J/A+A/575/A42ivo://CDS.VizieR/J/A+A/575/A42doi:10.26093/cds/vizier.35750042CDSGreiner J.Richter G.A.2017-11-06T12:23:12Z2015-02-19T08:55:40ZCDS support team

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

cds-question@unistra.frx-ray-sourcesvariable-starsastronomical-object-identificationThe optical identification of large number of X-ray sources such as those from the ROSAT All-Sky Survey is challenging with conventional spectroscopic follow-up observations. We investigate two ROSAT All-Sky Survey fields of size 10{deg}x10{deg} each, one at galactic latitude b=83{deg} (26 Com), the other at b=-5{deg} (gamma Sge), in order to optically identify the majority of sources. We used optical variability, among other more standard methods, as a means of identifying a large number of ROSAT All- Sky Survey sources. All objects fainter than about 12mag and brighter than about 17mag, in or near the error circle of the ROSAT positions, were tested for optical variability on hundreds of archival plates of the Sonneberg field patrol.2015A&A...575A..42Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/575/A42CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/xmm : XMM-Newton Observation Log (XMM-Newton Science Operation Center, 2014)IX/37 : XMM-Newton Serendipitous Source Catalogue (1XMM) (XMM-SSC, 2003)IX/41 : XMM-Newton Serendipitous Source Catalogue 2XMMi-DR3 (XMM-SSC, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/575/A42https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/575/A42http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/575/A42https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/575/A42https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/575/A42http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/575/A42GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/575/A42/table9 (Optical objects inside or near the error circles of the ROSAT positions in {gamma} Sge)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/575/A42/table9?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/575/A42/table9?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/575/A42/table9?GETtext/xml+votable180.050000true294.4312524.2611110.005555555555555556Cone search capability for table J/A+A/575/A42/table1 (Main X-ray data of the ROSAT sources in 26 Com)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/575/A42/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/575/A42/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/575/A42/table1?GETtext/xml+votable180.050000true188.48291726.0447220.005555555555555556Cone search capability for table J/A+A/575/A42/table2 (Main X-ray data of the ROSAT sources in {gamma} Sge)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/575/A42/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/575/A42/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/575/A42/table2?GETtext/xml+votable180.050000true294.42791724.2536110.005555555555555556Cone search capability for table J/A+A/575/A42/table8 (Optical objects inside or near the error circles of the ROSAT positions in 26 Com)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/575/A42/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/575/A42/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/575/A42/table8?GETtext/xml+votable180.050000true188.4862526.04250.0055555555555555565/3212 3214 3235 3245 3248 3250 6990-6991 7002-7003 7014 7020-7021 7023 7026-7028 7030 7032-7034 6/12826-12827 12837 12845-12847 12852 12854 12860-12862 12906 12928-12929 12932-12933 12938-12939 12944-12946 12948-12949 12954-12958 12960 12962 12964 12966 12969-12970 12972-12973 12976-12977 12979 12985 12987-12989 12991 12996 12998-12999 13005-13006 13016 13024 13028 13032 14353-14354 14361 27935 27949 27951 27955 27957-27959 27976 28002-28003 28024 28026-28027 28035 28037-28039 28041 28045-28050 28053-28055 28060 28062-28063 28068-28069 28071 28091 28098-28101 