2016)J/MNRAS/472/308 : Supernova remnants in M33: X-ray properties (Garofali+, 2017)J/ApJ/842/97 : Spectroscopic obs. of 413 HII regions in M33 (Lin+, 2017)J/A+A/602/A1 : VLA-COSMOS 3 GHz Large Project (Smolcic+, 2017)J/AJ/154/268 : H{alpha} sources in the inner of M33 (Moody+, 2017)J/ApJ/855/140 : MMT spectra of SNRs and SNR candidates in M33 (Long+, 2018)J/A+A/622/A1 : LOFAR Two-metre Sky Survey DR1 source cat. (Shimwell+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/241/37https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/241/37http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/241/37https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/241/37https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/241/37http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/241/37GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/241/37/table2 (M33 radio source catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/241/37/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/241/37/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/241/37/table2?GETtext/xml+votable180.050000true23.0944416730.735313890.005555555555555556Cone search capability for table J/ApJS/241/37/table4 (Forced photometry of M33 SNR candidates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/241/37/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/241/37/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/241/37/table4?GETtext/xml+votable180.050000true23.126541730.46302780.005555555555555556Cone search capability for table J/ApJS/241/37/table6 (Forced photometry of M33 X-ray sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/241/37/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/241/37/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/241/37/table6?GETtext/xml+votable180.050000true23.102333330.55622220.0055555555555555566/2154 2155 2240 22419.276497240453405e-25 9.276497240453405e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/241/37?format=asciiX-rayRadiodefaultJ/ApJS/241/37/table2M33 radio source catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of source (W19-Island number)meta.id;meta.maincharRAJ2000[1] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[30/31] Degree of Declination (J2000)pos.eq.dec;meta.mainRAPkdeg[22.8/24.1] Right Ascension, peakdegpos.eq.raDEPkdeg[30.1/31.2] Declination, peakdegpos.eq.decWrnW: indicates source is below detection thresholdmeta.codecharHaTot[-4.7e-14/1.5e-12]? Integrated H-alpha flux; in erg/cm^2^/s unitsmW.m**-2phot.flux;em.line.HalphadoublenullableHaAvg[-4.4e-16/5.1e-14]? H-alpha surface brightness; erg/cm^2^/s/arcsec^2^mW.m**-2.arcsec**-2phot.mag.sb;em.line.HalphadoublenullableF1.4GHz[2/168893] Integrated flux at frequency 1.4GHzuJyphot.flux.density;em.radio.750-1500MHzdoublee_F1.4GHz[2/165] Error on F1.4GHzuJystat.errorfloatalpha[-3/3]? Spectral index {alpha} (G1)spect.indexfloatnullablee_alpha[0/2.8] Error on alpha; 0 for points at alpha clip limits (G1)stat.error;pos.eq.rafloatFint[7/106352] Flux at pivot frequency pFrequJyphot.flux.density;em.radiodoublee_Fint[2.4/379] Error on FintuJystat.errorfloatpFreq[1.3/5.6] Pivot frequency {nu}_0_ where signal-to-noise is maximizedGHzem.freqfloatFpeak[5.4/114191] Peak pixel in island from detection imageuJyphot.flux.density;em.radio;stat.maxdoublee_Fpeak[1/32] Noise in FpeakuJystat.errorfloatamaj[3.9/58.6] Major axis FWHM (1)arcsecphys.angSizefloatbmin[3.4/27.8] Minor axis FWHM (1)arcsecphys.angSizefloatPAPosition angle of major axisdegpos.posAngfloatN[1/4] Number of frequency bands with data (G2)meta.numberintIsland[1/2981] Island number (1 to 2981)meta.idintSflag[0/11] SNR detection flag (>8: most reliable matches) (G3)meta.code.errorintSNR1Names of