J/MNRAS/466/163ivo://CDS.VizieR/J/MNRAS/466/163doi:10.26093/cds/vizier.74660163CDSWevers T.Jonker P.G.Nelemans G.Torres M.A.P.Groot P.J.Steeghs D.,Maccarone T.J.Hynes R.I.Heinke C.Britt C.2024-08-17T20:17:39Z2017-01-06T07:58:10ZCDS support team

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

cds-question@unistra.frsurveysemission-line-starsvisible-astronomysloan-photometryh-alpha-photometryWe present a catalogue of candidate Halpha emission and absorption line sources and blue objects in the Galactic Bulge Survey (GBS) region. We use a point source catalogue of the GBS fields (two strips of (lxb)=(6{deg}x1{deg}) centred at b=1.5{deg} above and below the Galactic centre), covering the magnitude range 16>=r'>=22.5. We utilize (r'-i', r'-Halpha) colour-colour diagrams to select Halpha emission and absorption line candidates, and also identify blue objects (compared to field stars) using the r'-i' colour index. We identify 1337 Halpha emission line candidates and 336 Halpha absorption line candidates. These catalogues likely contain a plethora of sources, ranging from active (binary) stars, early-type emission line objects, cataclysmic variables (CVs) and low-mass X-ray binaries (LMXBs) to background active galactic nuclei (AGN). The 389 blue objects we identify are likely systems containing a compact object, such as CVs, planetary nebulae and LMXBs. Hot subluminous dwarfs (sdO/B stars) are also expected to be found as blue outliers. Crossmatching our outliers with the GBS X-ray catalogue yields sixteen sources, including seven (magnetic) CVs and one qLMXB candidate among the emission line candidates, and one background AGN for the absorption line candidates. One of the blue outliers is a high state AM CVn system. Spectroscopic observations combined with the multi-wavelength coverage of this area, including X-ray, ultraviolet and (time-resolved) optical and infrared observations, can be used to further constrain the nature of individual sources.2017MNRAS.466..163Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/466/163CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/194/18 : Galactic Bulge Survey: X-ray observations (Jonker+, 2011)J/ApJS/210/18 : X-ray survey of the Galactic Bulge (CXOGBS) (Jonker+, 2014)J/MNRAS/458/4530 : Chandra Galactic Bulge Survey (Wevers+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/466/163https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/466/163http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/466/163https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/466/163https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/466/163http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/466/163GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/466/163/absorber (Absorption line sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/466/163/absorber?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/466/163/absorber?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/466/163/absorber?GETtext/xml+votable180.050000true267.26010111-31.5312650.005555555555555556Cone search capability for table J/MNRAS/466/163/bluesrc (Blue sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/466/163/bluesrc?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/466/163/bluesrc?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/466/163/bluesrc?GETtext/xml+votable180.050000true266.74197389-31.512563890.005555555555555556Cone search capability for table J/MNRAS/466/163/emitters (Emission line sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/466/163/emitters?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/466/163/emitters?