J/ApJS/251/2ivo://CDS.VizieR/J/ApJS/251/2doi:10.26093/cds/vizier.22510002CDSMasini A.Hickox R.C.Carroll C.M.Aird J.Alexander D.M.Assef R.J.,Bower R.Brodwin M.Brown M.J.I.Chatterjee S.Chen C.-T.J.Dey A.,DiPompeo M.A.Duncan K.J.Eisenhardt P.R.M.Forman W.R.Gonzalez A.H.,Goulding A.D.Hainline K.N.Jannuzi B.T.Jones C.Kochanek C.S.,Kraft R.Lee K.-S.Miller E.D.Mullaney J.Myers A.D.Ptak A.,Stanford A.Stern D.Vikhlinin A.Wake D.A.Murray S.S.2021-07-05T08:13:09Z2021-03-01T13:33:05ZCDS support team

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

cds-question@unistra.frx-ray-sourcesastronomical-object-identificationinfrared-photometryredshiftedsurveysWe present a new, ambitious survey performed with the Chandra X-ray Observatory of the 9.3deg^2^ Bootes field of the NOAO Deep Wide-Field Survey. The wide field probes a statistically representative volume of the universe at high redshift. The Chandra Deep Wide-field Survey exploits the excellent sensitivity and angular resolution of Chandra over a wide area, combining 281 observations spanning 15yr, for a total exposure time of 3.4Ms, and detects 6891 X-ray point sources down to limiting fluxes of 4.7x10^-16^, 1.5x10^-16^, and 9x10^-16^erg/cm^2^/s in the 0.5-7, 0.5-2, and 2-7keV bands, respectively. The robustness and reliability of the detection strategy are validated through extensive, state-of-the-art simulations of the whole field. Accurate number counts, in good agreement with previous X-ray surveys, are derived thanks to the uniquely large number of point sources detected, which resolve 65.0%+/-12.8% of the cosmic X-ray background between 0.5 and 2keV and 81.0%+/-11.5% between 2 and 7keV. Exploiting the wealth of multiwavelength data available on the field, we assign redshifts to ~94% of the X-ray sources, estimate their obscuration, and derive absorption-corrected luminosities.2020ApJS..251....2Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/251/2CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2014)VIII/76 : Leiden/Argentine/Bonn (LAB) Survey of Galactic HI (Kalberla+ 2005)VIII/103 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012)VIII/95 : Herschel Multi-tiered Extragalactic Survey (Oliver+, 2012)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/AJ/123/1784 : 1.4 GHz imaging of the Bootes field (de Vries+, 2002)J/A+A/409/79 : HELLAS2XMM survey. IV. (Fiore+, 2003)J/AJ/127/213 : LALA Bootes field X-ray source catalog (Wang+, 2004)J/A+A/432/69 : Extremely Red Objects XMM-Newton observations (Brusa+, 2005)J/ApJS/161/9 : X-ray survey of the NDWFS Bootes field (Kenter+, 2005)J/MNRAS/356/568 : Deep Chandra survey of the Groth Strip (Nandra+, 2005)J/ApJ/641/140 : Opt. counterparts in the NDWFS Bootes field (Brand+, 2006)J/ApJS/169/401 : ChaMP X-ray point source catalog (Kim+, 2007)J/ApJ/701/428 : The Spitzer Deep, Wide-Field Survey (SDWFS) (Ashby+, 2009)J/ApJS/184/158 : Chandra COSMOS survey I. (Elvis+, 2009)J/ApJS/180/102 : AEGIS-X: Chandra deep survey (Laird+, 2009)J/ApJ/716/348 : The XMM-Newton survey of the COSMOS field (Brusa+, 2010)J/ApJ/716/530 : Mid-IR variability from the SDWFS (Kozlowski+, 2010)J/ApJ/727/20 : The Megamaser Cosmology Project (MCP). III. (Kuo+, 2011)J/ApJS/195/10 : The CDF-S survey: 4Ms source catalogs (Xue+, 2011)J/ApJS/200/8 : AGES: the AGN and Galaxy Evolution Survey (Kochanek+, 2012)J/A+A/549/A55 : GMRT 153MHz (2m) Radio Mini Survey I. (Williams+, 2013)J/ApJ/793/82 : LOFAR Bootes and 3C295 field sources (van Weeren+, 2014)J/MNRAS/450/1477 : VLA 352MHz image of the Bootes field. I. (Coppejans+, 2015)J/ApJS/220/10 : AEGIS-X Deep survey of EGS (AEGIS-XD) (Nandra+, 2015)J/ApJ/819/62 : The COSMOS-Legacy Survey (CLS) catalog (Civano+, 2016)J/ApJ/817/119 : Spitzer/IRAC variability in Bootes field (Kozlowski+, 2016)J/ApJ/817/172 : X-ray Observations of Stripe 82 (LaMassa+, 2016)J/ApJ/817/34 : C-COSMOS Legacy multiwavelength catalog (Marchesi+, 2016)J/ApJS/228/2 : Chandra Deep Field-South survey: 7Ms sources (Luo+, 2017)J/A+A/620/A74 : Bootes field LOFAR 150MHz imaging (Retana-Montenegro+, 2018)J/MNRAS/473/4937 : AllWISE ctp to ROSAT/2RXS & XMMSLEW2 (Salvato+, 2018)J/ApJ/877/5 : Chandra DF obscured & Compton-thick AGNs. I. (Li+, 2019)http://cda.harvard.edu/chaser/ : Chandra data archive home pagehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/251/2https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/251/2http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/251/2https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/251/2https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/251/2http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/251/2GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/251/2/tableb2 (The main source catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/251/2/tableb2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/251/2/tableb2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/251/2/tableb2?GETtext/xml+votable180.050000true218.093348132.30161130.005555555555555556Cone search capability for table J/ApJS/251/2/table1 (Chandra observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/251/2/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/251/2/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/251/2/table1?GETtext/xml+votable180.050000true216.40835.60.005555555555555556Cone search capability for table J/ApJS/251/2/tableb1 (Excluded XBootes sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/251/2/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/251/2/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/251/2/tableb1?GETtext/xml+votable180.050000true216.085660733.65609110.0055555555555555565/2286 2287 2628 2629 6/9135 9194 10501 10521 10524 105602.0616683193919197e-20 6.185923063528282e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/251/2?format=asciiX-rayInfrareddefaultJ/ApJS/251/2/tableb2The main source catalogE_Hnet[3/53]? Positive error on Hnet (E_NET_H_P)ctstat.error;stat.maxfloatnullableSr90[1/15] S-band exposure-weighted average r90 (R90_S) (1)arcsecphys.angSize;srcfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/6891] Sequential number of the X-ray source (ID)meta.id;meta.mainintRAJ2000[216/220] X-ray source right ascension (J2000) (RAJ2000)degpos.eq.ra;meta.mainDEJ2000[32.3/36] X-ray source declination (J2000) (DEJ2000)degpos.eq.dec;meta.mainePos[0.1/4.3] Positional error of the X-ray source (POS_ERR)arcsecstat.error;posfloatFprobF-band Poissonian probability that the source is a background fluctuation (PROB_F)stat.fit.goodnessfloatFr90[1/15] F-band exposure-weighted average r90 (R90_F) (1)arcsecphys.angSize;srcfloatFtot[0/13221] F-band total counts within a circle of radius r90 (TOT_F)ctphot.count;em.X-raydoubleFbkg[0.003/39.2] F-band background counts within a circle of radius r90 (BKG_F) (2)ctinstr.backgroundfloatFnet[2/13217] F-band net counts within a circle of radius r90 or 3{sigma} upper limit (NET_F) (3)ctphot.count;em.X-raydoubleE_Fnet[3/117]? Positive error on Fnet (E_NET_F_P)ctstat.error;stat.maxfloatnullablee_Fnet[1/115]? Negative error on Fnet (E_NET_F_N)ctstat.errorfloatnullableFexp[1265/171082] F-band total exposure (EXP_F)stime.expodoubleFCR[4.9e-5/0.3] F-band net count rate or 3{sigma} upper limit (CR_F) (3)ct/sphot.count;em.X-raydoubleE_FCR[3e-5/0.006]? Positive error on FCR (E_CR_F_P)ct/sstat.error;stat.maxdoublenullablee_FCR[2e-5/0.005]? Negative error on FCR (E_CR_F_N)ct/sstat.errordoublenullableFFlux[4.6e-16/3.3e-12] F-band (0.5-7keV) flux or 3{sigma} upper limit (FLUX_F) (3) (4)mW.m**-2phot.flux;em.X-raydoubleE_FFlux[2.9e-16/5e-14]? Positive error on FFlux (E_FLUX_F_P)mW.m**-2stat.error;stat.maxdoublenullablee_FFlux[1.9e-16/4.6e-14]? Negative error on FFlux (E_FLUX_F_N)mW.m**-2stat.errordoublenullableSprobS-band Poissonian probability that the source is a background fluctuation (PROB_S)stat.fit.goodnessfloatStot[0/10730] S-band total counts within a circle of radius r90 (TOT_S)ctphot.count;em.X-raydoubleSbkg[0.001/11.5] S-band background counts within a circle of radius r90 (BKG_S) (2)ctinstr.backgroundfloatSnet[1.9/10729] S-band net counts within a circle of radius r90 or 3{sigma} upper limit (NET_S) (3)ctphot.count;em.X-raydoubleE_Snet[3/105]? Positive error on Snet (E_NET_S_P)ctstat.error;stat.maxfloatnullablee_Snet[1/104]? Negative error on Snet (E_NET_S_N)ctstat.errorfloatnullableSepx[1267/170328] S-band total exposure (EXP_S)spos.angDistancedoubleSCR[3e-5/0.3] S-band net count rate or 3{sigma} upper limit (CR_S) (3)ct/sphot.count;em.X-raydoubleE_SCR[2.6e-5/0.005]? Positive error on SCR (E_CR_S_P)ct/sstat.error;stat.maxdoublenullablee_SCR[1.4e-5/0.005]? Negative error on SCR (E_CR_S_N)ct/sstat.errordoublenullableSFlux[1.4e-16/1.6e-12] S-band (0.5-2keV) flux or 3{sigma} upper limit (FLUX_S) (3) (4)mW.m**-2phot.flux;em.X-raydoubleE_SFlux[1e-16/2.2e-14]? Positive error on SFlux (E_FLUX_S_P)mW.m**-2stat.error;stat.maxdoublenullablee_SFlux[6.6e-17/2e-14]? Negative error on SFlux (E_FLUX_S_N)mW.m**-2stat.errordoublenullableHprobH-band Poissonian probability that the source is a background fluctuation (PROB_H)stat.fit.goodnessfloatHr90[1.8/16] H-band exposure-weighted average r90 (R90_H) (1)arcsecphys.angSize;srcfloatHtot[0/2592] H-band total counts