J/MNRAS/471/3398ivo://CDS.VizieR/J/MNRAS/471/3398doi:10.26093/cds/vizier.74713398CDSAhmed A.Sigut T.A.A.2024-08-17T20:20:26Z2020-07-22T12:53:21ZCDS support team

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

cds-question@unistra.frb-starschemical-abundanceseffective-temperaturePhotospheric nitrogen abundances for a sample of 26 Be stars and 16 normal B stars were found using high-resolution spectra from the Magnetism in Massive Stars (MiMeS) spectroscopic survey. Nitrogen abundances were obtained using non-local-thermodynamic-equilibrium equivalent widths and line profiles, and Monte Carlo simulation was used to determine the error bounds of the measured nitrogen abundances due to uncertainties in the adopted stellar parameters, continuum normalization and atomic data. In addition, the effects of gravitational darkening and disc contamination on the measured Be star nitrogen abundances were investigated. About one third of the sample of Be stars and half of the normal B-type stars have nitrogen enrichment that may be due to rotational mixing in these rapidly rotating objects. Corrections for gravitational darkening and disc contamination do not significantly change the overall results for the Be star sample. The average nitrogen abundance of the B and Be star samples coincides with the solar abundance, although the dispersion in the nitrogen abundances is much larger in the Be star sample. The Be star sample also has a significant fraction of sub-solar nitrogen abundance objects that are not present in significant numbers in the B star sample. This may point to yet unresolved systematic errors in the analysis of the Be stars.2017MNRAS.471.3398Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/471/3398CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/440/305 : Fundamental parameters of fast-rotating B starsJ/MNRAS/371/252 : Southern B and Be stars (Levenhagen+, 2006)J/A+A/501/297 : Effective temperatures of B Supergiants (Zorec+, 2009)J/A+A/539/A143 : Nearby B-stars stellar parameters and abundancesJ/A+A/551/A12 : HD 48977 frequency analysis (Thoul+, 2013)J/A+A/550/A79 : H{alpha} and H{beta} lines of northern Be starsJ/MNRAS/456/2 : MiMeS survey of magnetism in massive stars (Wade+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/471/3398https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/471/3398http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/471/3398https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/471/3398https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/471/3398http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/471/3398GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/471/3398/table1 (Stellar parameters adopted for the MiMeS Be star sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/471/3398/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/471/3398/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/471/3398/table1?GETtext/xml+votable180.050000true28.598859263.67010330.005555555555555556Cone search capability for table J/MNRAS/471/3398/table2 (Stellar parameters adopted for the MiMeS normal B star sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/471/3398/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/471/3398/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/471/3398/table2?GETtext/xml+votable180.050000true9.242850853.89690750.0055555555555555566/2970 3491 3637 12988 13040 14108 14631 14638 15250 15778 19202 19402 20782 20800 21365 21438 21515 21893 21997 22209 22269 22503 22615 22805 23007 23360 23717 24186 29040 30540 37790 38409 39863 39922 40068 40487 40617 43407 44360 47672 48534https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/471/3398?format=asciidefaultJ/MNRAS/471/3398/table1Stellar parameters adopted for the MiMeS Be star sampleHDHD numbermeta.id;meta.mainintvsiniTRotational velocity from TLUSTYkm/sphys.veloc.rotatfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTeffLLiterature effective temperatureKphys.temperature.effectiveinte_TeffLrms