J/A+A/603/A56ivo://CDS.VizieR/J/A+A/603/A56doi:10.26093/cds/vizier.36030056CDSCazorla C.Morel T.Naze Y.Rauw G.Semaan T.Daflon S.Oey S.2017-07-18T14:44:36Z2017-07-07T09:15:04ZCDS support team

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

cds-question@unistra.frob-starsradial-velocityeffective-temperaturechemical-abundancesRecent observations have challenged our understanding of rotational mixing in massive stars by revealing a population of fast-rotating objects with apparently normal surface nitrogen abundances. However, several questions have arisen because of a number of issues (e.g., presence of numerous upper limits for the nitrogen abundance, unknown multiplicity status, mix of stars with different physical properties such as their mass and evolutionary state that are known to control the amount of rotational mixing), rendering a re-investigation necessary. We have carefully selected a large sample of bright, fast-rotating early-type stars of our Galaxy (40 objects with spectral types between B0.5 and O4). Their high-quality, high-resolution optical spectra were then analysed with the stellar atmosphere modelling codes DETAIL/SURFACE or CMFGEN, depending on the temperature of the target. Several internal and external checks were performed to validate our methods, notably comparing our results with literature data for some well-known objects, studying the effect of gravity darkening, or confronting the results provided by the two codes for stars amenable to both analyses. Furthermore, we have studied the radial velocities of the stars to assess their binarity. This first part of our study presents our methods and provides the derived stellar parameters, He, CNO abundances and the multiplicity status of every star of the sample. It is the first time that He and CNO abundances of such a large number of Galactic massive fast rotators are determined in a homogeneous way.2017A&A...603A..56Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/603/A56CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/603/A56https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/603/A56http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/603/A56https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/603/A56https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/603/A56http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/603/A56GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/603/A56/hot (Hotter stars stellar parameters and assumed wind parameters (table F2, part 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/603/A56/hot?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/603/A56/hot?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/603/A56/hot?GETtext/xml+votable180.050000true82.164196934.66909190.005555555555555556Cone search capability for table J/A+A/603/A56/cool (Cooler stars stellar parameters (table F2, part 1))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/603/A56/cool?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/603/A56/cool?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/603/A56/cool?GETtext/xml+votable180.050000true118.8916114-27.94910140.0055555555555555566/1297 1946 3214 3247 3249 3256 3263 3312 5506 6891 14008 14646 14654 14743 14825 15611 15631 21646 22033 22088 22167 22243 22249 23774 28915 29025 29893 30217 30818 37332 37339 37870 37907 38655 39327 39374 39796 41702 41903 42228https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/603/A56?format=asciiOpticaldefaultJ/A+A/603/A56/hotHotter stars stellar parameters and assumed wind parameters (table F2, part 2)SimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharn_Name[1]? Note on Name (1)meta.noteintnullablevsiniProjected rotational velocitykm/sphys.veloc.rotatinte_vsiniError on vsinikm/sstat.error;phys.veloc.rotatintl_vmacUpper limit sign for vmacmeta.code.errorcharvmacMacroturbulence velocitykm/sphys.velocintmultMultiplicity from spectroscopymeta.code.multipcharrunStatRunaway?meta.codecharTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on TeffKstat.error;phys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloate_loggError on logglog(cm.s**-2)stat.errorfloatloggCSurface gravity corrected for centrifuge forceslog(cm.s**-2)phys.gravityfloate_loggCError on loggClog(cm.s**-2)stat.errorfloatlogdM/dtMass-loss ratelog(solMass.yr**-1)phys.mass.lossfloatvinfTerminal velocitykm/sphys.velocintbetaWind beta parameterstat.fit.paramfloatYHelium abundancephys.abund.Yfloate_YError on ystat.error;pos.cartesian.yfloatl_logE(C)[<>= ] Lower/upper limit in logE(C)meta.code.errorcharlogE(C)Carbon abundancephys.abundfloate_logE(C)Error on logE(C)stat.errorfloatl_logE(N)[<>= ] Lower/upper limit in logE(N)meta.code.errorcharlogE(N)Nitrogen abundancephys.abundfloate_logE(N)Error on logE(N)stat.errorfloatl_logE(O)[<>= ] Lower/upper limit in logE(O)meta.code.errorcharlogE(O)Oxygen abundancephys.abundfloate_logE(O)Error on logE(O)stat.errorfloatl_[N/C][<>= ] Lower/upper limit in [N/C]meta.code.error;phys.abundchar[N/C]N/C abundance ratiophys.abundfloate_[N/C]Error on [N/C] (2)stat.error;phys.abundfloatl_[N/O][<>= ] Lower/upper limit in [N/O]meta.code.error;phys.abundchar[N/O]? N/O abundance ratiophys.abundfloatnullablee_[N/O]? Error on [N/O] (2)stat.error;phys.abundfloatnullable_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.mainJ/A+A/603/A56/coolCooler stars stellar parameters (table F2, part 1)SimbadNameSimbad column added by the CDSmeta.idchare_[N/C]Error on [N/C]stat.error;phys.abundfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharn_Name[1/2]? Note on Name (1)meta.noteintnullablevsiniProjected rotational velocitykm/sphys.veloc.rotatinte_vsiniError on vsinikm/sstat.error;phys.veloc.rotatintl_vmacUpper limit sign for vmacmeta.code.errorcharvmacMacroturbulence velocitykm/sphys.velocintmultMultiplicity from spectroscopymeta.code.multipcharrunStat[Yes No] Runaway?meta.codecharTeffEffective temperatureKphys.temperature.effectiveinte_TeffError on TeffKstat.error;phys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloate_loggError on logglog(cm.s**-2)stat.errorfloatloggCSurface gravity corrected for centrifuge forceslog(cm.s**-2)phys.gravityfloate_loggCError on loggClog(cm.s**-2)stat.errorfloatYHelium abundancephys.abund.Yfloate_YError on Ystat.error;pos.cartesian.yfloatl_logE(C)Lower/upper limit in logE(C)meta.code.errorcharlogE(C)? Carbon abundancephys.abundfloatnullablee_logE(C)Error on logE(C)stat.errorfloatl_logE(N)Lower/upper limit in logE(N)meta.code.errorcharlogE(N)Nitrogen abundancephys.abundfloate_logE(N)Error on logE(N)stat.errorfloatl_logE(O1)Lower/upper limit in logE(O) in 4060-4082{AA}meta.code.errorcharlogE(O1)? Oxygen abundance in 4060-4082{AA}phys.abundfloatnullablelogE(O2)Oxygen abundance in 4691-4709{AA}phys.abundfloatlogE(O)Adopted oxygen abundancephys.abundfloate_logE(O)Error on logE(O)stat.errorfloatl_[N/C]Lower/upper limit in [N/C]meta.code.error;phys.abundchar[N/C]? N/C abundance ratiophys.abundfloatnullablel_[N/O]Lower/upper limit in [N/O]meta.code.error;phys.abundchar[N/O]N/O abundance ratiophys.abundfloate_[N/O]Error on [N/O]stat.error;phys.abundfloat_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.main