within a circle of radius r90 (TOT_H)ctphot.count;em.X-rayfloatHbkg[0.005/31.5] H-band background counts within a circle of radius r90 (BKG_H) (2)ctinstr.backgroundfloatHnet[1.8/2588] H-band net counts within a circle of radius r90 or 3{sigma} upper limit (NET_H) (3)ctphot.count;em.X-rayfloate_Hnet[1/51]? Negative error on Hnet (E_NET_H_N)ctstat.errorfloatnullableHexp[1350/169367] H-band total exposure (EXP_H)stime.expodoubleHCR[3.7e-5/0.06] H-band net count rate or 3{sigma} upper limit (CR_H)ct/sphot.count;em.X-raydoubleE_HCR[2.9e-5/0.004]? Positive error on HCR (E_CR_H_P)ct/sstat.error;stat.maxdoublenullablee_HCR[1.8e-5/0.003]? Negative error on HCR (E_CR_H_N)ct/sstat.errordoublenullableHFlux[7.3e-16/1.1e-12] H-band (2-7keV) flux or 3{sigma} upper limit (FLUX_H) (3) (4)mW.m**-2phot.flux;em.X-raydoubleE_HFlux[5.8e-16/6.2e-14]? Positive error on Hflux (E_FLUX_H_P)mW.m**-2stat.error;stat.maxdoublenullableB_Skcor[0.004/1]? Maximal value of Skcor (K_S_MAX)stat.valuefloatnullablee_HFlux[3.7e-16/5.5e-14]? Negative error on Hflux (E_FLUX_H_N)mW.m**-2stat.errordoublenullableHR[-0.99/0.99] Hardness ratio computed with Bayesian estimation (BEHR; Park+ 2006ApJ...652..610P)phot.flux;arith.ratiofloatE_HR[0.006/0.8] Positive error on HR (E_HR_P)stat.error;stat.maxfloate_HR[0.007/0.9] Negative error on HR (E_HR_N)stat.errorfloatCXOXBName of the XBootes counterpart in Kenter+ (2005, J/ApJS/161/9) (XB_NAME)meta.id.crosscharSepK05[0/11.1]? Distance between the CDWFS source and its XBootes counterpart (XB_CDWFS_D)arcsecpos.angDistancedoublenullableNxb[0/2] Number of XBootes counterparts (XB_HOWMANY) (5)meta.numberintRANdeg[216.1/219.8]? Right ascension (J2000) for the I-band NDWFS counterpart (NDWFS_RAJ2000)degpos.eq.ranullableDENdeg[32.3/35.9]? Declination (J2000) for the I-band NDWFS counterpart (NDWFS_DEJ2000)degpos.eq.decnullableImag[12.4/99]? Vega I-band automatic magnitude ("MAG_AUTO") as computed by SExtractor (NDWFS_I_MAG_AUTO) (6)magphot.mag;em.opt.IdoublenullableRASdeg[216.1/219.9]? Right ascension (J2000) for [3.6]-band SDWFS counterpart (SDWFS_RAJ2000)degpos.eq.ranullableDESdeg[32.3/35.9]? Declination (J2000) for [3.6]-band SDWFS counterpart (SDWFS_DEJ2000)degpos.eq.decnullable3.6mag[7.7/20.2]? SDWFS Spitzer/IRAC 3.6um Vega magnitude (SDWFS_CH1_MAG)magphot.mag;em.IR.3-4umdoublenullable4.5mag[7.3/99]? SDWFS Spitzer/IRAC 4.5um Vega magnitude (SDWFS_CH2_MAG)magphot.mag;em.IR.4-8umdoublenullable5.8mag[6/99]? SDWFS Spitzer/IRAC 5.8um Vega magnitude (SDWFS_CH3_MAG)magphot.flux.density;em.IR.4-8umdoublenullable8mag[6.1/99]? SDWFS Spitzer/IRAC 8um Vega magnitude (SDWFS_CH4_MAG)magphot.flux.density;em.IR.8-15umdoublenullablee_3.6mag[0/0.4]? 3.6mag uncertainty (SDWFS_E_CH1_MAG)magstat.errordoublenullablee_4.5mag[0/99]? 4.5mag uncertainty (SDWFS_E_CH2_MAG)magstat.errordoublenullablee_5.8mag[0.0002/99]? 5.8mag uncertainty (SDWFS_E_CH3_MAG)magstat.errordoublenullablee_8mag[0.0002/99]? 