J/A+A/384/473ivo://CDS.VizieR/J/A+A/384/473doi:10.26093/cds/vizier.33840473CDSLenorzer A.Vandenbussche B.Morris P.de Koter A.Geballe T.,Waters L.B.F.M.Hony S.Kaper L.2002-03-18T10:57:48Z2002-03-18T11:57:30ZCDS support team

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

cds-question@unistra.frearly-type-starsbe-starsline-intensitiesinfrared-astronomyspectroscopyWe present an atlas of spectra of O- and B-type stars, obtained with the Short Wavelength Spectrometer (SWS) during the Post-Helium program of the Infrared Space Observatory (ISO). This program is aimed at extending the Morgan & Keenan (1973ARA&A..11...29M) classification scheme into the near-infrared. Later type stars will be discussed in a separate publication. The observations consist of 57 SWS Post-Helium spectra from 2.4 to 4.1{mu}m, supplemented with 10 spectra acquired during the nominal mission with a similar observational setting. For B-type stars, this sample provides ample spectral coverage in terms of subtype and luminosity class. For O-type stars, the ISO sample is coarse and therefore is complemented with 8 UKIRT L'-band observations. In terms of the presence of diagnostic lines, the L'-band is likely the most promising of the near-infrared atmospheric windows for the study of the physical properties of B stars. Specifically, this wavelength interval contains the Br{alpha}, Pf{gamma}, and other Pfund lines which are probes of spectral type, luminosity class and mass loss. Here, we present simple empirical methods based on the lines present in the 2.4 to 4.1{mu}m interval that allow the determination of i) the spectral type of B dwarfs and giants to within two subtypes; ii) the luminosity class of B stars to within two classes; iii) the mass-loss rate of O stars and B supergiants to within 0.25dex.2002A&A...384..473Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/384/473CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/384/473https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/384/473http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/384/473https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/384/473https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/384/473http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/384/473GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/384/473/tablea3 (Equivalent widths of helium lines in normal O- and B-type stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/384/473/tablea3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/384/473/tablea3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/384/473/tablea3?GETtext/xml+votable180.050000true300.87249636.025140.005555555555555556Cone search capability for table J/A+A/384/473/tablea5 (Equivalent widths of hydrogen lines of B emission line stars (no stands for not measured))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/384/473/tablea5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/384/473/tablea5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/384/473/tablea5?GETtext/xml+votable180.050000true308.1940.6602780.005555555555555556Cone search capability for table J/A+A/384/473/tablea6 (Equivalent widths of helium, oxygen and iron lines of B emission line stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/384/473/tablea6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/384/473/tablea6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/384/473/tablea6?GETtext/xml+votable180.050000true308.1940.6602780.005555555555555556Cone search capability for table J/A+A/384/473/tablea4 (Equivalent widths of hydrogen lines in normal O- and B- type stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/384/473/tablea4?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/384/473/tablea4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/384/473/tablea4?GETtext/xml+votable180.050000true98.0387824.823530.005555555555555556ISO6/1558 3030 3430 9680 11599 12865 12943 12988 13292 13963 14055 14522 14625 14631 14636 14646 14690 14692 14712 14824 15392 15396 15479 15624 15672 15745 15747 16131 16144 19017 21316 21438 22249 22854 22862 23637 23717 25659 30114 30718 33361 34896 35077 35095 37231 37930 38016 39671 39831 39853 39863 42366 43531 45964 46615 46802https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/384/473?format=asciiInfrareddefaultJ/A+A/384/473/tablea3Equivalent widths of helium lines in normal O- and B-type starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharSimbadask the SIMBAD data-base about this objectmeta.refcharSpTypeSpectal typesrc.spTypecharHeI(6f-4d)? HeI(6f-4d) 2.6192{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_HeI(6f-4d)? rms