J/A+A/620/A89ivo://CDS.VizieR/J/A+A/620/A89doi:10.26093/cds/vizier.36200089CDSNebot Gomez-Moran A.Oskinova L.M.2019-01-07T09:28:24Z2018-12-04T11:10:52ZCDS support team

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

cds-question@unistra.fro-starsx-ray-sourcesstellar-distanceThe X-ray emission of O-type stars was first discovered in the early days of the Einstein satellite. Since then many different surveys have confirmed that the ratio of X-ray to bolometric luminosity in O-type stars is roughly constant, but there is a paucity of studies that account for detailed information on spectral and wind properties of O-stars. Recently a significant sample of O stars within our Galaxy was spectroscopically identified and presented in the Galactic O-Star Spectroscopic Survey (GOSS). At the same time, a large high-fidelity catalog of X-ray sources detected by the XMM-Newton X-ray telescope was released. Here we present the X-ray catalog of O stars with known spectral types and investigate the dependence of their X-ray properties on spectral type as well as stellar and wind parameters.We find that, among the GOSS sample, 127 O-stars have a unique XMM-Newton source counterpart and a Gaia data release 2 (DR2) association. Terminal velocities are known for a subsample of 35 of these stars.We confirm that the X-ray luminosities of dwarf and giant O stars correlate with their bolometric luminosity. For the subsample of O stars with measure terminal velocities we find that the X-ray luminosities of dwarf and giant O stars also correlate with wind parameters. However, we find that these correlations break down for supergiant stars. Moreover, we show that supergiant stars are systematically harder in X-rays compared to giant and dwarf O-type stars. We find that the X-ray luminosity depends on spectral type, but seems to be independent of whether the stars are single or in a binary system. Finally, we show that the distribution of log(LX/Lbol) in our sample stars is non-Gaussian, with the peak of the distribution at log(LX/Lbol)~=-6.6.2018A&A...620A..89Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/620/A89CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)IX/50 : XMM-Newton Serendipitous Source Catalogue 3XMM-DR6 (XMM-SSC, 2016)III/274 : Galactic O-Star Spectroscopic Survey (GOSSS) (Sota+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/620/A89https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/620/A89http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/620/A89https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/620/A89https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/620/A89http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/620/A89GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/620/A89/catalog (GOSXMM catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/620/A89/catalog?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/620/A89/catalog?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/620/A89/catalog?GETtext/xml+votable180.050000true270.968525-24.360733330.0055555555555555566/1287 1293 2409 3214 3231 3261 3307-3308 5506 12943 14263 14630 14641 14646 14653 14692-14693 14706 15577 15631 21432 21439 21647 21655 22517 23637 23717 28809 28890 28913 29116 29118 29162 29463 29513 29530 29537 37335 37899 37926 38016 39916 41680 41685 42206 42394 42416 42438 424833.322582951404819e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/620/A89?format=asciiX-raydefaultJ/A+A/620/A89/catalogGOSXMM catalogSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGOSGOS name (LLL.ll+BB.bb_ii, ii: index, <GOS GLLL.ll+BB.bb NN> in Simbad) (gos)meta.idcharNameAlternative name (name)meta.idcharXMM3XMM-DR7 name (3XMM JHHMMSS.s+DDMMSS) (xmm_name)meta.idcharGaiaDR2Gaia source identifier, identical to the Gaia-DR2 source_id (GaiaDR2_source_id)meta.id;meta.mainRAJ2000Right ascension (J2000) (RAH)pos.eq.ra;meta.mainDEJ2000Declination (J2000) (DECD)pos.eq.dec;meta.mainVMAGAbsolute V magnitude (Mv) (1)magphys.magAbs;em.opt.Vfloate_VMAGAbsolute V magnitude error (e_Mv)magstat.errorfloatMbolBolometric magnitude (Mbol) (1)magphys.magAbs.bolfloate_MbolBolometric magnitude error (e_Mbol)magstat.errorfloatTeffEffective temperature (Teff) (1)Kphys.temperature.effectiveinte_Teff[2000] Effective temperature error (e_Teff)Kstat.error;phys.temperature.effectiveintloggEffective gravity (logg) (1)log(cm.s**-2)phys.gravityfloate_loggErro in logg (e_logg)log(cm.s**-2)stat.errorfloatlogLbolBolometric luminosity in erg/s (log_Lbol_Lsun_S)log(1e-07W)phys.luminosityfloatVinf? Terminal velocity (Vinf) (2)km/sphys.velocintnullablelogdM/dtVTheoretical mass loss rate (log_Mass_rate_vink) (3)log(solMass.yr**-1)phys.mass.lossdoublelogdM/dtEstimated mass loss rate in this paper (log_Mass_rate)log(solMass.yr**-1)meta.bibdoubleDistGEstimated distance distance_Gaia (distance_Gaia) (4)kpcpos.distance;pos.heliocentricdoubleb_DistGLower bound on the confidence interval of the estimated distance (min_distance_Gaia)kpcpos.distance;stat.fit.paramdoubleB_DistGUpper bound on the confidence interval of the estimated distance (max_distance_Gaia)kpcpos.distance;stat.fit.paramdoubleDistMVSpectrophotometric distance (distance_Mv)kpcpos.distance;pos.heliocentricdoublee_DistMVError in the spectrophotometric distance (error_distance_Mv)kpcstat.errordoubleBmagB magnitude (Bmag)magphot.mag;em.opt.Bfloate_BmagError in the B magnitude (e_Bmag)magstat.error;phot.mag;em.opt.BfloatVmagV magnitude (Vmag)magphot.mag;em.opt.Vfloate_VmagError in the V magnitude (e_Vmag)magstat.error;phot.mag;em.opt.VfloatE(B-V)Color excess (EB_V)magphot.color.excessfloate_E(B-V)Error in the color excess (e_EB_V)magstat.errorfloatAVExtinction in the V band (Av)magphys.absorption;em.opt.Vfloate_AVError in the extinction in the V band (e_Av)magstat.errorfloatNHHydrogen column density (Nh)cm**-2phys.columnDensitydoublePNCTMean count rate in the 0.2-12keV band (PN_count_rate)ct/sphot.count;em.X-raydoublee_PNCTError in the mean count rate in the 0.2-12keV band (err_count_rate)ct/sstat.errordoubleFXUnabsorbed flux in the 0.2-12keV band in erg/s/cm^2^ (fx)mW.m**-2phot.flux;em.X-raydoubleb_FXMinimum unabsorbed flux in the 0.2-12keV band in erg/s/cm^2^ (fx_min)mW.m**-2phot.flux;em.X-ray.medium;stat.mindoubleB_FXMaximum unabsorbed flux in the 0.2-12keV band in erg/s/cm^2^ (fx_max)mW.m**-2phot.flux;em.X-ray.medium;stat.maxdoublelogFbolBolometric flux in erg/s/cm^2^ (log_fbol)mW.m**-2phot.flux.bolfloate_logFbolError in the bolometric flux in erg/s/cm^2^ (e_log_fbol)mW.m**-2stat.errorfloatlogFX/fbolX-ray to bolometric flux in erg/s/cm^2^ (log_fx_fbol)phot.flux;arith.ratiofloatb_logFX/fbolMinimum X-ray to bolometric flux (min_log_fx_fbol)phot.flux.bol;stat.minfloatB_logFX/fbolMaximum X-ray to bolometric flux (max_log_fx_fbol)phot.flux.bol;stat.maxfloatlogLXX-ray luminosity in erg/s (log_Lx)log(1e-07W)phys.luminosity;em.X-rayfloatb_logLXMinimum X-ray luminosity in erg/s (min_log_Lx)log(1e-07W)phys.luminosity;em.X-ray;stat.minfloatB_logLXMaximum X-ray luminosity in erg/s (max_log_Lx)log(1e-07W)phys.luminosity;em.X-ray;stat.maxfloatlogLbolGBolometric luminosity in erg/s (log_Lbol_Gaia)log(1e-07W)phys.luminosityfloatb_logLbolGMinimum bolometric luminosity in erg/s (min_log_Lbol_Gaia)log(1e-07W)phys.luminosity;stat.minfloatB_logLbolGMaximum bolometric luminosity in erg/s (max_log_Lbol_Gaia)log(1e-07W)phys.luminosity;stat.maxfloatHR2Hardness ratio HR2 (HR2)phot.flux;arith.ratiofloate_HR2Error in HR2 (HR2_ERR)stat.errorfloatHR3? Hardness ratio HR3 (HR3)phot.flux;arith.ratiofloatnullablee_HR3? Error in HR3 (HR3_ERR)stat.errorfloatnullable