J/other/Ser/189.ivo://CDS.VizieR/J/other/Ser/189.15CDSGalvin T.J.Filipovic M.D.2023-01-06T16:01:26Z2015-02-02T15:09:15ZCDS support team

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

cds-question@unistra.frgalaxiessupernovaeradio-sourcesWe present Data Release 2 of the Point Source Catalogue created from a series of previously constructed radio-continuum images of M31 at lambda=20cm (nu=1.4GHz) from archived VLA observations. In total, we identify a collection of 916 unique discrete radio sources across the field of M31. Comparing these detected sources to those listed by Gelfand et al. (2004ApJS..155...89G, Cat. J/ApJS/155/89) at lambda=92cm, the spectral index of 98 sources has been derived. The majority (73%) of these sources exhibit a spectral index of {alpha}<-0.6, indicating that their emission is predominantly non-thermal in nature, which is typical for background objects and Supernova Remnants (SNRs).2014SerAJ.189...15Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/Ser/189.15CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/155/89 : 325MHz radio survey in M31 (Gelfand+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/Ser/189.15https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/Ser/189.15http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/Ser/189.15https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/Ser/189.15https://vizier.iucaa.in/viz-bin/votable?-source=J/other/Ser/189.15http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/Ser/189.15GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/Ser/189.15/m31radio (*Integrated flux densities for sources at 20cm (table1 of the paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/Ser/189.15/m31radio?https://vizier.iucaa.in/viz-bin/conesearch/J/other/Ser/189.15/m31radio?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/Ser/189.15/m31radio?GETtext/xml+votable180.050000true9.19091740.7567780.0055555555555555566/2619 2622-2623 2666-2667 2705 2708-2710 2752-27532.159177702468126e-25 9.932213363424795e-25https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/Ser/189.15?format=asciiRadiodefaultJ/other/Ser/189.15/m31radio*Integrated flux densities for sources at 20cm (table1 of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintProjVLA project and segment code (1)instr.setupcharGrp[1/109]? Group identifier for common sources (2)meta.idintnullableNs[2/11]? The number of sources in group (2)meta.numberintnullableFavg[0.36/340]? The average flux for group (2)mJyphot.flux.density;em.radio.750-1500MHzfloatnullablee_Favg[0.27/234]? The error of average for a group (2)%stat.errorfloatnullableGFlux? Gelfand et al. (2004, Cat. J/ApJS/155/89) integrated flux density at 92cm, if availablemJyphot.flux.density;em.radio.200-400MHzfloatnullablee_GFlux[0.4/105]? GFlux error, if availablemJystat.errorfloatnullablealpha[-2.5/0.4]? Derived spectral index {alpha}, S_{nu}_{prop.to}{nu}^{alpha}^ (3)spect.indexfloatnullableG04Display the Gelfand et al. (2004, Cat. J/ApJS/155/89) datameta.ref.urlcharNameATCA name (JHHMMSS+DDMMSS)meta.id;meta.maincharNNumber of observations of this sourcemeta.numberintnullableRAJ2000Right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Declination (J2000.0)pos.eq.dec;meta.mainFlux[0.22/15270] Integrated flux density at 20cmmJyphot.flux.density;em.radio.750-1500MHzdouble