J/A+A/434/483ivo://CDS.VizieR/J/A+A/434/483doi:10.26093/cds/vizier.34340483CDSPietsch W.Freyberg M.Haberl F.2007-06-26T13:11:25Z2007-06-26T13:06:56ZCDS support team

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

cds-question@unistra.frgalaxiesx-ray-sourcesIn an analysis of XMM archival observations of the bright Local Group spiral galaxy M 31 we study the population of X-ray sources (X-ray binaries, supernova remnants) down to a 0.2-4.5keV luminosity of 4.4x10^34^erg/s. EPIC hardness ratios and optical and radio information are used to distinguish between different source classes. The survey detects 856 sources in an area of 1.24 square degrees. We correlate our sources with earlier M 31 X-ray catalogues and use information from optical, infra-red and radio wavelengths. As sources within M 31 we detect 21 supernova remnants (SNR) and 23 SNR candidates, 18 supersoft source (SSS) candidates, 7 X-ray binaries (XRBs) and 9 XRB candidates, as well as 27 globular cluster sources (GlC) and 10 GlC candidates, which most likely are low mass XRBs within the GlC. Comparison to earlier X-ray surveys reveal transients not detected with XMM-Newton, which add to the number of M 31 XRBs. There are 567 sources classified as hard, which may either be XRBs or Crab-like SNRs in M 31 or background AGN. The number of 44 SNRs and candidates more than doubles the X-ray-detected SNRs. 22 sources are new SNR candidates in M 31 based on X-ray selection criteria. Another SNR candidate may be the first plerion detected outside the Galaxy and the Magellanic Clouds. On the other hand, six sources are foreground stars and 90 foreground star candidates, one is a BL Lac-type active galactic nucleus (AGN) and 36 are AGN candidates, one source coincides with the Local Group galaxy M 32, one with a background galaxy cluster (GCl) and another is a GCl candidate, all sources not connected to M31.2005A&A...434..483Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/434/483CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/144 : Brightest stars in the field of M31 (Berkhuijsen+ 1988)II/145 : Brightest stars in a M31 foreground field (Berkhuijsen+, 1988)B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2002)J/A+A/373/63 : M31 second ROSAT PSPC survey (Supper+, 2001)J/ApJ/577/738 : M31 Chandra X-ray point sources (Kong+, 2002)J/ApJ/578/114 : Chandra HRC source in M31 (Kaaret, 2002)J/A+A/426/11 : XMM-Newton survey of Local Group galaxy M 33 (Pietsch+ 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/434/483https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/434/483http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/434/483https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/434/483https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/434/483http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/434/483GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/434/483/table1 (log of archival M 31 observation overlapping with the optical D_25_ ellipse (proposal numbers 010927, 011257 and 015158))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/434/483/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/434/483/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/434/483/table1?GETtext/xml+votable180.050000true10.65083341.2827780.005555555555555556Cone search capability for table J/A+A/434/483/table2 (X-ray source catalogue of the XMM-Newton EPIC M 31 observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/434/483/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/434/483/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/434/483/table2?GETtext/xml+votable180.050000true9.736333340.58044440.0055555555555555566/2622-2623 2666-2667 2708-2709 2752https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/434/483?format=asciiX-raydefaultJ/A+A/434/483/table1log of archival M 31 observation overlapping with the optical D_25_ ellipse (proposal numbers 010927, 011257 and 015158)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldM31 field designationmeta.id;meta.maincharM31IDCode for the fieldobs.fieldcharprimaryObsID? Observation identification numbermeta.id;obscharObsDateObservation datetime.epoch;obsnullablen_ObsDateSecond day of observationmeta.notecharRAJ2000? Pointing direction right ascension, J2000pos.eq.ra;meta.mainnullableDEJ2000? Pointing direction declination, J2000pos.eq.dec;meta.mainnullableORA? Offset in right ascension (1)arcminpos.eq.ra;arith.difffloatnullableODE? Offset in declination (1)arcminpos.eq.dec;arith.difffloatnullablePNFilterEPIC PN filter (2)instr.bandpasscharPNExpT? PN exposition time after screening for high backgroundkstime.duration;obs.exposurefloatnullablePNExpTC? PN exposition time of colour imageksphot.color;obs.exposurefloatnullableM1FilterEPIC MOS1 filter (2)instr.bandpasscharM1ExpT? MOS1 exposition time after screening for high backgroundkstime.duration;obs.exposurefloatnullableM1ExpTC? MOS1 exposition time of colour imagekstime.duration;obs.exposurefloatnullableM2FilterEPIC MOS2 filter (2)instr.bandpasscharM2ExpT? MOS2 exposition time after screening for high backgroundkstime.duration;obs.exposurefloatnullableM2ExpTC? MOS2 exposition time of colour imagekstime.duration;obs.exposurefloatnullableJ/A+A/434/483/table2X-ray source catalogue of the XMM-Newton EPIC M 31 observations[PFH2005]Source Numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintM31IDCode of the detection field in which the source was entered in the catalogueobs.fieldcharRAJ2000Right Ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainPosErrPositional error (1)arcsecstat.error;posfloatLHSource detection likelihood (combined EPIC)stat.likelihood;instr.saturationdoubleCRateCombined EPIC count rate (2)ct/sphot.count;em.X-raydoublee_CRateError in CRatect/sstat.errorfloatCFluxCombined EPIC flux in erg/cm2/s (2)mW.m**-2phot.flux;em.X-raydoublee_CFluxError in CFluxmW.m**-2stat.errorfloatCHR1? Combined EPIC hardness ratio 1 (3)phot.flux;arith.ratiofloatnullablee_CHR1? Error in CHR1stat.errorfloatnullableCHR2? Combined EPIC hardness ratio 2 (3)phot.flux;arith.ratiofloatnullablee_CHR2? Error in CHR2stat.errorfloatnullableCHR3? Combined EPIC hardness ratio 3 (3)phot.flux;arith.ratiofloatnullablee_CHR3? Error in CHR3stat.errorfloatnullableCHR4? Combined EPIC hardness ratio 4 (3)phot.flux;arith.ratiofloatnullablee_CHR4? Error in CHR4stat.errorfloatnullableVALEPIC instruments contributing to source detection (4)meta.id;instrcharPNExpo? Exposure of EPIC pn instrumentksinstr;obs.exposurefloatnullablePNLH? EPIC pn source detection likelihoodstat.likelihooddoublenullablePNRate? EPIC pn count rate (2)ct/sphot.count;em.X-raydoublenullablee_PNRate? Error in PNRatect/sstat.errorfloatnullablePNFlux? EPIC pn flux in erg/cm^2^/s (2)mW.m**-2phot.flux;em.X-raydoublenullablee_PNFlux? Error in PNFluxmW.m**-2stat.errorfloatnullablePNHR1? EPIC pn hardness ratio 1 (3)phot.flux;arith.ratiofloatnullablee_PNHR1? Error in PNHR1stat.errorfloatnullablePNHR2? EPIC pn hardness ratio 2 (3)phot.flux;arith.ratiofloatnullablee_PNHR2? Error in PNHR2stat.errorfloatnullablePNHR3? EPIC pn hardness ratio 3 (3)phot.flux;arith.ratiofloatnullablee_PNHR3? Error in PNHR3stat.errorfloatnullablePNHR4? EPIC pn hardness ratio 4 (3)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 (2)ct/sphot.count;em.X-raydoublenullablee_M1Rate? Error in M1Ratect/sstat.errorfloatnullableM1Flux? EPIC MOS1 flux in erg/cm^2^/s (2)mW.m**-2phot.flux;em.X-raydoublenullablee_M1Flux? Error in M1FluxmW.m**-2stat.errorfloatnullableM1HR1? EPIC MOS1 hardness ratio 1 (3)phot.flux;arith.ratiofloatnullablee_M1HR1? Error in M1HR1stat.errorfloatnullableM1HR2? EPIC MOS1 hardness ratio 2 (3)phot.flux;arith.ratiofloatnullablee_M1HR2? Error in M1HR2stat.errorfloatnullableM1HR3? EPIC MOS1 hardness ratio 3 (3)phot.flux;arith.ratiofloatnullablee_M1HR3? Error in M1HR3stat.errorfloatnullableM1HR4? EPIC MOS1 hardness ratio 4 (3)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 (2)ct/sphot.count;em.X-raydoublenullablee_M2Rate? Error in M2Ratect/sstat.errorfloatnullableM2Flux? EPIC MOS2 flux in erg/cm^2^/s (2)mW.m**-2phot.flux;em.X-raydoublenullablee_M2Flux? Error in M2FluxmW.m**-2stat.errorfloatnullableM2HR1? EPIC MOS2 hardness ratio 1 (3)phot.flux;arith.ratiofloatnullablee_M2HR1? Error in M2HR1stat.errorfloatnullableM2HR2? EPIC MOS2 hardness ratio 2 (3)phot.flux;arith.ratiofloatnullablee_M2HR2? Error in M2HR2stat.errorfloatnullableM2HR3? EPIC MOS2 hardness ratio 3 (3)phot.flux;arith.ratiofloatnullablee_M2HR3? Error in M2HR3stat.errorfloatnullableM2HR4? EPIC MOS2 hardness ratio 4 (3)phot.flux;arith.ratiofloatnullablee_M2HR4? Error in M2HR4stat.errorfloatnullableXID? X-ray identification (5)meta.idcharUSNOB1.0? Name of brightest USNO-B1.0 source within search areameta.id.crosscharo_USNOB1.0? 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 X-ray-to-optical fluxesphot.flux;arith.ratiofloatnullableClass? Classification of X-ray source (6)src.classcharRemarks? Additional remarks (7)meta.notecharUSNO-BFind all USNO-B1 sources within 60"meta.ref.urlcharJ/A+A/434/483/refsReferencesRefReference codemeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar