J/A+A/612/L2ivo://CDS.VizieR/J/A+A/612/L2doi:10.26093/cds/vizier.36129002CDSKovacs G.2019-05-08T15:17:04Z2018-04-24T07:31:16ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyopen-star-clustersThe distribution of the stellar rotation axes of 113 main sequence stars in the open cluster Praesepe are examined by using current photometric rotation periods, spectroscopic rotation velocities, and estimated stellar radii. Three different samples of stellar rotation data on spotted stars from the Galactic field and two independent samples of planetary hosts are used as control samples to support the consistency of the analysis. Considering the high completeness of the Praesepe sample and the behavior of the control samples, we find that the main sequence F-K stars in this cluster are susceptible to rotational axis alignment. Using a cone model, the most likely inclination angle is 76+/-14{deg} with a half opening angle of 47+/-24{deg}. Non-isotropic distribution of the inclination angles is preferred over the isotropic distribution, except if the rotation velocities used in this work are systematically overestimated. We found no indication of this being the case on the basis of the currently available data.2018A&A...612L...2Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/612/L2CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/MNRAS/456/2260 : K2 Variability Catalogue II (Armstrong+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/612/L2https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/612/L2http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/612/L2https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/612/L2https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/612/L2http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/612/L2GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/612/L2/table1-6 (Stellar rotation data in the Kepler field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/612/L2/table1-6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/612/L2/table1-6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/612/L2/table1-6?GETtext/xml+votable180.050000true280.9945143.474411110.005555555555555556Cone search capability for table J/A+A/612/L2/table1-1 (Stellar rotation data in Praesepe)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/612/L2/table1-1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/612/L2/table1-1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/612/L2/table1-1?GETtext/xml+votable180.050000true128.7484580621.0970.0055555555555555565/1171 1174 6/4678-4679 4691 4700 4702 4709 4720-4722 4724-4726 14578 14583 14585-14586 14734-14735 14750 14753 14761 14763 14771 14775-14776 14779 14781 14816 14818-14819 14824 14926 14931 14933 14935 14949 14958-14961 14967 14971 15041 15044 15057 15107 15112 15121 15123 15126 15131 15143 15146 15148 15152-15154 15156 15158 151683.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/612/L2?format=asciidefaultJ/A+A/612/L2/refsReferencesComCommentsmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.maincharBibCodeBibCodemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharJ/A+A/612/L2/table1-6Stellar rotation data in the Kepler fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKepler Input Catalog numbermeta.id;meta.mainintRAJ2000Right Ascension (J2000.0), from KICdegpos.eq.ra;meta.mainDEJ2000Declination (J2000.0), from KICdegpos.eq.dec;meta.mainProtRotational perioddtime.periodfloatR*Stellar radiussolRadphys.size.radiusfloatlogglog_10 of the surface accelerationlog(cm.s**-2)phot.sbfloatTeffStellar effective temperatureKphys.temperature.effectiveintvsiniEquatorial rotational velocity times sin(i)km/sphys.veloc.rotatfloate_vsiniError of vsinikm/sstat.error;phys.veloc.rotatfloatS1Source of the stellar parameters and vsini, in refs.dat filemeta.bibcharS2Source of the stellar parameters and vsini, in refs.dat filemeta.bibcharS3Source of the stellar parameters and vsini, in refs.dat filemeta.bibcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/612/L2/table1-1Stellar rotation data in PraesepeSimbadNameSimbad column added by the CDSmeta.idcharM44IDOther identifiermeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintK2ID? Kepler K2 EPIC identifier (1)meta.id;meta.mainlongnullableHATIDHATNet identifier (HAT-NNN-NNNNNNN)meta.idcharRAJ2000Right Ascension (J2000.0) (2)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0) (2)degpos.eq.dec;meta.mainVsiniEquatorial rotational velocity times sin(i) (2)km/sphys.veloc.rotatfloate_VsiniError of Vsini (2)km/sstat.error;phys.veloc.rotatfloatProtRotation period indtime.periodfloatVmagJohnson V magnitude (3)magphot.mag;em.opt.VfloatKmag2MASS K magnitude (3)magphot.mag;em.IR.KfloatJ-K2MASS J-K index (3)magphot.color;em.IR.J;em.IR.KfloatRStellar radius (4)solRadphys.size.radiusfloatLStellar luminosity (4)solLumphys.luminosityfloatTeffStellar effective temperature (5)Kphys.temperature.effectiveintn_ProtSource of Prot (6)meta.bibcharNotesVariable type (7)meta.notecharJ/A+A/612/L2/table1-2Stellar rotation data on hot Jupiter host starsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameSystem namemeta.id;pos.framecharPorbOrbital perioddtime.periodfloatvsiniEquatorial rotational velocity times sin(i)km/sphys.veloc.rotatfloate_vsiniError of vsini (1)km/sstat.error;phys.veloc.rotatfloatR*Stellar radius (2)solRadphys.size.radiusfloatTeffStellar effective temperatureKphys.temperature.effectivefloatlogglog_10 of the surface acceleration (2)log(cm.s**-2)phot.sbfloat[Fe/H]Logarithmic iron abundance relative to the Sunphys.abund.FefloatProtRotational perioddtime.periodfloatageStellar age from evolutionary modelsGyrtime.agefloate_ageError of the stellar ageGyrstat.error;time.agefloatS1Source of the stellar parameters and vsini, in refs.dat filemeta.bibcharS2Source of the stellar parameters and vsini, in refs.dat filemeta.bibcharS3Source of the stellar parameters and vsini, in refs.dat filemeta.bibcharNotes[abcd] Individual notes (3)meta.notechar