J/A+A/480/599ivo://CDS.VizieR/J/A+A/480/599doi:10.26093/cds/vizier.34800599CDSStiele H.Pietsch W.Haberl F.Freyberg M.2008-05-01T14:30:15Z2008-05-01T14:28:33ZCDS support team

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

cds-question@unistra.frgalaxiesx-ray-sourcesWe present an extension to our XMM-Newton X-ray source catalogue of M 31, containing 39 newly found sources. In order to classify and identify more of the sources we search for X-ray time variability in XMM-Newton archival data the M31 centre field. As source list we use our extended catalogue based on observations covering the time span from June 2000 to July 2004. We then determine the flux or at least an upper limit at the source positions for each observation. Deriving the flux ratios for the different observations and searching for the maximum flux difference we determine variability factors. We also calculated the significance of the flux ratios. Using hardness ratios, X-ray variability and cross correlations with catalogues in the X-ray, optical, infrared and radio regimes, we detected three super soft source candidates, one supernova remnant and six supernova remnant candidates, one globular cluster candidate, three X-ray binaries and four X-ray binary candidates. Additionally we identified one foreground star candidate and classified fifteen sources with hard spectra, which may either be X-ray binaries or Crab-like supernova remnants in M31 or background active galactic nuclei. The remaining five sources stay unidentified or without classification. Based on the time variability results we suggest six sources, which were former classified as "hard", to be X-ray binary candidates. The classification of one source (XMMM31 J004236.7+411349) as supernova remnant, has to be rejected due to the distinct time variability we found. We now classify this source as a foreground star.2008A&A...480..599Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/480/599CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/426/11 : XMM-Newton survey of the Local Group galaxy M 33 (Pietsch+ 2004)J/A+A/434/483 : An XMM-Newton survey of M31 (Pietsch+ 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/480/599https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/480/599http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/480/599https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/480/599https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/480/599http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/480/599GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/480/599/table3 (X-ray source catalogue extension of the XMM-Newton EPIC M31 central observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/480/599/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/480/599/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/480/599/table3?GETtext/xml+votable180.050000true10.376166741.38786110.005555555555555556Cone search capability for table J/A+A/480/599/table5 (X-ray variability of the central sources in M31 detected in XMM-Newton EPIC observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/480/599/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/480/599/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/480/599/table5?GETtext/xml+votable180.050000true10.349541.250.0055555555555555566/2623 2708-2709https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/480/599?format=asciiX-raydefaultJ/A+A/480/599/table3X-ray source catalogue extension of the XMM-Newton EPIC M31 central observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[857/895] Source number (1)meta.id;meta.mainintM31IDM31 field identificationobs.fieldcharRAJ2000Right Ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.maine_Pos? Positional error (2)arcsecstat.errorfloatnullableLHSource detection likelihood (combined EPIC)stat.likelihood;instr.saturationdoubleCRateCombined EPIC count rate (G2)ct/sphot.count;em.X-raydoublee_CRateError in CRatect/sstat.errorfloatCFluxCombined EPIC flux in erg/cm2/s (G2)mW.m**-2phot.flux;em.X-raydoublee_CFluxError in CFluxmW.m**-2stat.errorfloatCHR1? Combined EPIC hardness ratio 1 (G3)phot.flux;arith.ratiofloatnullablee_CHR1? Error in CHR1stat.errorfloatnullableCHR2? Combined EPIC hardness ratio 2 (G3)phot.flux;arith.ratiofloatnullablee_CHR2? Error in CHR2stat.errorfloatnullableCHR3? Combined EPIC hardness ratio 3 (G3)phot.flux;arith.ratiofloatnullablee_CHR3? Error in CHR3stat.errorfloatnullableCHR4? Combined EPIC hardness ratio 4 (G3)phot.flux;arith.ratiofloatnullablee_CHR4? Error in CHR4stat.errorfloatnullableVALEPIC instruments contributing to source detection (G4)meta.id;instrcharPNExpo? Exposure of EPIC pn instrumentksinstr;obs.exposurefloatnullablePNLH? EPIC pn source detection likelihoodstat.likelihooddoublenullablePNRate? EPIC pn count rate (G2)ct/sphot.count;em.X-raydoublenullablee_PNRate? Error in PNRatect/sstat.errorfloatnullablePNFlux? EPIC pn flux in erg/cm^2^/s (G2)mW.m**-2phot.flux;em.X-raydoublenullablee_PNFlux? Error in PNFluxmW.m**-2stat.errorfloatnullablePNHR1? EPIC pn hardness ratio 1 (G3)phot.flux;arith.ratiofloatnullablee_PNHR1? Error in PNHR1stat.errorfloatnullablePNHR2? EPIC pn hardness ratio 2 (G3)phot.flux;arith.ratiofloatnullablee_PNHR2? Error in PNHR2stat.errorfloatnullablePNHR3? EPIC pn hardness ratio 3 (G3)phot.flux;arith.ratiofloatnullablee_PNHR3? Error in PNHR3stat.errorfloatnullablePNHR4? EPIC pn hardness ratio 4 (G3)phot.flux;arith.ratiofloatnullablee_PNHR4? Error in PNHR4stat.errorfloatnullableM1Expo? Exposure of EPIC MOS1 instrumentksinstr;obs.exposurefloatnullableM1LH? EPIC MOS1 source detection likelihoodstat.likelihooddoublenullableM1Rate? EPIC MOS1 count rate (G2)ct/sphot.count;em.X-raydoublenullablee_M1Rate? Error in M1Ratect/sstat.errorfloatnullableM1Flux? EPIC MOS1 flux in erg/cm^2^/s (G2)mW.m**-2phot.flux;em.X-raydoublenullablee_M1Flux? Error in M1FluxmW.m**-2stat.errorfloatnullableM1HR1? EPIC MOS1 hardness ratio 1 (G3)phot.flux;arith.ratiofloatnullablee_M1HR1? Error in M1HR1stat.errorfloatnullableM1HR2? EPIC MOS1 hardness ratio 2 (G3)phot.flux;arith.ratiofloatnullablee_M1HR2? Error in M1HR2stat.errorfloatnullableM1HR3? EPIC MOS1 hardness ratio 3 (G3)phot.flux;arith.ratiofloatnullablee_M1HR3? Error in M1HR3stat.errorfloatnullableM1HR4? EPIC MOS1 hardness ratio 4 (G3)phot.flux;arith.ratiofloatnullablee_M1HR4? Error in M1HR4stat.errorfloatnullableM2Expo? Exposure of EPIC MOS2 instrumentksinstr;obs.exposurefloatnullableM2LH? EPIC MOS2 source detection likelihoodstat.likelihooddoublenullableM2Rate? EPIC MOS2 count rate (G2)ct/sphot.count;em.X-raydoublenullablee_M2Rate? Error in M2Ratect/sstat.errorfloatnullableM2Flux? EPIC MOS2 flux in erg/cm^2^/s (G2)mW.m**-2phot.flux;em.X-raydoublenullablee_M2Flux? Error in M2FluxmW.m**-2stat.errorfloatnullableM2HR1? EPIC MOS2 hardness ratio 1 (G3)phot.flux;arith.ratiofloatnullablee_M2HR1? Error in M2HR1stat.errorfloatnullableM2HR2? EPIC MOS2 hardness ratio 2 (G3)phot.flux;arith.ratiofloatnullablee_M2HR2? Error in M2HR2stat.errorfloatnullableM2HR3? EPIC MOS2 hardness ratio 3 (G3)phot.flux;arith.ratiofloatnullablee_M2HR3? Error in M2HR3stat.errorfloatnullableM2HR4? EPIC MOS2 hardness ratio 4 (G3)phot.flux;arith.ratiofloatnullablee_M2HR4? Error in M2HR4stat.errorfloatnullableXID? X-ray identification (G5)meta.idcharUSNOB1.0? Name of brightest USNO-B1.0 source within search areameta.id.crosscharUSNOMul? Number of USNO-B1.0 correlationsmeta.numberintnullableUSNOdist? Distance of source USNO-B1.0arcsecpos.angDistancefloatnullableUSNOB2? B2 magnitude of source USNO-B1.0magphot.mag;em.opt.BfloatnullableUSNOR2? R2 magnitude of source USNO-B1.0magphot.mag;em.opt.RfloatnullableUSNOI? I magnitude of source USNO-B1.0magphot.mag;em.opt.Ifloatnullablelog(fX/fopt)? Logarithm of fX/foptphot.flux;arith.ratiofloatnullableClass? Classification of X-ray source (G6)src.classcharRemarks? Additional