J/ApJS/243/3ivo://CDS.VizieR/J/ApJS/243/3doi:10.26093/cds/vizier.22430003CDSLehmer B.D.Eufrasio R.T.Tzanavaris P.Basu-Zych A.Fragos T.,Prestwich A.Yukita M.Zezas A.Hornschemeier A.E.Ptak A.2020-09-30T10:33:58Z2020-02-05T09:19:18ZCDS support team

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

cds-question@unistra.frgalaxiesx-ray-binary-starsx-ray-sourcesWe present new Chandra constraints on the X-ray luminosity functions (XLFs) of X-ray binary (XRB) populations, as well as their scaling relations, for a sample of 38 nearby galaxies (D=3.4-29Mpc). Our galaxy sample is drawn primarily from the Spitzer Infrared Nearby Galaxies Survey (SINGS) and contains a wealth of Chandra (5.8Ms total) and multiwavelength data, allowing for star formation rates (SFRs) and stellar masses (M_*_) to be measured on subgalactic scales. We divided the 2478 X-ray-detected sources into 21 subsamples in bins of specific SFR (sSFR=SFR/M_*_) and constructed XLFs. To model the XLF dependence on sSFR, we fit a global XLF model, containing contributions from high-mass XRBs (HMXBs), low-mass XRBs (LMXBs), and background sources from the cosmic X-ray background that respectively scale with SFR, M_*_, and sky area. We find an HMXB XLF that is more complex in shape than previously reported and an LMXB XLF that likely varies with sSFR, potentially due to an age dependence. When applying our global model to XLF data for each individual galaxy, we discover a few galaxy XLFs that significantly deviate from our model beyond statistical scatter. Most notably, relatively low-metallicity galaxies have an excess of HMXBs above ~10^38^erg/s, and elliptical galaxies that have relatively rich populations of globular clusters (GCs) show excesses of LMXBs compared to the global model. Additional modeling of how the XRB XLF depends on stellar age, metallicity, and GC specific frequency is required to sufficiently characterize the XLFs of galaxies.2019ApJS..243....3Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/243/3CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2014)J/ApJ/586/794 : Multiwavelength luminosities of galaxies (Bell, 2003)J/ApJ/602/231 : Chandra X-ray point sources in nearby gal. (Colbert+, 2004)J/ApJ/617/240 : Oxygen abundances in the GOODS-North field (Kobulnicky+, 2004)J/ApJ/681/197 : ACS Virgo Cluster Survey. XV (Peng+, 2008)J/ApJ/695/580 : Oxygen abundance in M83 (Bresolin+, 2009)J/ApJS/190/233 : Spectroscopy and abundances of SINGS gal. (Moustakas+, 2010)J/MNRAS/419/2095 : HMXBs in nearby galaxies (Mineo+, 2012)J/ApJ/764/41 : X-ray binary evolution across cosmic time (Fragos+, 2013)J/ApJ/772/82 : A catalog of globular cluster systems (Harris+, 2013)J/ApJ/774/136 : SINGS gal. X-ray data compared to models (Tzanavaris+, 2013)J/AJ/146/86 : Cosmicflows-2 catalog (CF2) (Tully+, 2013)J/ApJ/776/L31 : Energy feedback from XRB from z=0 to z=19.92 (Fragos+, 2013)J/MNRAS/440/2265 : Spectroscopy of NGC3310 HII reg. (Miralles-Caballero+, 2014)J/ApJS/212/21 : A deep Chandra ACIS survey of M83 (Long+, 2014)J/ApJ/817/95 : X-ray observations of HCG galaxies (Tzanavaris+, 2016)J/ApJ/825/7 : Evolution of ~6Ms CDF-S galaxies (Lehmer+, 2016)J/MNRAS/466/1019 : Bright HMXBs in THINGS galaxies (Sazonov+, 2017)J/ApJ/865/43 : X-ray analysis of Chandra-COSMOS gal. (Fornasini+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/243/3https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/243/3http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/243/3https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/243/3https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/243/3http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/243/3GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/243/3/sings (List of SINGS galaxies; table added by CDS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/243/3/sings?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/243/3/sings?