J/AJ/144/158ivo://CDS.VizieR/J/AJ/144/158doi:10.26093/cds/vizier.51440158CDSMarsh Boyer A.N.McSwain M.V.Aragona C.Ou-Yang B.2017-06-19T07:56:58Z2013-12-19T13:03:42ZCDS support team

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

cds-question@unistra.fropen-star-clustersb-starsstellar-masseseffective-temperatureWe present a study of the B and Be star populations of the double cluster h and {chi} Persei. Blue optical spectroscopy is used to first measure projected rotational velocity, vsini, effective surface temperature, T_eff_, and surface gravity, logg, for B-type sample stars, while available Stromgren photometry is used to calculate T_eff_ and logg for the Be stars showing emission. In our sample of 104 objects for which we measured these stellar parameters, 28 are known or proposed Be stars. Of these Be stars, 22 show evidence of emission at the times of our observations, and furthermore, we find evidence in our data and the literature for at least 8 transient Be stars in the clusters. We find that the Be stars are not rotating near their critical velocity, contrary to the results of studies of similar open clusters. We compare the results of our analysis with other previous studies and find that the cluster members are more evolved than found by Huang & Gies but still retain much of their initial rotational angular momentum.2012AJ....144..158Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/144/158CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/407/2109 : Kinematic study of open clusters (Vande Putte+, 2010)J/ApJS/186/191 : VI photometry and spectroscopy in h+{chi} Per (Currie+, 2010)J/ApJ/700/1216 : Spectroscopy of Be stars in open clusters (McSwain+, 2009)J/AJ/137/3210 : Chandra observations of h Persei (Currie+, 2009)J/ApJ/672/558 : MIPS observations of h and {chi} Persei (Currie+, 2008)J/ApJ/659/599 : IRAC and JHKs photometry of h and chi Persei (Currie+, 2007)J/ApJ/669/L33 : H{alpha} emission sources in h and {chi} Per (Currie+, 2007)J/ApJ/648/591 : Stellar rotation in young clusters. II. (Huang+, 2006)J/ApJ/648/580 : Rotational velocities in 19 open clusters (Huang+, 2006)J/AJ/129/809 : B-star rotational velocities in h+{chi} Persei (Strom+, 2005)J/ApJ/576/880 : CCD UBV photometry of h and {chi} Per (Slesnick+, 2002)J/A+A/394/479 : uvby{beta} photometry of h and chi Per (Capilla+, 2002)J/PASP/114/233 : h and {chi} Per memberships (Uribe+, 2002)J/AJ/122/248 : h and chi Per UBVI,H{alpha} photometry (Keller+, 2001)J/A+A/372/477 : ubvy{beta} photometry of h + chi Persei (Marco+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/144/158https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/144/158http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/144/158https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/144/158https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/144/158http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/144/158GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/144/158/Bmembers (Physical properties of member B- and Be-stars in h+{chi} Per)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/144/158/Bmembers?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/144/158/Bmembers?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/144/158/Bmembers?GETtext/xml+votable180.050000true34.251018357.09962920.0055555555555555566/3256 3257 3258https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/144/158?format=asciiOpticaldefaultJ/AJ/144/158/BmembersPhysical properties of member B- and Be-stars in h+{chi} PerrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNGC[869/994] Cluster NGC number: 869(h)/894({chi})meta.id.parentintWEBDA[49/2907] WEBDA number in cluster (1)meta.id;meta.mainintr_WEBDA[abc] Reference for binarity (a, b, or c) (2)meta.ref;pos.framecharvsini? Rotational velocitykm/sphys.veloc.rotatintnullablee_vsini? Uncertainty in vsinikm/sstat.error;phys.veloc.rotatintnullableTeff? Effective surface temperatureKphys.temperature.effectiveintnullablee_Teff? Uncertainty in effective temperatureKstat.error;phys.temperature.effectiveintnullablelogg? Surface gravitylog(cm.s**-2)phys.gravityfloatnullablee_logg? Uncertainty in logglog(cm.s**-2)stat.errorfloatnullableloggP? Polar gravity (3)log(cm.s**-2)phys.gravityfloatnullableMass? Stellar masssolMassphys.massfloatnullablee_Mass? Error in stellar masssolMassstat.error;phys.massfloatnullableRad? Stellar radiussolRadphys.size.radiusfloatnullablee_Rad? Error in stellar radiussolRadstat.errorfloatnullableeSimbad column added by the CDSmeta.notecharRef1Reference for no emission observed (4)meta.ref;pos.framecharRef2Reference for emission observed (4)meta.ref;pos.framecharSimbadSimbad column added by the CDSmeta.refchar_RAPositions from SIMBAD database (right ascension part)degpos.eq.ra;meta.main_DEPositions from SIMBAD database (declination part)degpos.eq.dec;meta.main