J/ApJ/689/983ivo://CDS.VizieR/J/ApJ/689/983doi:10.26093/cds/vizier.16890983CDSHumphrey P.J.Buote D.A.2017-11-29T11:48:03Z2011-02-16T07:44:49ZCDS support team

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

cds-question@unistra.frmetallicitygalaxiesvisible-astronomyx-ray-binary-starsWe present a Chandra survey of LMXBs in 24 early-type galaxies. Correcting for detection incompleteness, the X-ray luminosity function (XLF) of each galaxy is consistent with a power law with negative logarithmic differential slope, {beta}~2.0. However, {beta} strongly correlates with incompleteness, indicating the XLF flattens at low-L_X_. Although the XLFs are similar, we find evidence of some variation between galaxies. The high-L_X_ XLF slope does not correlate with age, but may correlate with [{alpha}/Fe]. Considering only LMXBs with L_X_>10^37^ergs/s, matching the LMXBs with globular clusters (GCs) identified in HST observations of 19 of the galaxies, we find the probability a GC hosts an LMXB is proportional to L^{alpha}^_GC_Z^{gamma}^_Fe_ where {alpha}=1.01+/-0.19 and {gamma}=0.33+/-0.11. The spatial distribution of LMXBs resembles that of GCs, and the specific frequency of LMXBs is proportional to the GC specific luminosity, consistent with the hypothesis that all LMXBs form in GCs.2008ApJ...689..983Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/689/983CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-)VII/176 : Photometry and Spectroscopy of Elliptical Galaxies (Faber+ 1989)VII/155 : Third Reference Cat. of Bright Galaxies (RC3) (de Vaucouleurs+ 1991)J/ApJ/599/218 : Chandra LMXB in NGC 4365 and NGC 4382 (Sivakoff+, 2003)J/ApJ/586/814 : NGC 4472 Chandra/HST study (Maccarone+, 2003)J/ApJ/600/729 : Chandra LMXB in NGC 4649 (Randall+, 2004)J/ApJ/612/848 : Chandra LMXB in NGC 1332 (Humphrey+, 2004)J/ApJ/690/512 : LMXBs and GCs in early-type galaxies. II. (Humphrey 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/689/983https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/689/983http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/689/983https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/689/983https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/689/983http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/689/983GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/689/983/table1 (Target list and observation details)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/689/983/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/689/983/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/689/983/table1?GETtext/xml+votable180.050000true204.1627208-33.96591670.005555555555555556Cone search capability for table J/ApJ/689/983/table6 (LMXB Source lists)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/689/983/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/689/983/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/689/983/table6?GETtext/xml+votable180.050000true204.159167-33.9652780.0055555555555555566/8196 11263 17472 24733 24920 24922 25100 26803 27714 27718 27719 27730 27907 27913 27936 28142 28221 33954 34534 34535 36231 36247 43806 43828https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/689/983?format=asciiOpticaldefaultJ/ApJ/689/983/table1Target list and observation detailsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameTarget galaxy name (NGC or IC number)meta.id;meta.maincharprimaryTypeMorphological typesrc.morph.typecharDistDistance (1)Mpcpos.distance;pos.galactocentricfloatD25B-band 25th magnitude isophote (D_25_) diameters taken from RC3 (Cat. VII/155)arcminphys.angSize;em.opt.BfloatLK2MASS K-band luminosity (2)1e+11solLumphys.luminosityfloatAge? Age (3)Gyrtime.agefloatnullableE_Age? Positive Age 1{sigma} errorGyrstat.error;stat.maxfloatnullablee_Age? Negative Age 1{sigma} errorGyrstat.error;time.agefloatnullable[Fe/H]? Metallicity of [Fe/H] (3)log(Sun)phys.abund.Zfloatnullablee_[Fe/H]? 1{sigma} error of [Fe/H]log(Sun)stat.error;phys.abund.Fefloatnullable[a/Fe]? Metallicity of [{alpha}/Fe] (3)log(Sun)phys.abundfloatnullablee_[a/Fe]? 1{sigma} error of [a/Fe]log(Sun)stat.error;phys.abundfloatnullableOIDChandra observation identifiermeta.id;obs.paramintS/I[SI] ACIS instrument mode (Spectrum/Image)instr.setupcharDateObservation date starttime.start;obsnullableExpTotal exposure time; flaring removed (see section 2 for further details)kstime.duration;obs.exposurefloatSimbadSimbad column added by the CDScharNEDSimbad column added by the CDSchar_RAPositions from Simbad (right ascension part)degpos.eq.ra;meta.main_DEPositions from Simbad (declination part)degpos.eq.dec;meta.mainJ/ApJ/689/983/table6LMXB Source listsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameHost galaxy identification (NGC or IC number)meta.id.parentcharCXOUSource identification (JHHMMSS.s+DDMMSS)meta.id;meta.maincharCtsTotal counts detectedctphot.count;em.X-rayfloatLXX-ray (0.3-7keV) luminosity; units of 10^38^erg/s1e+31Wphys.luminosity;em.X-rayfloate_LXUncertainty in LX1e+31Wstat.errorfloatHR1? Hardness ratio HR1 (1)phot.flux;arith.ratiofloatnullablee_HR1? Uncertainty in HR1stat.errorfloatnullableHR2? Hardness ratio HR2 (1)phot.flux;arith.ratiofloatnullablee_HR2? Uncertainty in HR2stat.errorfloatnullableDelRProjected distance from galaxy centerarcminpos.angDistancefloatGC? Globular cluster catalog number given in Paper II (Humphrey, Cat. J/ApJ/690/512) (2)meta.id.crossintnullable_RAPositions from CXOU name (right ascension part)degpos.eq.ra;meta.main_DEPositions from CXOU name (declination part)degpos.eq.dec;meta.main