J/A+A/506/1055ivo://CDS.VizieR/J/A+A/506/1055doi:10.26093/cds/vizier.35061055CDSNaze Y.2017-10-18T08:24:48Z2009-12-30T16:33:54ZCDS support team

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

cds-question@unistra.frx-ray-sourcesearly-type-starsFollowing the advent of increasingly sensitive X-ray observatories, deep observations of early-type stars became possible. However, the results for only a few objects or clusters have until now been reported and there has been no large survey comparable to that based upon the ROSAT All-Sky Survey (RASS). A limited survey of X-ray sources, consisting of all public XMM observations (2XMMi) and slew survey data (XMMSL1), is now available. The X-ray counterparts to hot, massive stars have been searched for in these catalogs. About 300 OB stars were detected with XMM. Half of them were bright enough for a spectral analysis to be possible, and we make available the detailed spectral properties that were derived. The X-ray spectra of O stars are represented well by low (<1keV) temperature components and seem to indicate that an absorption column is present in addition to the interstellar contribution. The X-ray fluxes are well correlated with the bolometric fluxes, with a scatter comparable to that of the RASS studies and thus larger than found previously with XMM for some individual clusters. These results contrast with those of B stars that exhibit a large scatter in the L_X-L_BOL relation, no additional absorption being found, and the fits indicate a plasma at higher temperatures. Variability (either within one exposure or between multiple exposures) was also investigated whenever possible: short-term variations are far more rare than long-term ones (the former affects a few percent of the sample, while the latter concerns between one third and two thirds of the sources).2009A&A...506.1055Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/506/1055CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/125 : Photometry and Spectroscopy for Luminous Stars (Reed 2005)IX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)IX/29 : ROSAT All-Sky Survey Faint Source Catalog (Voges+ 2000)IX/37 : XMM-Newton Serendipitous Source Catalogue (1XMM) (XMM-SSC, 2003)IX/40 : XMM-Newton 2nd Incremental Source Catalogue (2XMMi) (XMM-SSC, 2008)B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2009)J/A+A/619/A148 : Hot stars observed by XMM-Newton. II. (Naze+, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/506/1055https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/506/1055http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/506/1055https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/506/1055https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/506/1055http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/506/1055GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/506/1055/table1 (Hot stars detected in the 2XMMi)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/506/1055/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/506/1055/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/506/1055/table1?GETtext/xml+votable180.050000true1.51333363.6794440.0055555555555555566/1198 1293 1539 2943 3066 3256-3258 3307-3308 3616 3632 3723 14263 14619 14628 14631 14646 14651 14670 14692-14693 14696 15369-15370 15506 16144 20510 20764 21196 21438-21439 21641 21643 22253 22615 22805 22854 22862 22872-22873 23637 23717 23995 28719 28808-28809 28822-28823 28825 28828 28830 28833 28890-28892 28894 28913 28915 29081 29097 29101 29116 29118-29119 29162-29163 29461 29510-29513 29523 29530 30312 30505 33053 33112 34896 37231 37335 37592-37593 37790 37926 37930 37936 38016 39181 39192 39216 39327 39853 39916 41599 41630 41654 41670 41680 41685 41689 41713 41758 41982 42080 42206 42214 42394 42396-42397 42435 42438 42948 43024 43028 43042 43310 44307 47648https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/506/1055?format=asciiX-raydefaultJ/A+A/506/1055/table1Hot stars detected in the 2XMMiNameUsual name of the sourcemeta.id.crosschar2XMMIAU name of the 2XMM(i) sourcemeta.id.crosscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCl[1,6] quality / spectral class code (1)meta.codecharSpSimbad column added by the CDSmeta.ref.urlcharPair[a-e] Identification of the same members of a pair (2)meta.code.multipcharQueryName or coord. used to query the 2XMMi catal.meta.codecharALSID Number in Reed catalog (<V/125>)meta.id;meta.mainintprimarySpTypeMK Spectral type (3)src.spTypecharBin[Y] Binary if set to Y (=yes)meta.codecharSimb[~] ~ if taken from Simbadmeta.codecharVmag? V magnitudemagphot.mag;em.opt.VfloatnullableB-V? B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatnullableN(H,int)? Interstellar absorption columncm**-2phys.absorptiondoublenullablelogFbol? Logarithm of the bolometric flux (4)log(mW.m**-2)phot.flux.bolfloatnullableDistDistance between X-ray source and stararcsecpos;arith.difffloatFiltpnFilter used for EPIC-pnmeta.code;instr.filtercharFiltM1Filter used for EPIC-MOS1meta.code;instr.filtercharFiltM2Filter