associated SNR(s) (G4)meta.id.assoccharSNR2Names of associated SNR(s) (G4)meta.id.assoccharSNR3Names of associated SNR(s) (G4)meta.id.assoccharnXray[0/4] Number of associated X-ray sourcesmeta.numberintnHII[0/3] Number of associated H II regionsmeta.numberintJ/ApJS/241/37/table4Forced photometry of M33 SNR candidatesSimbadNameSimbad column added by the CDSmeta.idcharN[0/4] Number of frequency bands with data (G2)meta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of SNR (1)meta.id;meta.maincharRAJ2000[1] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[30/31] Degree of Declination (J2000)pos.eq.dec;meta.mainRgc[0.2/8.1] Galactocentric distancekpcpos.distance;pos.galactocentricfloatDiam[11.9/183] SNR diameterpcpos.distancefloatOptyes: SNR has SII/Halpha > 0.4meta.codecharXrayyes: SNR has XMM or Chandra X-ray detectionmeta.codecharRadyes: radio flux is greater than 3 sigmameta.codecharHaTot[6.3e-16/3.9e-13]? Integrated H-alpha fluxmW.m**-2phot.flux;em.line.HalphadoublenullableHaAvg[2.1e-17/4.3e-15]? H-alpha surface brightnessmW.m**-2.arcsec**-2phot.mag.sb;em.line.HalphadoublenullableF1.4GHz[-69/4920.2]? Integrated flux at frequency 1.4GHzuJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_F1.4GHz[0.1/84.7]? Error on F1.4GHzuJystat.errorfloatnullablealpha[-3/3]? Spectral index (G1)spect.indexfloatnullablee_alpha[0/29.3]? Error on alpha, 0 for points at alpha clip limits (G1)stat.error;pos.eq.rafloatnullableFint[-719/3983]? Flux at pivot frequency pFrequJyphot.flux.density;em.radiofloatnullablee_Fint[5/549]? Error on FintuJystat.errorfloatnullablepFreq[1.3/5.6]? Pivot frequency where signal-to-noise is maximizedGHzem.freqfloatnullableRflag[0/11] Radio detection flag (>8: most reliable matches) (G3)meta.codeintRName1Names of associated radio source(s) (G4)meta.id.assoccharRName2Names of associated radio source(s) (G4)meta.id.assoccharRName3Names of associated radio source(s) (G4)meta.id.assoccharJ/ApJS/241/37/table6Forced photometry of M33 X-ray sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintT11Name of Chandra X-ray source (1)meta.id;meta.mainintRAJ2000[1] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000[30] Degree of Declination (J2000)pos.eq.dec;meta.mainDiam[12/49.5] X-ray diameterpcpos.distancefloatTcts[4.6/163149] Total Chandra count ratect/sphot.count;em.X-raydoubleScts[-4.7/23332] Chandra count rate in soft band, 0.35-1.0keVct/sphot.count;em.X-rayfloatMcts[-2.7/97986] Chandra count rate in medium band, 1.0-2.0keVct/sphot.count;em.X-rayfloatHcts[-10.8/41832] Chandra count rate in hard band, 2.0-8.0keVct/sphot.count;em.X-rayfloatSNRyes: source is associated with SNRmeta.codecharRadyes: radio flux is greater than 4 sigmameta.codecharHaTot[-1.6e-14/4.6e-12] Integrated H-alpha fluxmW.m**-2phot.flux;em.line.HalphadoubleHaAvg[-2e-16/3e-14] H-alpha surface brightnessmW.m**-2.arcsec**-2phot.mag.sb;em.line.HalphadoubleF1.4GHz[-59/17632] Integrated flux at frequency 1.4GHzuJyphot.flux.density;em.radio.750-1500MHzfloate_F1.4GHz[0.1/53.3] Error on F1.4GHzuJystat.errorfloatalpha[-3/3] Spectral index (G1)spect.indexfloate_alpha[0/41.5] Error on alpha, 0 for points at alpha clip limits (G1)stat.error;pos.eq.rafloatFint[-91/14812] Flux at pivot frequency pFrequJyphot.flux.density;em.radiofloate_Fint[4/36] Error on FintuJystat.errorfloatpFreq[1.3/5.6] Pivot frequency where signal-to-noise is maximizedGHzem.freqfloatN[3/4] Number of frequency bands with data (G2)meta.numberintRflag[0/11] Radio detection flag (G3)meta.codeintRName1Names of associated radio source(s) (G4)meta.id.assoccharRName2Names of associated radio source(s) (G4)meta.id.assoccharRName3Names of associated radio source(s) (G4)meta.id.assoccharSimbadSimbad column added by the CDSmeta.ref.urlchar