remarks, in refs.dat filesmeta.notecharXMMM31Source Name XMMM31 (Jhhmmss.s+ddmmss)meta.idcharJ/A+A/480/599/table5X-ray variability of the central sources in M31 detected in XMM-Newton EPIC observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSRCID[136/891] Source Number \linkRole{details of the source in Pietsch et al., 2005, Cat. J/A+A/434/483, or in table3} (1)meta.id;meta.mainintCFluxCombined EPIC flux in erg/cm2/s (G2)mW.m**-2phot.flux;em.X-raydoublee_CFluxError in CFluxmW.m**-2stat.errordoubleCHR1? Combined EPIC hardness ratio 1 (G3)phot.flux;arith.ratiofloatnullablee_CHR1? Error in CHR1stat.errorfloatnullableCHR2? Combined EPIC hardness ratio 2 (G3)phot.flux;arith.ratiofloatnullablee_CHR2? Error in CHR2stat.errorfloatnullableCHR3? Combined EPIC hardness ratio 3 (G3)phot.flux;arith.ratiofloatnullablee_CHR3? Error in CHR3stat.errorfloatnullableCHR4? Combined EPIC hardness ratio 4 (G3)phot.flux;arith.ratiofloatnullablee_CHR4? Error in CHR4stat.errorfloatnullableXID? X-ray identification (G5)meta.idcharClass? Classification of X-ray source (G6)src.classcharRemarks? Additional remarks, in refs.dat filemeta.notecharc1val? EPIC instruments contributing to source detection in observation c1 (G4)meta.id;instrcharc1Rate? EPIC count rate in observation c1 (G2)ct/sphot.count;em.X-raydoublenullablee_c1Rate? Error in c1Ratect/sstat.errordoublenullablec1Flux? EPIC flux in erg/cm2/s in observation c1 (G2)mW.m**-2phot.flux;em.X-raydoublenullablee_c1Flux? Error in c1FluxmW.m**-2stat.errordoublenullablec1HR1? EPIC hardness ratio 1 in observation c1 (G3)phot.flux;obsfloatnullablee_c1HR1? Error in c1HR1stat.errorfloatnullablec1HR2? EPIC hardness ratio 2 in observation c1 (G3)phot.flux;obsfloatnullablee_c1HR2? Error in c1HR2stat.errorfloatnullablec1HR3? EPIC hardness ratio 3 in observation c1 (G3)phot.flux;obsfloatnullablee_c1HR3? Error in c1HR3stat.errorfloatnullablec1HR4? EPIC hardness ratio 4 in observation c1 (G3)phot.flux;obsfloatnullablee_c1HR4? Error in c1HR4stat.errorfloatnullablec2val? EPIC instruments contributing to source detection in observation c2 (G4)meta.id;instrcharc2Rate? EPIC count rate in observation c2 (G2)ct/sphot.count;em.X-raydoublenullablee_c2Rate? Error in c2Ratect/sstat.errordoublenullablec2Flux? EPIC flux in erg/cm2/s in observation c2 (G2)mW.m**-2phot.flux;em.X-raydoublenullablee_c2Flux? Error in c2FluxmW.m**-2stat.errordoublenullablec2HR1? EPIC hardness ratio 1 in observation c2 (G3)phot.flux;obsfloatnullablee_c2HR1? Error in c2HR1stat.errorfloatnullablec2HR2? EPIC hardness ratio 2 in observation c2 (G3)phot.flux;obsfloatnullablee_c2HR2? Error in c2HR2stat.errorfloatnullablec2HR3? EPIC hardness ratio 3 in observation c2 (G3)phot.flux;obsfloatnullablee_c2HR3? Error in c2HR3stat.errorfloatnullablec2HR4? EPIC hardness ratio 4 in observation c2 (G3)phot.flux;obsfloatnullablee_c2HR4? Error in c2HR4stat.errorfloatnullablec3val? EPIC instruments contributing to source detection in observation c3 (G4)meta.id;instrcharc3Rate? EPIC count rate in observation c3 (G2)ct/sphot.count;em.X-raydoublenullablee_c3Rate? Error in c3Ratect/sstat.errordoublenullablec3Flux? EPIC flux in erg/cm2/s in observation c3 (G2)mW.m**-2phot.flux;em.X-raydoublenullablee_c3Flux? Error in c3FluxmW.m**-2stat.errordoublenullablec3HR1? EPIC hardness ratio 1 in observation c3 (G3)phot.flux;obsfloatnullablee_c3HR1? Error in c3HR1stat.errorfloatnullablec3HR2? EPIC hardness ratio 2 in observation c3 (G3)phot.flux;obsfloatnullablee_c3HR2? Error in c3HR2stat.errorfloatnullablec3HR3? EPIC hardness ratio 3 in observation c3 (G3)phot.flux;obsfloatnullablee_c3HR3? Error in c3HR3stat.errorfloatnullablec3HR4? EPIC hardness ratio 4 in observation c3 (G3)phot.flux;obsfloatnullablee_c3HR4? Error in c3HR4stat.errorfloatnullablen1val? EPIC instruments contributing to source detection in observation n1 (G4)meta.id;instrcharn1Rate? EPIC count rate in observation n1 (G2)ct/sphot.count;em.X-raydoublenullablee_n1Rate? Error in n1Ratect/sstat.errordoublenullablen1Flux? EPIC flux in erg/cm2/s in observation n1 (G2)mW.m**-2phot.flux;em.X-raydoublenullablee_n1Flux? Error in n1FluxmW.m**-2stat.errordoublenullablen1HR1? EPIC hardness ratio 1 in observation n1 (G3)phot.flux;obsfloatnullablee_n1HR1? Error in n1HR1stat.errorfloatnullablen1HR2? EPIC hardness ratio 2 in observation n1 (G3)phot.flux;obsfloatnullablee_n1HR2? Error in n1HR2stat.errorfloatnullablen1HR3? EPIC hardness ratio 3 in observation n1 (G3)phot.flux;obsfloatnullablee_n1HR3? Error in n1HR3stat.errorfloatnullablen1HR4? EPIC hardness ratio 4 in observation n1 (G3)phot.flux;obsfloatnullablee_n1HR4? Error in n1HR4stat.errorfloatnullablec4val? EPIC instruments contributing to source detection in observation c4 (G4)meta.id;instrcharc4Rate? EPIC count rate in observation c4 (G2)ct/sphot.count;em.X-raydoublenullablee_c4Rate? Error in c4Ratect/sstat.errordoublenullablec4Flux? EPIC flux in erg/cm2/s in observation c4 (G2)mW.m**-2phot.flux;em.X-raydoublenullablee_c4Flux? Error in c4FluxmW.m**-2stat.errordoublenullablec4HR1? EPIC hardness ratio 1 in observation c4 (G3)phot.flux;obsfloatnullablee_c4HR1? Error in c4HR1stat.errorfloatnullablec4HR2? EPIC hardness ratio 2 in observation c4 (G3)phot.flux;obsfloatnullablee_c4HR2? Error in c4HR2stat.errorfloatnullablec4HR3? EPIC hardness ratio 3 in observation c4 (G3)phot.flux;obsfloatnullablee_c4HR3? Error in c4HR3stat.errorfloatnullablec4HR4? EPIC hardness ratio 4 in observation c4 (G3)phot.flux;obsfloatnullablee_c4HR4? Error in c4HR4stat.errorfloatnullables1val? EPIC instruments contributing to source detection in observation s1 (G4)meta.id;instrchars1Rate? EPIC count rate in observation s1 (G2)ct/sphot.count;em.X-raydoublenullablee_s1Rate? Error in s1Ratect/sstat.errordoublenullables1Flux? EPIC flux in erg/cm2/s in observation s1 (G2)mW.m**-2phot.flux;em.X-raydoublenullablee_s1Flux? Error in s1FluxmW.m**-2stat.errordoublenullables1HR1? EPIC hardness ratio 1 in observation s1 (G3)phot.flux;obsfloatnullablee_s1HR1? Error in s1HR1stat.errorfloatnullables1HR2? EPIC hardness ratio 2 in observation s1 (G3)phot.flux;obsfloatnullablee_s1HR2? Error in s1HR2stat.errorfloatnullables1HR3? EPIC hardness ratio 3 in observation s1 (G3)phot.flux;obsfloatnullablee_s1HR3? Error in s1HR3stat.errorfloatnullables1HR4? EPIC hardness ratio 4 in observation s1 (G3)phot.flux;obsfloatnullablee_s1HR4? Error in s1HR4stat.errorfloatnullablebval? EPIC instruments contributing to source detection in observation b (G4)meta.id;instrcharbRate? EPIC count rate in observation b (G2)ct/sphot.count;em.X-raydoublenullablee_bRate? Error in bRatect/sstat.errordoublenullablebFlux? EPIC flux in erg/cm2/s in observation b (G2)mW.m**-2phot.flux;em.X-raydoublenullablee_bFlux? Error in bFluxmW.m**-2stat.errordoublenullablebHR1? EPIC hardness ratio 1 in observation b (G3)phot.flux;obsfloatnullablee_bHR1? Error in bHR1stat.errorfloatnullablebHR2? EPIC hardness ratio 2 in observation b (G3)phot.flux;obsfloatnullablee_bHR2? Error in bHR2stat.errorfloatnullablebHR3? EPIC hardness ratio 3 in observation b (G3)phot.flux;obsfloatnullablee_bHR3? Error in bHR3stat.errorfloatnullablebHR4? EPIC hardness ratio 4 in observation b (G3)phot.flux;obsfloatnullablee_bHR4? Error in bHR4stat.errorfloatnullablendetNumber of observations covering the sourcemeta.numberintsvarmaxMaximum of significance of variationstat.fit.goodnessfloatfvarmaxMaximum of flux ratiophot.flux;arith.ratiofloatnupperNumber of upper limitsmeta.numberintfmax? Maximum fluxmW.m**-2phot.flux;arith.ratiodoublenullablee_fmax? Error in fmaxmW.m**-2stat.errordoublenullableXMMM31Source Name XMMM31 (Jhhmmss.s+ddmmss)meta.idchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/A+A/480/599/refsReferencesRefReference codemeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBibCodeBibCodemeta.bib.bibcodecharNameAuthor's namemeta.bib.authorcharComCommentsmeta.notechar