28103 28118-28119 28124 28126 28141 28143-28144 28146 28439 28480-28482 30684-30685 30687 30709 32086https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/575/A42?format=asciiX-raydefaultJ/A+A/575/A42/table9Optical objects inside or near the error circles of the ROSAT positions in {gamma} SgerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXseqRunning number of the X-ray sourcemeta.numberintm_Xseq[a-j] ID for multiple optical objectsmeta.code.multipcharRAJ2000? Right Ascension (J2000) (1)pos.eq.ra;meta.mainnullableDEJ2000? Declination (J2000) (1)pos.eq.dec;meta.mainnullableSep? Distance between X-ray centroid and objectarcsecpos;arith.diffintnullableNameBright star namemeta.id;meta.maincharVarC if constant or GCVS Name if variable (2)meta.idcharTypeSource type (3)meta.code;src.varcharSpTypeSpectral Type from Simbad (4)src.spTypecharBmag? USNO B magnitudemagphot.mag;em.opt.BfloatnullableVmag? USNO V magnitudemagphot.mag;em.opt.VfloatnullableRmag? USNO R magnitudemagphot.mag;em.opt.RfloatnullableAmplAmplitude of optical variabilitysrc.var.amplitude;em.optcharX/opt? log of X-ray to optical flux ratio (5)phot.flux;arith.ratiofloatnullableJ/A+A/575/A42/table1Main X-ray data of the ROSAT sources in 26 ComXseqRunning number of the X-ray sourcemeta.numberintprimaryRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.main1RXSROSAT All-sky Survey Name (IX/10, IX/29)meta.id;meta.maincharePos? 90% confidence error circlearcsecstat.error;stat.fit.paramintnullableCR[0.008/5.7] ROSAT PSPC count ratect/sphot.count;em.X-rayfloatHR1[-1/1] Hardness ratio 1 (1)phot.flux;arith.ratiofloate_HR1Hardness ratio 1 errorstat.errorfloatHR2[-1/1] Hardness ratio 2 (1)phot.flux;arith.ratiofloate_HR2Hardness ratio 2 errorstat.errorfloatFluxX-ray flux (in 10^-13^erg/cm^2^/s)1e-16W.m**-2phot.flux;em.X-rayfloatNcNumber of optical conterpartsmeta.numberintnullableID[a-h] Reference to counterpart in tables 8 and 9 (2)meta.id.crosscharCommComments for reference to counterpart in tables 8 and 9 (2)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/575/A42/table2Main X-ray data of the ROSAT sources in {gamma} Sge1RXSROSAT All-sky Survey Name (IX/10, IX/29)meta.id;meta.maincharXseqRunning number of the X-ray sourcemeta.numberintprimaryRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainePos? 90% confidence error circlearcsecstat.error;stat.fit.paramintnullableCR[0.008/5.7] ROSAT PSPC count ratect/sphot.count;em.X-rayfloatHR1[-1/1] Hardness ratio 1 (1)phot.flux;arith.ratiofloate_HR1Hardness ratio 1 errorstat.errorfloatHR2[-1/1] Hardness ratio 2 (1)phot.flux;arith.ratiofloate_HR2Hardness ratio 2 errorstat.errorfloatFluxX-ray flux (in 10^-13^erg/cm^2^/s)1e-16W.m**-2phot.flux;em.X-rayfloatNcNumber of optical conterpartsmeta.numberintnullableID[a-h] Reference to counterpart in tables 8 and 9 (2)meta.id.crosscharCommComments for reference to counterpart in tables 8 and 9 (2)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/575/A42/table8Optical objects inside or near the error circles of the ROSAT positions in 26 ComrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXseqRunning number of the X-ray sourcemeta.numberintm_Xseq[a-j] ID for multiple optical objectsmeta.code.multipcharRAJ2000? Right Ascension (J2000) (1)pos.eq.ra;meta.mainnullableDEJ2000? Declination (J2000) (1)pos.eq.dec;meta.mainnullableSep? Distance between X-ray centroid and objectarcsecpos;arith.diffintnullableNameBright star namemeta.id;meta.maincharVarC if constant or GCVS Name if variable (2)meta.idcharTypeSource type (3)meta.code;src.varcharSpTypeSpectral Type from Simbad (4)src.spTypecharBmag? USNO B magnitudemagphot.mag;em.opt.BfloatnullableVmag? USNO V magnitudemagphot.mag;em.opt.VfloatnullableRmag? USNO R magnitudemagphot.mag;em.opt.RfloatnullableAmplAmplitude of optical variabilitysrc.var.amplitude;em.optcharX/opt? log of X-ray to optical flux ratio (5)phot.flux;arith.ratiofloatnullable