J/ApJ/855/68ivo://CDS.VizieR/J/ApJ/855/68doi:10.26093/cds/vizier.18550068CDSRoman-Lopes A.Roman-Zuniga C.Tapia M.Chojnowski D.,Gomez Maqueo Chew Y.Garcia-Hernandez D.A.Borissova J.Minniti D.,Covey K.R.Longa-Pena P.Fernandez-Trincado J.G.Zamora O.Nitschelm C.2019-03-20T08:19:58Z2019-02-07T14:53:50ZCDS support team

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

cds-question@unistra.frob-starsvisible-astronomyspectroscopyline-intensitiessurveysinfrared-photometrystellar-spectral-typesIn this work, we make use of DR14 APOGEE spectroscopic data to study a sample of 92 known OB stars. We developed a near-infrared semi-empirical spectral classification method that was successfully used in case of four new exemplars, previously classified as later B-type stars. Our results agree well with those determined independently from ECHELLE optical spectra, being in line with the spectral types derived from the "canonical" MK blue optical system. This confirms that the APOGEE spectrograph can also be used as a powerful tool in surveys aiming to unveil and study a large number of moderately and highly obscured OB stars still hidden in the Galaxy.2018ApJ...855...68Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/855/68CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/23 : MK Classification for OB Stars (Lesh 1968)III/112 : Spectral Classes in Kapteyn areas 2-43 (Bartaya, 1983)III/195 : Atlas of Optical Spectral Classif. OB Stars (Walborn+ 1990)III/274 : Galactic O-Star Spectroscopic Survey (GOSSS) (Sota+, 2014)J/ApJS/2/389 : Observations of O and B stars (Hiltner, 1956)J/ApJ/454/151 : OB Associations of the Northern Milky Way (Massey+ 1995)J/ApJ/508/397 : H-band Spectral Standards (Meyer+ 1998)J/A+AS/137/451 : Radial velocities. IX. (Grenier+, 1999)J/ApJ/541/841 : UBV photometry and ages of Trapezium systems (Abt+, 2000)J/ApJ/664/1102 : RV survey of Cyg OB2 association (Kiminki+, 2007)J/A+A/470/161 : UBV photom. of HII regions exciting stars (Russeil+, 2007)J/ApJS/176/216 : MK spectral types of Visual Multiples (Abt, 2008)J/MNRAS/384/1675 : BVRIc photometry of Stock 8 (Jose+, 2008)J/AJ/151/144 : ASPCAP weights for APOGEE chemical elements (Garcia+, 2016)J/MNRAS/461/2288 : Infall motions in massive star-forming regions (He+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/855/68https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/855/68http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/855/68https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/855/68https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/855/68http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/855/68GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/855/68/obstars (OB stars in the APOGEE survey (tables 1 and 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/855/68/obstars?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/855/68/obstars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/855/68/obstars?GETtext/xml+votable180.050000true0.594620662.90088530.0055555555555555566/1332 1355 2544 2940 3037 3042 3055 3058 3231 3235 3239 3247 3307 3331 3336 3337 3622 3714 3715 3722 3724 12914 12943 12965 12986 14173 14228 14273 14298 14303 14304 14310 14311 14353 14387 14402 14412 14414 14456 14581 14622 14645 14692 14751 14777 14824 15146 15382 15478 15481 21465 22088 22211 22249 22253 22258 22264 23668 23962 23982 23984 23993 24456 24496 28852 28882 28890 29095 29100 29113 29114 29190 29441 29456 29513 29525 29866 30216 30293 30299 30302 30358 304721.1166583743361574e-19 1.2918781580533825e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/855/68?format=asciiOpticalInfrareddefaultJ/ApJ/855/68/obstarsOB stars in the APOGEE survey (tables 1 and 2)IDLiterature namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/92] Star, internal running numbermeta.idintAPOGEEAPOGEE ID (2MHHMMSSss+DDMMSSs ; J2000)meta.id;meta.maincharHmag[5.8/10.3]? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableSpTSpectral type, taken from the literaturesrc.spTypecharClassLuminosity classsrc.class.luminositycharQualSpectral type qualifiersrc.spTypecharRef[1/37]? Reference for SpT and Class (see refs.dat file)meta.ref;pos.frameintnullableEW-HI(Br11)[0.5/5.5] Equivalent Width, HI (Br11) in Angstroms units0.1nmspect.line.eqWidth;em.line.HIfloatFWHM-HI(Br11)[11.7/54.4]? Full width half maximum, HI (Br11), in Angstroms units0.1nmspect.line.width;em.line.HIfloatnullableEW-HI(Br13)[0.3/5.3]? Equivalent Width, HI (Br13) in Angstroms units0.1nmspect.line.eqWidth;em.line.HIfloatnullableFWHM-HI(Br13)[13.6/60.6]? Full width half maximum, HI (Br13), in Angstroms units0.1nmspect.line.width;em.line.HIfloatnullableEW-HII(7-12)[0.08/27]? Equivalent Width, HII (7-12) in Angstroms units0.1nmspect.line.eqWidthfloatnullableFWHM-HII(7-12)[6/22]? Full width half maximum, HII (7-12), in Angstroms units0.1nmspect.line.widthfloatnullableEW-HII(7-13)[0.1/0.8]? Equivalent Width, HII (7-13) in Angstroms units0.1nmspect.line.eqWidthfloatnullableFWHM-HII(7-13)[8/26.6]? Full width half maximum, HII (7-13), in Angstroms units0.1nmspect.line.widthfloatnullable2MDisplay the 2MASS data (Cutri+ 2003, II/246) within 1"meta.ref.urlcharSimbadSimbad 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/ApJ/855/68/refsReferencesCommCommentmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRef[1/40] Reference codemeta.noteintAuthAuthor's name(s)meta.bib.authorcharBibCodeBibcode of the referencemeta.bib.bibcodechar