J/MNRAS/491/3606ivo://CDS.VizieR/J/MNRAS/491/3606doi:10.26093/cds/vizier.74913606CDSPonnada S.Brorby M.Kaaret P.2024-08-20T20:14:48Z2023-04-28T11:52:02ZCDS support team

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

cds-question@unistra.frx-ray-binary-starsgalaxiesx-ray-sourceschemical-abundancesultraviolet-photometryinfrared-astronomyThe heating of the intergalactic medium in the early, metal-poor Universe may have been partly due to radiation from high-mass X-ray binaries (HMXBs). Previous investigations on the effect of metallicity have used galaxies of different types. To isolate the effects of metallicity on the production of HMXBs, we study a sample consisting only of 46 blue compact dwarf galaxies covering metallicity in the range 12+log(O/H) of 7.15-8.66. To test the hypothesis of metallicity dependence in the X-ray luminosity function (XLF), we fix the XLF form to that found for near-solar metallicity galaxies and use a Bayesian method to constrain the XLF normalization as a function of star formation rate for three different metallicity ranges in our sample. We find an increase by a factor of 4.45+/-2.04 in the XLF normalization between the metallicity ranges 7.1-7.7 and 8.2-8.66 at a statistical significance of 99.79 per cent. Our results suggest that HMXB production is enhanced at low metallicity, and consequently that HMXBs may have contributed significantly to the reheating of the early Universe.2020MNRAS.491.3606Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/491/3606CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2014)J/ApJ/662/15 : Abundances in extragalactic HII regions (Izotov+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/491/3606https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/491/3606http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/491/3606https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/491/3606https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/491/3606http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/491/3606GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/491/3606/tablea1 (BCDs including the Brorby et al. (2014MNRAS.441.2346B) and NED sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/491/3606/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/491/3606/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/491/3606/tablea1?GETtext/xml+votable180.050000true149.190416728.8260.0055555555555555566/3389 4948 5116 5283 5359 5964 6010 6042 6046 6075 6115 6419 6619 6981 7251 7260-7261 7281 7769 7799 7946 8028 10348 10587 10689 10762 10970 17491 17614 18011 19112 19125 20400 22828 23566 25594 25916 27654 27765 28147 33986 34430 36974 38821 43874https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/491/3606?format=asciiX-rayUVInfrareddefaultJ/MNRAS/491/3606/tablea1BCDs including the Brorby et al. (2014MNRAS.441.2346B) and NED sampleSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharIDObsID from Chandrameta.idint12+log(O/H)Oxygen abundance 12+log(O/H)phys.abundfloatr_12+log(O/H)Reference for 12+log(O/H) (1)meta.ref;pos.framecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainExptimeChandra exposure timekstime.duration;obs.exposurefloatDistDistanceMpcpos.distancefloatJ/MNRAS/491/3606/tablea2X-ray source photometryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharf_Name[*] Flag on Name (1)meta.codecharnHColumn density obtained using the Colden tool1e+20cm**-2phys.columnDensityfloatR25R25 taken from HyperLeda and modified as described in Section 3arcsecphys.angSize;srcfloatR25HLMajor axis radius at the 25B-mag/arcsec^2^ from HyperLeda (R_25_=D_25_/2)arcsecphys.angSize;srcfloatPA[] Position angle from HyperLEDAdegpos.posAngfloatNsupLminNumber of observed sources within the D_25_ ellipse with luminosity greater than L_min_meta.numberintNbkgNumber of expected background sources within the D_25_ ellipse, as determined by logN-logS curves of Georgakakis et al. (2008MNRAS.388.1205G)meta.numberfloatLminLuminosity limit calculated for the 0.5-8.0keV energy band1e+31Wphys.luminosity;em.X-rayfloatJ/MNRAS/491/3606/tablea3UV measurements and SFRsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameGalaxy namemeta.id;meta.maincharE(B-V)Extinction obtained using the Infrared Science Archive (IRSA) tool DUSTmagphot.color.excessfloatCRFUVCount rate in the FUV band of GALEX observationsct/sphot.count;em.UVfloatLFUVLuminosity in the FUV band, 1350-1750{AA}1e+19W.Hz**-1phys.luminosity;em.UVfloatSFRFUVStar formation rate as determined by the Hunter et al. (2010AJ....139..447H) method0.001solMass.yr**-1phys.SFRdoubleCRNUVCount Rate in the NUV band of GALEX, 1750-2800{AA}ct/sphot.count;em.UVdoubleSFRNUVStar formation rate in the NUV0.001solMass.yr**-1phys.SFRdoubleSFRIR? Star formation rate in the IR via Spitzer images (Brorby et al. 2014MNRAS.441.2346B)0.001solMass.yr**-1phys.SFRdoublenullable