J/MNRAS/438/2839ivo://CDS.VizieR/J/MNRAS/438/2839doi:10.26093/cds/vizier.74382839CDSGreiss S.Steeghs D.Jonker P.G.Torres M.A.P.Maccarone T.J.,Hynes R.I.Britt C.T.Nelemans G.Gansicke B.T.2024-08-08T20:12:25Z2018-12-12T09:58:54ZCDS support team

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

cds-question@unistra.frsurveysmilky-way-galaxyx-ray-sourcesinfrared-sourcesinfrared-photometryWe report on the near-infrared matches, drawn from three surveys, to the 1640 unique X-ray sources detected by Chandra in the Galactic Bulge Survey (GBS). This survey targets faint X-ray sources in the bulge, with a particular focus on accreting compact objects. We present all viable counterpart candidates and associate a false alarm probability (FAP) to each near-infrared match in order to identify the most likely counterparts. The FAP takes into account a statistical study involving a chance alignment test, as well as considering the positional accuracy of the individual X-ray sources. We find that although the star density in the bulge is very high, ~90 per cent of our sources have an FAP<10 per cent, indicating that for most X-ray sources, viable near-infrared counterparts candidates can be identified. In addition to the FAP, we provide positional and photometric information for candidate counterparts to ~95 per cent of the GBS X-ray sources. This information in combination with optical photometry, spectroscopy and variability constraints will be crucial to characterize and classify secure counterparts.2014MNRAS.438.2839Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/438/2839CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/316 : UKIDSS-DR6 Galactic Plane Survey (Lucas+ 2012)II/348 : VISTA Variable in the Via Lactea Survey DR2 (Minniti+, 2017)J/ApJS/194/18 : The Galactic Bulge Survey: X-ray observations (Jonker+, 2011)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/438/2839https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/438/2839http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/438/2839https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/438/2839https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/438/2839http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/438/2839GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/438/2839/table4 (Table containing all NIR data and FAP of matches within R95)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/438/2839/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/438/2839/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/438/2839/table4?GETtext/xml+votable180.050000true267.6018333-29.03788890.0055555555555555565/7204 7212-7213 6/28805 28807 28814-28815 28820 28822-28823 28825 28828-28829 28836-28837 28839 28866-28867 28872-28873 28896 28898 28904https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/438/2839?format=asciiX-rayInfrareddefaultJ/MNRAS/438/2839/table4Table containing all NIR data and FAP of matches within R95e_Kmag? rms uncertainty on K magnitudemagstat.error;phot.mag;em.IR.KfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGBSGBS source name (CXNNNN, CXBNNNN)meta.id;meta.maincharRAJ2000GBS right ascension (J2000)pos.eq.ra;meta.mainDEJ2000GBS declination (J2000)pos.eq.dec;meta.mainRAI? NIR right ascension (J2000)pos.eq.ranullableDEI? NIR declination (J2000)pos.eq.decnullableOffset? Distance between GBS and NIR sourcesarcsecpos.angDistancedoublenullableJmag? J magnitude from NIR surveymagphot.mag;em.IR.Jfloatnullablee_Jmag? rms uncertainty on J magnitudemagstat.error;phot.mag;em.IR.JfloatnullableHmag? H magnitude from NIR surveymagphot.mag;em.IR.Hfloatnullablee_Hmag? rms uncertainty on H magnitudemagstat.error;phot.mag;em.IR.HfloatnullableKmag? K magnitude from NIR surveymagphot.mag;em.IR.KfloatnullableSurveyNIR survey (2MASS, UKIDSS or VVV)meta.notecharFAPfinal? False alarm probabilitystat.fit.goodnessdoublenullableCommentsComments (1)meta.notechar