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/466/163/emitters?GETtext/xml+votable180.050000true266.44522111-32.535651940.0055555555555555565/7204 7212-7213 6/28805 28807 28814-28815 28822-28823 28825 28828-28829 28836-28837 28839 28861 28866-28867 28872-28873 28876 28896 28898-28899 28904https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/466/163?format=asciiOpticaldefaultJ/MNRAS/466/163/absorberAbsorption line sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCGBSDisplay the CGBS data (Wevers et al., 2016, Cat. J/MNRAS/458/4530)meta.ref.urlcharIDObject number of the field on which the source was detected (1)meta.id;obs.fieldintCCD[1/8] CCD number (i.e. detector) on which the source was detected (2)meta.id;meta.mainintRAJ2000Right ascension of the source (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of the source (J2000)degpos.eq.dec;meta.mainr'magr'-band magnitude of the source in Vega magnitudesmagphot.mag;em.opt.Rfloate_r'magMeasurement error of the r-band magnitudemagstat.error;phot.mag;em.opt.Rfloati'magi'-band magnitude of the source in Vega magnitudesmagphot.mag;em.opt.Ifloate_i'magMeasurement error of the i-band magnitudemagstat.error;phot.mag;em.opt.IfloatHamagHalpha-band magnitude of the source in Vega magnitudesmagphot.flux;em.line.Halphafloate_HamagMeasurement error of the Halpha-band magnitudemagstat.error;phot.mag;em.IR.Hfloatr'-i'r'-i' colour index of the source (difference of r'mag and i'mag)magphot.color;em.opt.R;em.opt.Ifloatr'-Har'-Halpha colour index of the source (difference of r'mag and Hamag)magphot.color;em.opt.V;em.line.HalphafloatCatFrom CGBS survey (Wevers et al., 2016, Cat. J/MNRAS/458/4530)meta.ref.urlcharJ/MNRAS/466/163/bluesrcBlue sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCGBSDisplay the CGBS data (Wevers et al., 2016, Cat. J/MNRAS/458/4530)meta.ref.urlcharIDObject number of the field on which the source was detected (1)meta.id;obs.fieldintCCD[1/8] CCD number (i.e. detector) on which the source was detected (2)meta.id;meta.mainintRAJ2000Right ascension of the source (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of the source (J2000)degpos.eq.dec;meta.mainr'magr'-band magnitude of the source in Vega magnitudesmagphot.mag;em.opt.Rfloate_r'magMeasurement error of the r-band magnitudemagstat.error;phot.mag;em.opt.Rfloati'magi'-band magnitude of the source in Vega magnitudesmagphot.mag;em.opt.Ifloate_i'magMeasurement error of the i-band magnitudemagstat.error;phot.mag;em.opt.IfloatHamagHalpha-band magnitude of the source in Vega magnitudesmagphot.flux;em.line.Halphafloate_HamagMeasurement error of the Halpha-band magnitudemagstat.error;phot.mag;em.IR.Hfloatr'-i'r'-i' colour index of the source (difference of r'mag and i'mag)magphot.color;em.opt.R;em.opt.Ifloatr'-Har'-Halpha colour index of the source (difference of r'mag and Hamag)magphot.color;em.opt.V;em.line.HalphafloatCatFrom CGBS survey (Wevers et al., 2016, Cat. J/MNRAS/458/4530)meta.ref.urlcharJ/MNRAS/466/163/emittersEmission line sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCGBSDisplay the CGBS data (Wevers et al., 2016, Cat. J/MNRAS/458/4530)meta.ref.urlcharIDObject number of the field on which the source was detected (1)meta.id;obs.fieldintCCD[1/8] CCD number (i.e. detector) on which the source was detected (2)meta.id;meta.mainintRAJ2000Right ascension of the source (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of the source (J2000)degpos.eq.dec;meta.mainr'magr'-band magnitude of the source in Vega magnitudesmagphot.mag;em.opt.Rfloate_r'magMeasurement error of the r-band magnitudemagstat.error;phot.mag;em.opt.Rfloati'magi'-band magnitude of the source in Vega magnitudesmagphot.mag;em.opt.Ifloate_i'magMeasurement error of the i-band magnitudemagstat.error;phot.mag;em.opt.IfloatHamagHalpha-band magnitude of the source in Vega magnitudesmagphot.flux;em.line.Halphafloate_HamagMeasurement error of the Halpha-band magnitudemagstat.error;phot.mag;em.IR.Hfloatr'-i'r'-i' colour index of the source (difference of r'mag and i'mag)magphot.color;em.opt.R;em.opt.Ifloatr'-Har'-Halpha colour index of the source (difference of r'mag and Hamag)magphot.color;em.opt.V;em.line.HalphafloatCatFrom CGBS survey (Wevers et al., 2016, Cat. J/MNRAS/458/4530)meta.ref.urlchar