used for EPIC-MOS2meta.code;instr.filtercharCRpn? Count rate in 0.5-4.5keV for pnct/sphot.count;em.X-raydoublenullablee_CRpn? Error on the pn count ratect/sstat.errordoublenullableCRM1? Count rate in 0.5-4.5keV for MOS1ct/sphot.count;em.X-raydoublenullablee_CRM1? Error on the MOS1 count ratect/sstat.errordoublenullableCRM2? Count rate in 0.5-4.5keV for MOS2ct/sphot.count;em.X-raydoublenullablee_CRM2? Error on the MOS2 count ratect/sstat.errordoublenullableHR1pn? HR1 for EPIC-pn (5)phot.flux;arith.ratiofloatnullablee_HR1pn? Error on pn HR1stat.errorfloatnullableHR2pn? HR2 for EPIC-pn (5)phot.flux;arith.ratiofloatnullablee_HR2pn? Error on pn HR2stat.errorfloatnullableHR3pn? HR3 for EPIC-pn (5)phot.flux;arith.ratiofloatnullablee_HR3pn? Error on pn HR3stat.errorfloatnullableHR4pn? HR4 for EPIC-pn (5)phot.flux;arith.ratiofloatnullablee_HR4pn? Error on pn HR4stat.errordoublenullableHR1M1? HR1 for EPIC-MOS1 (5)phot.flux;arith.ratiofloatnullablee_HR1M1? Error on MOS1 HR1stat.errorfloatnullableHR2M1? HR2 for EPIC-MOS1 (5)phot.flux;arith.ratiofloatnullablee_HR2M1? Error on MOS1 HR2stat.errorfloatnullableHR3M1? HR3 for EPIC-MOS1 (5)phot.flux;arith.ratiofloatnullablee_HR3M1? Error on MOS1 HR3stat.errorfloatnullableHR4M1? HR4 for EPIC-MOS1 (5)phot.flux;arith.ratiofloatnullablee_HR4M1? Error on MOS1 HR4stat.errorfloatnullableHR1M2? HR1 for EPIC-MOS2 (5)phot.flux;arith.ratiofloatnullablee_HR1M2? Error on MOS2 HR1stat.errorfloatnullableHR2M2? HR2 for EPIC-MOS2 (5)phot.flux;arith.ratiofloatnullablee_HR2M2? Error on MOS2 HR2stat.errorfloatnullableHR3M2? HR3 for EPIC-MOS2 (5)phot.flux;arith.ratiofloatnullablee_HR3M2? Error on MOS2 HR3stat.errorfloatnullableHR4M2? HR4 for EPIC-MOS2 (5)phot.flux;arith.ratiofloatnullablee_HR4M2? Error on MOS2 HR4stat.errordoublenullableLikTotal detection likelihoodstat.likelihooddoubleQualOverall quality flag (6)meta.code.qualintSTVShort-term variability flags (7)meta.code;src.varintLTVLong-term variability flags (7)meta.code;src.varintNumNumber of individual detectionsmeta.numberintFX? Unabsorbed X-ray flux in 0.5-10.keVmW.m**-2phot.flux;em.X-raydoublenullableLx/L? Luminosity ratio, log(L_X_/L_bol_)phys.luminosity;arith.ratiofloatnullableSimbadSimbad column added by the CDSchar_RAX-ray position (from 2XMM name) (right ascension part)degpos.eq.ra;meta.main_DEX-ray position (from 2XMM name) (declination part)degpos.eq.dec;meta.mainJ/A+A/506/1055/table5Spectral properties of detected hot starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintALSID Number in Reed catalogmeta.id;meta.mainintNameUsual name of the sourcemeta.idcharN(H,int)? Interstellar absorption columncm**-2phys.absorptiondoublenullablechi2Chi-square of the fitstat.fit.param;meta.modelledfloatdofNumber of degrees of freedommeta.numberintFtObserved flux in 0.5-10keVmW.m**-2phot.flux;em.X-raydoubleFsObserved flux in 0.5-1keVmW.m**-2phot.flux;em.X-raydoubleFmObserved flux in 1.-2.5keVmW.m**-2phot.flux;em.X-raydoubleFhObserved flux in 2.5-10keVmW.m**-2phot.flux;em.X-raydoubleunFtUnabsorbed flux in 0.5-10keVmW.m**-2phot.flux;em.X-raydoubleunFsUnabsorbed flux in 0.5-1keVmW.m**-2phot.flux;em.X-raydoubleunFmUnabsorbed flux in 1.-2.5keVmW.m**-2phot.flux;em.X-raydoubleunFhUnabsorbed flux in 2.5-10keVmW.m**-2phot.flux;em.X-raydoubleN(H)Fitted absorption column1e+22cm**-2phys.columnDensityfloatN(H)l? Lower limit of the 90% conf. int. on N(H)1e+22cm**-2phys.columnDensityfloatnullableN(H)u? Upper limit of the 90% conf. int. on N(H)1e+22cm**-2phys.columnDensityfloatnullablekT1? Temperature of the first mekal componentkeVphys.temperaturefloatnullablekT1l? Lower limit of the 90% conf. int. on kT1keVphys.temperaturefloatnullablekT1u? Upper limit of the 90% conf. int. on kT1keVphys.temperaturefloatnullablenorm1Normalization factor of kT1cm**-5arith.factor;pos.distancedoublenorm1l? Lower limit of the 90% conf. int. on norm1cm**-5arith.factor;pos.distancedoublenullablenorm1u? Upper limit of the 90% conf. int. on norm1cm**-5arith.factor;pos.distancedoublenullablekT2? Temperature of the second mekal componentkeVphys.temperaturefloatnullablekT2l? Lower limit of the 90% conf. int. on kT2keVphys.temperaturefloatnullablekT2u? Upper limit of the 90% conf. int. on kT2keVphys.temperaturefloatnullablenorm2? Normalization factor of kT2cm**-5arith.factor;pos.distancedoublenullablenorm2l? Lower limit of the 90% conf. int. on norm2cm**-5arith.factor;pos.distancedoublenullablenorm2u? Upper limit of the 90% conf. int. on norm2cm**-5arith.factor;pos.distancedoublenullablekT3? Temperature of the third mekal componentkeVphys.temperaturefloatnullablekT3l? Lower limit of the 90% conf. int. on kT3keVphys.temperaturefloatnullablekT3u? Upper limit of the 90% conf. int. on kT3keVphys.temperaturefloatnullablenorm3? Normalization factor of kT3cm**-5arith.factor;pos.distancedoublenullablenorm3l? Lower limit of the 90% conf. int. on norm3cm**-5arith.factor;pos.distancedoublenullablenorm3u? Upper limit of the 90% conf. int. on norm3cm**-5arith.factor;pos.distancedoublenullableRemarksAdditional remarksmeta.notechar