uncertainty on HeI(6f-4d) ?0.1nmstat.errorfloatnullableHeII(9-7)? HeII(9-7) 2.8260{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_HeII(9-7)? rms uncertainty on HeII(9-7)0.1nmstat.errorfloatnullableHeII(7-6)? HeII(7-6) 3.0917{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_HeII(7-6)? rms uncertainty on HeII(7-6)0.1nmstat.errorfloatnullableHeI(5d-4p)? HeI(5d-4p) 3.7036{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_HeI(5d-4p)? rms uncertainty on HeI(5d-4p)0.1nmstat.errorfloatnullableHeI(5f-4d)? HeI(5f-4d) 4.0377{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_HeI(5f-4d)? rms uncertainty on HeI(5f-4d)0.1nmstat.errorfloatnullable_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/384/473/tablea5Equivalent widths of hydrogen lines of B emission line stars (no stands for not measured)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharSimbadask the SIMBAD data-base about this objectmeta.refcharSpTypeSpectal typesrc.spTypecharBr{beta}? Brackett {beta} 2.6258{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Br{beta}? rms uncertainty on Br{beta}0.1nmstat.errorfloatnullablePf(13-5)? Pfund (13-5) 2.6751{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablen_Pf(13-5)[n] n: nometa.notechare_Pf(13-5)? rms uncertainty on Pf(13-5)0.1nmstat.errorfloatnullablePf(11-5)? Pfund (11-5) 2.8730{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Pf(11-5)? rms uncertainty on Pf(11-5)0.1nmstat.errorfloatnullablePf{delta}? Pfund {delta} 3.2970{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablen_Pf{delta}[n] n: nometa.notechare_Pf{delta}? rms uncertainty on Pf{delta}0.1nmstat.errorfloatnullablePf{gamma}? Pfund {gamma} 3.7406{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Pf{gamma}? rms uncertainty on Pf{gamma}0.1nmstat.errorfloatnullableHu(14-6)? Humphreys (14-6) 4.0209{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Hu(14-6)? rms uncertainty on Hu(14-6)0.1nmstat.errorfloatnullableBr{alpha}? Brackett {alpha} 4.0523{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Br{alpha}? rms uncertainty on Br{alpha}0.1nmstat.errorfloatnullable_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/384/473/tablea6Equivalent widths of helium, oxygen and iron lines of B emission line starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharSimbadask the SIMBAD data-base about this objectmeta.refcharSpTypeSpectal typesrc.spTypecharHeI1? He I 2.6192{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_HeI1? rms uncertainty on HeI10.1nmstat.errorfloatnullableOI1? O I 2.8935{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_OI1? rms uncertainty on OI10.1nmstat.errorfloatnullableFeII1? Fe II 3.0813{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_FeII1? rms uncertainty on FeII10.1nmstat.errorfloatnullableOI2? O I 3.6617{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_OI2? rms uncertainty on OI20.1nmstat.errorfloatnullableHeI2? He I 3.7036{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_HeI2? rms uncertainty on HeI20.1nmstat.errorfloatnullableFeII2? Fe II 3.9378{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_FeII2? rms uncertainty on FeII20.1nmstat.errorfloatnullableHeI3? He I 4.0377{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_HeI3? rms uncertainty on HeI30.1nmstat.errorfloatnullable_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/384/473/tablea4Equivalent widths of hydrogen lines in normal O- and B- type starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharSimbadask the SIMBAD data-base about this objectmeta.refcharSpTypeSpectal typesrc.spTypecharBr{beta}? Brackett {beta} 2.6258{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Br{beta}? rms uncertainty on Br{beta}0.1nmstat.errorfloatnullablePf(13-5)? Pfund (13-5) 2.6751{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Pf(13-5)? rms uncertainty on Pf(13-5)0.1nmstat.errorfloatnullablePf(11-5)? Pfund (11-5) 2.8730{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Pf(11-5)? rms uncertainty on Pf(11-5)0.1nmstat.errorfloatnullablePf{beta}? Pfund {beta} 3.2970{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Pf{beta}? rms uncertainty on Pf{beta}0.1nmstat.errorfloatnullablePf{gamma}? Pfund {gamma} 3.7406{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Pf{gamma}? rms uncertainty on Pf{gamma}0.1nmstat.errorfloatnullableBr{alpha}? Brackett {alpha} 4.0523{mu}m equivalent width0.1nmspect.line.eqWidthfloatnullablee_Br{alpha}? rms uncertainty on Br{alpha}0.1nmstat.errorfloatnullable_RAPosition (from Simbad) (right ascension part)degpos.eq.ra;meta.main_DEPosition (from Simbad) (declination part)degpos.eq.dec;meta.main