uncertainty on TeffLKstat.errorintloggL? Literature surface gravitylog(cm.s**-2)phys.gravityfloatnullablee_loggL? rms uncertainty on loggLlog(cm.s**-2)stat.errorfloatnullableTeffR? Revised effective temperatureKphys.temperature.effectivefloatnullableloggR? Revised surface gravitylog(cm.s**-2)phys.gravityfloatnullableSpTypeSpectral type from SIMBAD (1)src.spTypecharvsini? Rotational velocity from Fremat et al., 2005A&A...440..305F, Cat. J/A+A/440/305km/sphys.veloc.rotatfloatnullablee_vsini? rms uncertainty on vsinikm/sstat.error;phys.veloc.rotatfloatnullablevsiniSRotational velocity from SIMBAD (1)km/sphys.veloc.rotatfloatu_vsiniTUncertainty flag on vsiniTmeta.code.errorcharu_vsiniNUncertainty flag on vsiniNmeta.code.errorcharvsiniNRotational velocity using NII 3995{AA} linekm/sphys.veloc.rotatfloatRefReference for TeffL and loggL (2)meta.ref;pos.framecharSimbadSimbad column added by the CDSmeta.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.mainJ/MNRAS/471/3398/table2Stellar parameters adopted for the MiMeS normal B star samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHDHD numbermeta.id;meta.mainintTeffEffective temperatureKphys.temperature.effectiveinte_Teff? rms uncertainty on TeffKstat.error;phys.temperature.effectiveintnullablen_Teff[a] Note on Teff (1)meta.notecharloggSurface gravityphys.gravityfloate_logg? rms uncertainty on loggstat.errorfloatnullablen_logg[a] Note on Teff (1)meta.notecharl_vsini[<=] Limit flag on vsinimeta.code.error;phys.veloc.rotatcharvsini? Rotational velocity (2)km/sphys.veloc.rotatintnullablee_vsini? rms uncertainty on vsinikm/sstat.error;phys.veloc.rotatintnullablechit? Micro-turbulent velocitykm/sphys.veloc.microTurbintnullablee_chit? rms uncertainty on chitkm/sstat.errorintnullablezeta? Radial-tangential macroturbulent velocitykm/sspect.dopplerVelocintnullablee_zeta? rms uncertainty on zetakm/sstat.errorintnullableSpTypeSpectral typesrc.spTypecharvsiniMMiMeS rotational velocity obtained from the MiMeS projectkm/sphys.veloc.rotatintvsiniNCurrent rotational velocity of the present study using the NII 3995{AA} linekm/sphys.veloc.rotatintchitC? Current micro-turbulent velocitykm/sphys.veloc.microTurbfloatnullablee_chitC? rms uncertainty on chitCkm/sstat.errorfloatnullableRefReference for Teff and logg (3)meta.ref;pos.framecharSimbadSimbad column added by the CDSmeta.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.mainJ/MNRAS/471/3398/table3Measured equivalent widths of the NII lines in the MiMeS Be and B star samplesHDHD numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSample[Be B] Samplesrc.samplecharn_HD[a] Note on HD (1)meta.notecharEW3995Measured NII equivalent widths at 3995{AA}0.1pmspect.line.eqWidthfloate_EW3995rms uncertainty on EW3995 (2)0.1pmstat.errorfloatEW4447? Measured NII equivalent widths at 4447{AA}0.1pmspect.line.eqWidthfloatnullablee_EW4447? rms uncertainty on EW4447 (2)0.1pmstat.errorfloatnullableEW4601.5? Measured NII equivalent widths at 4601.5{AA}0.1pmspect.line.eqWidthfloatnullablee_EW4601.5? rms uncertainty on EW4601.5 (2)0.1pmstat.errorfloatnullableEW4607.2? Measured NII equivalent widths at 4607.2{AA}0.1pmspect.line.eqWidthfloatnullablee_EW4607.2? rms uncertainty on EW4607.2 (2)0.1pmstat.errorfloatnullableEW4613.9? Measured NII equivalent widths at 4613.9{AA}0.1pmspect.line.eqWidthfloatnullablee_EW4613.9? rms uncertainty on EW4613.9 (2)0.1pmstat.errorfloatnullableEW4621.4? Measured NII equivalent widths at 4621.4{AA}0.1pmspect.line.eqWidthfloatnullablee_EW4621.4? rms uncertainty on EW4621.4 (2)0.1pmstat.errorfloatnullableEW4630.5? Measured NII equivalent widths at 4630.5{AA}0.1pmspect.line.eqWidthfloatnullablee_EW4630.5? rms uncertainty on EW4630.5 (2)0.1pmstat.errorfloatnullableEW5676? Measured NII equivalent widths at 5676{AA}0.1pmspect.line.eqWidthfloatnullablee_EW5676? rms uncertainty on EW5676 (2)0.1pmstat.errorfloatnullableEW5679.6? Measured NII equivalent widths at 5679.6{AA}0.1pmspect.line.eqWidthfloatnullablee_EW5679.6? rms uncertainty on EW5679.6 (2)0.1pmstat.errorfloatnullable