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/243/3/sings?GETtext/xml+votable180.050000true14.9587083-7.57796110.005555555555555556Cone search capability for table J/ApJS/243/3/table2 (Chandra Advanced CCD Imaging Spectrometer (ACIS) observation log)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/243/3/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/243/3/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/243/3/table2?GETtext/xml+votable180.050000true14.9553686-7.57448690.005555555555555556Cone search capability for table J/ApJS/243/3/table7 (X-ray point-source catalog and properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/243/3/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/243/3/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/243/3/table7?GETtext/xml+votable180.050000true14.93137889-7.583701110.0055555555555555565/8623 6/2320 4447 5470 5492 5715 5751 7240 7241 7606 10475 10761 10841 10856 11026 11027 11262 11263 11434 11457 13522 15592 15593 17594 17606 17612 18398 25083 25946 26271 26314 27030 27514 27861 27936 27937 28015 28033 28035 28039 28123 28167 28496 34471 34534 34535 35993 43881 46399https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/243/3?format=asciiX-raydefaultJ/ApJS/243/3/singsList of SINGS galaxies; table added by CDSrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNGCNGC number of the host galaxymeta.id;meta.mainintprimaryNobsNumber of Chandra observations for this galaxy (link to Table 2)meta.numberintnullableNxNumber of X-ray point sources for this galaxy (link to Table 7)meta.numberintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharNEDNED column added by the CDSmeta.ref.urlcharLEDAmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainT13Display data from Tzanavaris+, 2013, J/ApJ/774/136meta.ref.urlintnullableJ/ApJS/243/3/table2Chandra Advanced CCD Imaging Spectrometer (ACIS) observation logGalName of the host galaxymeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNGCNGC number of the host galaxy as in Table 7; column added by CDSmeta.id;meta.mainintObsID[354/21676]? Chandra Observation ID; null for merged IDsmeta.id;obsintnullablef_ObsID[de] Flag on ObsID (1)meta.codecharRAJ2000Right Ascension, Aim Point (J2000)degpos.eq.ra;meta.mainDEJ2000Declination, Aim Point (J2000)degpos.eq.dec;meta.mainObsDateUT Observation Date timestime.epoch;obsnullableExp[2/892] Total exposure time (2)kstime.duration;obs.exposureintNfl[1/2]? Number of flaring intervals, rejectedmeta.numberintnullableTfl[0.5/2]? Combined flare duration, rejectedkstime.intervalfloatnullabledRA[-0.7/0.8]? Offset in Right Ascensionarcsecpos.eq.ra;arith.difffloatnullabledDE[-1.3/0.6]? Offset in Declinationarcsecpos.eq.dec;arith.difffloatnullableMode[FV] Observation Mode (F=faint mode; or V=very faint mode)meta.codecharJ/ApJS/243/3/table7X-ray point-source catalog and propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNGCNGC number of the host galaxymeta.id.parentintIDPoint-source identification number within the galaxymeta.id;meta.mainintRAJ2000Right Ascension, point source (J2000)degpos.eq.ra;meta.mainDEJ2000Declination, point source (J2000)degpos.eq.dec;meta.maintheta[0/12.4] Offset (1)arcminpos;arith.difffloatNFB[0.7/114995] Net (background subtracted) 0.5-7keV countsctphot.count;em.X-ray.medium;src.netdoublee_NFB[1/359] 1{sigma} uncertainty in NFBctstat.errorfloatNH[0.008/15.5] Best-fit column density (2)1e+22cm**-2phys.columnDensity;meta.modelledfloate_NH[0.001/14]? 1{sigma} uncertainty in NH (2)1e+22cm**-2stat.errorfloatnullableGamma[0.09/3.3] Best-fit photon index, {Gamma} (2)meta.code;spect.index;meta.modelledfloate_Gamma[0.01/3]? 1{sigma} uncertainty in Gamma (2)stat.errorfloatnullablelogFFB[-16.6/-11.4] log, 0.5-8keV source fluxlog(mW.m**-2)phot.flux;em.X-rayfloatlogLFB[34.8/41] log, 0.5-8keV source luminositylog(1e-07W)phys.luminosity;em.X-rayfloatLoc[1/5] Location Flag (3)meta.codeint