8mag uncertainty (SDWFS_E_CH4_MAG)magstat.errordoublenullableSDWFS[-99/7] SDWFS flag (SDWFS_FLAG) (7)meta.codefloatSepN[0.006/9.7]? Separation between the CDWFS source and its NDWFS counterpart (NDWFS_CDWFS_D)arcsecpos.angDistancedoublenullableSepS[0.002/9.9]? Separation between the CDWFS source and its SDWFS counterpart (SDWFS_CDWFS_D)arcsecpos.angDistancedoublenullableSepSN[0.0002/1.8]? Separation between the NDWFS and SDWFS counterparts (SDWFS_NDWFS_D)arcsecpos.angDistancedoublenullableSepMax[0/9.9] Maximal separation between the CDWFS and its counterparts (MAX_D) (8)arcsecpos.angDistance;stat.maxdoubleNcat[1/3] Number of catalogs in which the source is contained, with 1 meaning only CDWFS and 3 meaning CDWFS, NDWFS, and SDWFSmeta.numberintPBay[-48.4/24] NWAY logarithm of the ratio between prior and posterior from distance matching (DIST_BAYES)stat.fit.goodnessdoublePPost[0/1] NWAY distance posterior probability comparing the association against no association (DIST_POST)stat.fit.goodnessdoubleBiasI[0.16/6.6] NWAY bias factors coming from the additional I-band magnitude information (BIAS_NDWFS_I_MAG_AUTO)stat.fit.paramdoubleBias3.6[0.18/4.7] NWAY bias factors coming from the additional [3.6]-band magnitude information (BIAS_SDWFS_CH1_MAG)stat.fit.paramdoublePsing[0/1] NWAY distance posterior probability comparing the association against no association after adding magnitude of the counterparts (P_SINGLE)stat.fit.goodnessdoublePany[0/1] NWAY p_any parameter (P_ANY) (9)stat.fit.goodnessdoublezsp[-8/4.8]? Spectroscopic redshift from the AGES catalog (Kochanek+ 2012, J/ApJS/200/8)src.redshiftdoublenullablezphot[0.002/7]? Photometric redshift (ZPH) (10)src.redshiftdoublenullableb_zphot[0/7]? Minimum of the primary peak above the 80% HPD CI zphot (ZPH_MIN)meta.notedoublenullableB_zphot[0/7]? Maximum of the primary peak above the 80% HPD CI zphot (ZPH_MAX)meta.notedoublenullableDeep[-99/1] "FLAG_DEEP" (1=good) (FLAG_DEEP) (11)meta.codeintD20[4078/2213084]? Index of the source in the Duncan+ (2020, submitted) catalog (ID_DUNCAN)meta.id.crossintnullablezbest[0/7]? Best redshift: spectroscopic when available, photometric otherwisesrc.redshift;pos.heliocentricdoublenullablef_zbest[-99/1] zbest flag (1=spectroscopic, 0=photometric, -99=no redshift available) (ZFLAG)meta.codefloatlogNH[20/24.7]? Logarithm of the column density (LOG_NH) (12)cm**-2phys.columnDensityfloatnullableE_logNH[0/3.7]? logNH positive uncertainty (E_LOG_NH_P)cm**-2stat.error;stat.maxfloatnullablee_logNH[0/3.6]? logNH negative uncertainty (E_LOG_NH_N)cm**-2stat.errorfloatnullableFkcor[0.2/1]? Correction factors k for the F-band (K_F) (13)arith.factor;phot.magfloatnullableb_Fkcor[0.002/1]? Minimal value of Fkcor (K_F_MIN)stat.value;stat.minfloatnullableB_Fkcor[0.2/1]? Maximal value of Fkcor (K_F_MAX)stat.valuefloatnullableSkcor[0.001/1]? Correction factors k for the S-band (K_S) (13)arith.factor;phot.magfloatnullableb_Skcor[0/1]? Minimal value of Skcor (K_S_MIN)stat.value;stat.minfloatnullableHkcor[0.3/1]? Correction factors k for the H-band (K_H) (13)arith.factor;phot.magfloatnullableb_Hkcor[0.004/1]? Minimal value of Hkcor (K_H_MIN)stat.value;stat.minfloatnullableB_Hkcor[0.4/1]? Maximal value of Hkcor (K_H_MAX)stat.valuefloatnullableFLum[4.8e+37/1.2e+48]? Deabsorbed rest-frame luminosities in the F-band (0.5-7keV) (LINT_F) (14)1e-07Wphys.luminosity;em.X-raydoublenullableSLum[1.9e+37/5.6e+47]? Deabsorbed rest-frame luminosities in the S-band (0.5-2keV) (LINT_S) (14)1e-07Wphys.luminosity;em.X-raydoublenullableHLum[8.7e+37/3.9e+47]? Deabsorbed rest-frame luminosities in the H-band (2-7keV) (LINT_H) (14)1e-07Wphys.luminosity;em.X-raydoublenullableL2-10[1.1e+38/5.1e+47]? Deabsorbed rest-frame luminosity in the 2-10keV band (LINT_2-10) (15)1e-07Wphys.luminosity;em.X-raydoublenullableAGESDisplay data from Kochanek+, 2012, J/ApJS/200/8, within 3"meta.ref.urlintnullableSCatDisplay data from Kozlowski+, 2010, J/ApJ/716/530 and 2016, J/ApJ/817/119, within 3"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJS/251/2/table1Chandra observationsCycle[3/18] Cycle numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintobsID[3130/19781] Chandra observation identifiermeta.id;obs.param;obsintRAJ2000[216.3/219.8] Right ascension (J2000) (RA_PNT)degpos.eq.ra;meta.mainDEJ2000[32.4/35.8] Declination (J2000) (DEC_PNT)degpos.eq.dec;meta.mainRoll[0.2/358] Roll angle (ROLL_ANGLE)instr.offsetfloatExp[4.2/119.9] Exposure time (EXPOSURE)kstime.duration;obs.exposurefloatMJD[52380.1/58314.1] Modified Julian Datedtime.epochfloatJ/ApJS/251/2/tableb1Excluded XBootes sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCXOXBName of the source (JHHMMSS.s+DDMMSS)meta.id;meta.maincharRAJ2000[216/219.8] Right ascension (J2000) (RA)degpos.eq.ra;meta.mainDEJ2000[32.3/35.9] Declination (J2000) (DEC)degpos.eq.dec;meta.mainFprob[2.4e-5/1] F-band Poissonian probability that the source is a background fluctuation (PROB_F)stat.fit.goodnessdoubleFr90[1/15.7] F-band exposure-weighted average r90 (R90_F) (1)arcsecphys.angSize;srcfloatFtot[0/30] F-band total counts within a circle of radius r90 (TOT_F)ctphot.count;em.X-rayfloatFbkg[0.016/22.4] F-band background counts within a circle of radius r90 (BKG_F)ctinstr.backgroundfloatFexp[1821/98605] Full (0.5-7keV) exposure time (EXP_F)stime.expofloatSprob[3e-5/1] S-band Poissonian probability that the source is a background fluctuation (PROB_S)stat.fit.goodnessdoubleSr90[1/15.7] S-band exposure-weighted average r90 (R90_S) (1)arcsecphys.angSize;srcfloatStot[0/11] S-band total counts within a circle of radius r90 (TOT_S)ctphot.count;em.X-rayfloatSbkg[0.0046/6.4] S-band background counts within a circle of radius r90 (BKG_S)ctinstr.backgroundfloatSexp[1746/94126] Soft (0.5-2keV) exposure time (EXP_S)stime.expofloatHprob[4.7e-5/1] H-band Poissonian probability that the source is a background fluctuation (PROB_H)stat.fit.goodnessdoubleHr90[1.8/16.5] H-band exposure-weighted average r90 (R90_H) (1)arcsecphys.angSize;srcfloatHtot[0/24] H-band total counts within a circle of radius r90 (TOT_H)ctphot.count;em.X-rayfloatHbkg[0.036/18.2] H-band background counts within a circle of radius r90 (BKG_H)ctinstr.backgroundfloatHexp[1837/100125] Hard (2-7keV) exposure time (EXP_H)stime.expodoubleSimbadSimbad column added by the CDSmeta.ref.urlchar