J/ApJS/212/13ivo://CDS.VizieR/J/ApJS/212/13doi:10.26093/cds/vizier.22120013CDSAnderson G.E.Gaensler B.M.Kaplan D.L.Slane P.O.Muno M.P.,Posselt B.Hong J.Murray S.S.Steeghs D.T.H.Brogan C.L.Drake J.J.,Farrell S.A.Benjamin R.A.Chakrabarty D.Drew J.E.Finley J.P.,Grindlay J.E.Lazio T.J.W.Lee J.C.Mauerhan J.C.van Kerkwijk M.H.2021-08-04T12:50:39Z2014-07-09T13:19:23ZCDS support team

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

cds-question@unistra.frx-ray-sourcesastronomical-object-identificationinfrared-photometrysurveysgalaxy-planesmilky-way-galaxyWe present the Chasing the Identification of ASCA Galactic Objects (ChIcAGO) survey, which is designed to identify the unknown X-ray sources discovered during the ASCA Galactic Plane Survey (AGPS). Little is known about most of the AGPS sources, especially those that emit primarily in hard X-rays (2-10keV) within the F_x_~10^-13^ to 10^-11^erg/cm2/s X-ray flux range. In ChIcAGO, the subarcsecond localization capabilities of Chandra have been combined with a detailed multiwavelength follow-up program, with the ultimate goal of classifying the >100 unidentified sources in the AGPS. Overall to date, 93 unidentified AGPS sources have been observed with Chandra as part of the ChIcAGO survey. A total of 253 X-ray point sources have been detected in these Chandra observations within 3' of the original ASCA positions. We have identified infrared and optical counterparts to the majority of these sources, using both new observations and catalogs from existing Galactic plane surveys. X-ray and infrared population statistics for the X-ray point sources detected in the Chandra observations reveal that the primary populations of Galactic plane X-ray sources that emit in the F_x_~10^-13^ to 10^-11^ erg/cm2/s flux range are active stellar coronae, massive stars with strong stellar winds that are possibly in colliding wind binaries, X-ray binaries, and magnetars. There is also another primary population that is still unidentified but, on the basis of its X-ray and infrared properties, likely comprises partly Galactic sources and partly active galactic nuclei.2014ApJS..212...13Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/212/13CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2014)IX/45 : The Chandra Source Catalog, Release 1.1 (Evans+, 2012)IX/41 : XMM-Newton Serendipitous Source Catalogue 2XMMi-DR3 (XMM-SSC, 2010)II/293 : GLIMPSE Source Catalog (I + II + 3D) (IPAC 2008)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)I/284 : The USNO-B1.0 Catalog (Monet+ 2003)VI/117 : Observation Log from ASCA (PLAIN Center, 2001)VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+, 1998)III/205 : H-alpha Stars in Northern Milky Way (Kohoutek+, 1997)J/ApJ/701/811 : Chandra observations of INTEGRAL sources (Tomsick+, 2009)J/A+A/505/405 : A catalogue of Spitzer dark clouds (Peretto+, 2009)J/AJ/131/2525 : MAGPIS 20cm survey (Helfand+, 2006)J/A+A/460/695 : Search for Associations Containing Young stars (Torres+, 2006)J/ApJ/607/904 : Chandra obs. of Trifid nebula (Rho+, 2004)J/PASJ/56/965 : X-ray properties of ASCA objects (Fukazawa+, 2004)J/ApJS/134/77 : ASCA Galactic Plane Survey faint X-ray sources (Sugizak+, 2001)J/ApJ/488/224 : 4.85 GHz fluxes of H II regions (Kuchar+, 1997)J/A+AS/118/329 : MOST supernova remnant catalogue (MSC) (Whiteoak+, 1996)http://irsa.ipac.caltech.edu/data/SPITZER/GLIMPSE/ : GLIMPSE Spitzer datahttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/212/13https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/212/13http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/212/13https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/212/13https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/212/13http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/212/13GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/212/13/table1 (ChIcAGO MAP X-ray Results, including the position, position errors, net counts and quantile analysis values for each ChIcAGO source)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/212/13/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/212/13/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/212/13/table1?GETtext/xml+votable180.050000true217.9590833-60.36897220.0055555555555555566/14352 14353 14358 14402 28812 28897 28900 29091 29100 29115 29118 29504 29505 29510 29523 29529 29532 29533 29535 30244 30256 30259 30262 30319 30330 30601 30604 30605 30607 41770 41772 41773 41777 41778 41780 41805 41810 41811 41814 41815 41816 42172 42173 42214 42215 42226 42379 42381 42382 42383 42392 42393 42396 42397 42445 42450 42454 42460 424962.483060040379131e-20 1.7798557115773645e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/212/13?format=asciiX-rayInfrareddefaultJ/ApJS/212/13/table9Radio counterparts to ChIcAGO sourcesChIChIcAGO identifier(s) (1)meta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSurveyRadio Survey or observations (2)spect.dopplerVeloc.radiocharRadioRadio source identifiermeta.id.assoccharTypeRadio source type (3)src.classcharLoc[ACKL] Location (4)meta.codecharRefReference(s) (see refs.dat file) (5)meta.ref;pos.framecharJ/ApJS/212/13/table7Likely optical and infrared counterparts of secondary (<20 X-ray counts) ChIcAGO SourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintChIChIcAGO identifiermeta.id;meta.maincharUSNOUSNO-B1.0 identifier (Cat. I/284)meta.id.crosscharUOff[0.03/1.2]? ChIcAGO and USNO positional offsetarcsecpos.angDistancefloatnullable2MASS2MASS identifier; 2MASS J (Cat. II/246)meta.id.crosschar2Off[0.08/1]? ChIcAGO and 2MASS positional offsetarcsecpos.angDistancefloatnullableSSTGLMGLIMPSE identifier (Cat. II/293)meta.id.crosscharf_SSTGLM[*] Source from GLIMPSE Archive (1)meta.codecharGOff[0.02/1.2]? ChIcAGO & GLIMPSE positional offsetarcsecpos.angDistancefloatnullableJ/ApJS/212/13/table12Confirmed and tentative identifications of the AGPS sources, including both literature and ChIcAGO survey identificationsTypeSource type (2)src.classrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAXJAGPS identifier (AX JHHMMSS+DDMM)meta.idcharChIChIcAGO identifier (1)meta.id;meta.maincharANameMost commonly used identifier(s)meta.idcharRefReference(s) (see refs.dat file) (3)meta.ref;pos.framecharf_RefSource identified in J/ApJS/134/77 (4)meta.codecharFlagSource type flag (5)meta.code.errorcharJ/ApJS/212/13/table1ChIcAGO MAP X-ray Results, including the position, position errors, net counts and quantile analysis values for each ChIcAGO sourcerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintAXJAGPS source identifier (AX JHHMMSS+DDMM) (<AX JHHMM.m+DDMM> in Simbad)meta.idcharf_AXJ[n] n: No source detected by Chandrameta.codecharObsIDChandra observation identification numbermeta.id;obsintDateDate of the observationtime.epochnullableInstChandra instrument used (ACIS-S or HRC-I)instr.setupcharExp[0.9/10.1] Exposure timekstime.duration;obs.exposurefloatChIChIcAGO identifier (JHHMMSS+DDMM_NN)meta.id;meta.maincharprimaryf_ChI[d*] Unreliable source (1)meta.codecharO/IRmeta.ref.urlcharNrNumber of radio counterparts (table9)meta.ref.urlintnullableNidNumber of confirmed and tentative identifications (table12)meta.ref.urlintnullableRAJ2000? Hour of Right Ascension (J2000) (2)pos.eq.ra;meta.mainnullableDEJ2000? Degree of Declination (J2000) (2)pos.eq.dec;meta.mainnullableOffset[0.1/3.1]? Offset from ASCA position (3)arcminpos.angDistancefloatnullableePosw? Wav positional error (4)arcsecstat.error;posfloatnullableePos? Total positional error (4)arcsecstat.error;posfloatnullableNC.f[2.6/326]? Net 0.3-8 keV full band counts (5)ctphot.count;em.X-rayfloatnullablee_NC.f? Lower Uncertainty in NC.fctstat.errorfloatnullableE_NC.f? Upper uncertainty in NC.fctstat.error;stat.maxfloatnullableNC.s[0/280]? Net soft 0.5-2 keV band counts (5)ctphot.count;em.X-rayfloatnullablee_NC.s? Lower uncertainty in NC.sctstat.errorfloatnullableE_NC.s? Upper uncertainty in NC.sctstat.error;stat.maxfloatnullableNC.h[0/182]? Net hard 2-8 keV band counts (5)ctphot.count;em.X-rayfloatnullablee_NC.h? Lower uncertainty in NC.hctstat.errorfloatnullableE_NC.h? Upper uncertainty in NC.hctstat.error;stat.maxfloatnullableE50[0.6/7]? Median energy of the photons detected in 0.3-8 keV bandkeVem.energyfloatnullablee_E50? Uncertainty in E50keVstat.errorfloatnullableQR[0.5/3]? Quartile ratio E_25_/E_75_ (6)stat.fit.paramfloatnullablee_QR? Uncertainty in QRstat.errorfloatnullableCXOChandra source catalog (CSC) identifier (7)meta.id.crosschar2XMMi2XMMi-DR3 identifier (8)meta.id.crosscharJ/ApJS/212/13/table2ChIcAGO sources with >20 X-ray counts and their infrared propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintChIChIcAGO identifier (1)meta.id;meta.maincharn_2MASSNIR data code (2)meta.notecharnullable2MASS2MASS identifier; 2MASS J (1)meta.id.crosscharl_JmagLimit flag on Jmagmeta.code.errorcharJmag[7/22]? The J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag[0/0.5]? Uncertainty in Jmagmagstat.error;phot.magfloatnullablel_HmagLimit flag on Hmagmeta.code.errorcharHmag[5/21]? The H band magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag[0/0.4]? Uncertainty in Hmagmagstat.error;phot.magfloatnullablel_KmagLimit flag on Kmagmeta.code.errorcharKmag[4/19]? The K band magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag[0/0.5]? Uncertainty in Kmagmagstat.error;phot.magfloatnullableDate? Date of PANIC observationtime.epochnullableDay? Second day of observationtime.epoch;obsintnullableSSTGLMGLIMPSE (II/293) identifier; SSTGLMC G (1)meta.id.crosschar[3.6][6.7/14.4]? GLIMPSE 3.6um band magnitudemagphot.mag;em.IR.3-4umfloatnullablee_[3.6][0.03/0.2]? Uncertainty in [3.6]magstat.errorfloatnullablef_[3.6][d] source in Archive for [3.6] (3)meta.codechar[4.5][6.3/14.1]? GLIMPSE 4.5um band magnitudemagphot.mag;em.IR.4-8umfloatnullablee_[4.5][0.04/0.2]? Uncertainty in [4.5]magstat.errorfloatnullablef_[4.5][d] source in Archive for [4.5] (3)meta.codechar[5.8][5.4/12.5]? GLIMPSE 5.8um band magnitudemagphot.flux.density;em.IR.4-8umfloatnullablee_[5.8]? Uncertainty in [5.8]magstat.errorfloatnullablef_[5.8][d] source in Archive for [5.8] (3)meta.codechar[8.0][5.3/11.8]? GLIMPSE 8.0um band magnitudemagphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? Uncertainty in [8.0]magstat.errorfloatnullablef_[8.0][d] source in Archive for [8.0] (3)meta.codecharJ/ApJS/212/13/table5Properties of optical counterparts, where they exist, for all ChIcAGO sources with >20 X-ray countsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintChIChIcAGO identifier (JHHMMss+DDMM_N)meta.id;meta.maincharUSNOUSNO-B1.0 identifiermeta.id.crosscharOFlagOptical data source flag(s) (1)meta.idcharl_BmagLimit flag on Bmagmeta.code.errorcharBmag[9.63/23.5]? B-band magnitude (2)magphot.mag;em.opt.Bfloatnullablee_Bmag[0.3/0.3]? Bmag uncertainty (2)magstat.error;phot.magfloatnullablel_VmagLimit flag on Vmagmeta.code.errorcharVmag[19.73/25]? V-band magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag[0.03/0.5]? Vmag uncertaintymagstat.error;phot.magfloatnullablel_RmagLimit flag on Rmagmeta.code.errorcharRmag[9.08/25]? R-band magnitude (2)magphot.mag;em.opt.Rfloatnullablee_Rmag[0.03/0.3]? Rmag uncertainty (2)magstat.error;phot.magfloatnullablel_ImagLimit flag on Imagmeta.code.errorcharImag[8.85/23.4]? I-band magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag[0.03/0.3]? Imag uncertaintymagstat.error;phot.magfloatnullableDateDate(s) of the MagIC and IMACS observationstime.epochcharJ/ApJS/212/13/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference codemeta.noteintBibCodeBibcodemeta.bib.bibcodecharAutAuthor's name(s)meta.bib.authorcharCommCommentmeta.notechar