J/ApJ/883/90ivo://CDS.VizieR/J/ApJ/883/90doi:10.26093/cds/vizier.18830090CDSCheng Z.Li Z.Fang T.Li X.Xu X.2021-12-06T13:23:40Z2021-04-12T12:55:57ZCDS support team

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

cds-question@unistra.frglobular-star-clustersx-ray-sourcesUsing archival Chandra observations with a total effective exposure of 734ks, we derive an updated catalog of point sources in the massive globular cluster (GC) Terzan 5. Our catalog covers an area of 58.1arcmin^2^ (R<=4.3') with 489 X-ray sources, and more than 75% of these sources are first detected in this cluster. We find significant dips in the radial distribution profiles of X-ray sources in Terzan 5, with the projected distance and width of the distribution dips for bright (L_X_>~9.5x10^30^erg/s) X-ray sources larger than those of the faint (L_X_<~9.5x10^30^erg/s) sources. By fitting the radial distribution of the X-ray sources with a "generalized King model," we estimated an average mass of 1.48+/-0.11 and 1.27+/-0.13M_{sun}_ for the bright and faint X-ray sources, respectively. These results are in agreement with that observed in 47 Tuc, which may suggest a universal mass segregation effect for X-ray sources in GCs. Compared with 47Tuc, we show that the two-body relaxation timescale of Terzan 5 is much smaller, but its dynamical age is significantly younger than 47 Tuc. These features suggest that the evolution of Terzan 5 is not purely driven by two-body relaxation, and the tidal stripping effect also plays an important role in accelerating the dynamical evolution of this cluster.2019ApJ...883...90Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/883/90CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/195 : Globular Clusters in the Milky Way (Harris, 1996)VII/202 : Globular Clusters in the Milky Way (Harris, 1997)J/other/Sci/292.2290 : Chandra compact binaries in 47 Tuc (Grindlay+, 2001)J/ApJ/625/796 : X-ray sources in the globular cluster 47 Tuc (Heinke+, 2005)J/ApJ/651/1098 : Faint X-ray sources in Terzan 5 (Heinke+, 2006)J/ApJS/166/249 : Stellar dynamics & PMs in 47Tuc (McLaughlin+, 2006)J/AJ/133/1287 : JHK photometry of 24 Galactic GCs (Valenti+, 2007)J/ApJS/195/10 : The CDF-S survey: 4Ms source catalogs (Xue+, 2011)J/ApJ/766/136 : Stellar encounter rates in Galactic GCs (Bahramian+, 2013)J/ApJ/795/22 : Iron abundance of Terzan 5 stars (Massari+, 2014)J/ApJS/228/2 : Chandra Deep Field-South survey: 7Ms sources (Luo+, 2017)J/MNRAS/482/5138 : Galactic GC mean proper motions & veloc. (Baumgardt+, 2019)J/ApJ/876/59 : Chandra X-ray sources in 47 Tuc (Cheng+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/883/90https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/883/90http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/883/90https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/883/90https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/883/90http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/883/90GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/883/90/table2 (Main Chandra source catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/883/90/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/883/90/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/883/90/table2?GETtext/xml+votable180.050000true266.94774889-24.762933060.005555555555555556Cone search capability for table J/ApJ/883/90/table1 (Log of Chandra observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/883/90/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/883/90/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/883/90/table1?GETtext/xml+votable180.050000true267.0202-24.78990.0055555555555555566/28899 28905https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/883/90?format=asciiX-raydefaultJ/ApJ/883/90/table2Main Chandra source catalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/489] X-ray catalog sequence number; sorted by RAmeta.idintNameIAU designation (HHMMSS.ss+DDMMSS.s; J2000)meta.id;meta.maincharRAJ2000[266.9/267.1] Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-24.9/-24.7] Declination (J2000)degpos.eq.dec;meta.mainPosErr[0/0.4] The 1{sigma} positional uncertaintyarcsecstat.error;pos.posAngfloatR[1/257.5] Projected distance from cluster center (1)arcsecpos.angDistancefloatPB[0/0.004] Binomial no-source probabilitystat.fit.goodnessfloatCNetT[5/9737] Full (0.5-8keV) band source counts (aperture-corrected)ctphot.count;em.X-rayfloate_CNetT[0.9/9638] The 1{sigma} lower bound of CNetTctstat.errorfloatE_CNetT[9/9837] The 1{sigma} upper bound of CNetTctstat.error;stat.maxfloatCNetS[-3/3613] Soft (0.5-2keV) band source counts (aperture-corrected)ctphot.count;em.X-rayfloate_CNetS[0/3553]? The 1{sigma} lower bound of CNetSctstat.errorfloatnullableE_CNetS[1/3674]? The 1{sigma} upper bound of CNetSctstat.error;stat.maxfloatnullableCNetH[-4.3/6124] Hard (2-8keV) band source counts (aperture-corrected)ctphot.count;em.X-rayfloate_CNetH[0/6046]? The 1{sigma} lower bound of CNetHctstat.errorfloatnullableE_CNetH[1/6203]? The 1{sigma} upper bound of CNetHctstat.error;stat.maxfloatnullableFluxT[2.9e-8/5.1e-5] Full (0.5-8keV) band photon fluxph.cm**-2.s**-1phot.flux;em.X-raydoubleFluxS[-1.1e-8/1.3e-5] Soft (0.5-8keV) band photon fluxph.cm**-2.s**-1phot.flux;em.X-raydoubleFluxH[-3.4e-8/3.7e-5] Hard (0.5-8keV) band photon fluxph.cm**-2.s**-1phot.flux;em.X-raydoubleLumT[9.3e+29/1.6e+33] The 0.5-8.0keV band intrinsic luminosity (2)1e-07Wphys.luminosity;em.X-raydoubleLumS[2.8e+29/9.7e+32] The 0.5-2.0keV band intrinsic luminosity (2)1e-07Wphys.luminosity;em.X-raydoubleLumH[4e+29/1.1e+33] The 2.0-8.0keV band intrinsic luminosity (2)1e-07Wphys.luminosity;em.X-raydoubleNH[20.8/23.2] Absorption column densitylog(cm**-2)phys.columnDensityfloate_NH[20.3/23.1]? The 1{sigma} lower bound of NHlog(cm**-2)stat.errorfloatnullableE_NH[21/23.3]? The 1{sigma} upper bound of NHlog(cm**-2)stat.error;stat.maxfloatnullablePI[0.1/3.3] Photon Index of powerlaw modelspect.indexfloate_PI[0.1/3]? The 1{sigma} lower bound of PIstat.errorfloatnullableE_PI[0.4/3]? The 1{sigma} upper bound of PIstat.error;stat.maxfloatnullabledof[1179/1182] Cstatistic degrees of freedomstat.fit.dofintCStat[505/1096] Cstatistic values; using 1192 PHA binsstat.fit.paramintJ/ApJ/883/90/table1Log of Chandra observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintObsID[3798/18881] Chandra observation identifiermeta.id;obs.param;obsintDateDate of the observation (UT)time.epochnullableArraysChandra arrays (always ACIS-S)meta.id;instrcharLtime[13.8/84.2] Livetimekstime.duration;obs.exposurefloatRAJ2000Telescope optical pointing RA (J2000)degpos.eq.ra;meta.mainDEJ2000Telescope optical pointing DEC (J2000)degpos.eq.dec;meta.mainRoll[86/276] Roll angledeginstr.offsetfloatFtime[0.8/3.1] Frame timestime.epochfloatdelX[-0.9/0.7] Right ascension shift {delta}xpixpos.eq.ra;arith.difffloatdelY[-1.8/0.3] Declination shift {delta}ypixpos.eq.dec;arith.difffloatRot[-0.07/0.2] Rotation angledeginstr.paramfloatScale[0.998/1.002] Scale factor of wcs_match transformation matrixarith.factorfloat