J/ApJ/923/23ivo://CDS.VizieR/J/ApJ/923/23doi:10.26093/cds/vizier.19230023CDSHealy B.F.McCullough P.R.Schlaufman K.C.2023-06-06T12:04:02Z2023-05-30T08:22:26ZCDS support team

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

cds-question@unistra.fropen-star-clustersstellar-radiivisible-astronomyWe analyze spectroscopic and photometric data to determine the projected inclinations of stars in three open clusters: the Pleiades, Praesepe, and M35. We determine the sini values of 42, 35, and 67 stars in each cluster, respectively, and from their distributions we find that isotropic spins and moderate alignment are both consistent with the Pleiades and Praesepe data. While it is difficult to distinguish between these scenarios for a single cluster, an ensemble of such distributions may facilitate a distinction. The M35 inclination distribution is most consistent with a superposition of isotropic and anisotropic spins, the source of which could be systematic error or a physical grouping of aligned stars. We also study internal cluster kinematics using radial velocities and proper motions. Our kinematics analysis reveals significant plane-of-sky rotation in Praesepe, with a mean velocity of 0.132+/-0.022km/s in a clockwise direction.2021ApJ...923...23Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/923/23CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)II/336 : AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)II/335 : Revised cat. of GALEX UV sources (GUVcat_AIS GR6+7) (Bianchi+ 2017)I/345 : Gaia DR2 (Gaia Collaboration, 2018)I/350 : Gaia EDR3 (Gaia Collaboration, 2020)II/365 : The CatWISE2020 cat. (updated version 28-Jan-2021) (Marocco+, 2021)J/A+A/360/472 : Proper motions in omega Centauri (van Leeuwen+, 2000)J/ApJ/546/1006 : VRI photometry of M35 (Barrado y Navascues+, 2001)J/ApJ/695/679 : Stellar rotation in M35 (Meibom+, 2009)J/A+A/498/949 : Vel. of F-K dwarfs in open clusters (Mermilliod+, 2009)J/AJ/139/1383 : Radial velocities in M35 (NGC 2168) (Geller+, 2010)J/MNRAS/402/1380 : Rot. velocities in Pleiades and {alpha}Per (Jackson+, 2010)J/MNRAS/434/3236 : Masses of Praesepe members (Khalaj+, 2013)J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)J/A+A/564/A125 : AGN Torus model comparison of AGN in CDFS (Buchner+, 2014)J/MNRAS/442/2081 : Praesepe members light curves (Kovacs+, 2014)J/AJ/148/85 : WIYN open cluster study. LXII. M35 phot. (Thompson+, 2014)J/AJ/150/10 : WOCS. LXVI. Radial velocity survey in M35 (Leiner+, 2015)J/AJ/152/114 : Pleiades members with K2 light curves. II. (Rebull+, 2016)J/A+A/597/A63 : Slow-rotator sequence radii (Lanzafame+, 2017)J/ApJ/839/92 : Praesepe members with K2 light curve data (Rebull+, 2017)J/AJ/153/101 : Pleiades members stellar properties (Somers+, 2017)J/A+A/618/A93 : Gaia DR2 open clusters in the MW (Cantat-Gaudin+, 2018)J/A+A/616/A12 : Gaia DR2 sources in GC and dSph (Gaia Collaboration+, 2018)J/A+A/612/L2 : Compilation of stellar rotation data (Kovacs, 2018)J/A+A/622/A133 : M45, M44 and M67 flare stars (Ilin+, 2019)J/MNRAS/483/1125 : Radius inflation in Praesepe M-dwarfs (Jackson+, 2019)J/A+A/628/A66 : alpha Persei, Pleiades and Praesepe clusters (Lodieu+, 2019)J/ApJ/899/55 : Parameters of protoplanetary disks in 5 SFRs (Aizawa+, 2020)J/A+A/642/A115 : CARMENES input catalogue of M dwarfs. V. (Cifuentes+, 2020)J/ApJ/903/99 : Stellar spins in the open cluster NGC 2516 (Healy+, 2020)J/ApJS/246/15 : K2 periodic var. in M35 & NGC2158 (Soares-Furtado+, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/923/23https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/923/23http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/923/23https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/923/23https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/923/23http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/923/23GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/923/23/table1 (Basic parameters for each cluster in this study)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/923/23/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/923/23/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/923/23/table1?GETtext/xml+votable180.050000true56.5843824.14470.005555555555555556Cone search capability for table J/ApJ/923/23/table3 (Relevant quantities and determinations of Pleiades, Praesepe and M35 inclinations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/923/23/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/923/23/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/923/23/table3?GETtext/xml+votable180.050000true56.728918631435624.79613451999570.0055555555555555565/118 6/449 459 461-463 480 484-485 496 4687 4696 4698-4699 4702 4720-4721 4725 24339 24344-24345https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/923/23?format=asciiOpticaldefaultJ/ApJ/923/23/table1Basic parameters for each cluster in this studyrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameCluster namemeta.id;meta.maincharGLON[166.428/205.964] Galactic longitudedegpos.galactic.lonGLAT[-23.602/32.415] Galactic latitudedegpos.galactic.latDist[134.8/838] Gaia EDR3 distancepcpos.distance;pos.heliocentricfloate_Dist[1.3/37] Dist uncertaintypcstat.errorfloatAgeAge rangeMyrtime.agecharr_AgeReference on Age (1)meta.ref;pos.framecharu_Mass[~] Uncertainty flag on Massmeta.code.error;phys.masscharMassMasssolMassphys.massintr_Mass[4/6] Reference on Mass (1)meta.refintSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.raindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decindexedClAbbreviated name as used in Table 3; column added by CDSmeta.idcharprimaryNsNumber of stars with relevant measurements in this cluster (link to Table 3)meta.numberintnullableJ/ApJ/923/23/table3Relevant quantities and determinations of Pleiades, Praesepe and M35 inclinationsGaiaGaia DR2 identifiermeta.id;meta.mainClCluster identifiermeta.idchar_RA.icrsRight ascension (ICRS) at Epoch=J2016. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.raindexed_DE.icrsDeclination (ICRS) at Epoch=J2016. (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)degpos.eq.decindexedsini[0.12/1.7] Projected inclinationsrc.orbital.inclinationfloatSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRS[53.88/131.4] Gaia EDR3 right Ascension (ICRS) at Epoch=2016.0degpos.eq.ra;meta.mainDE_ICRS[18.8/25.4] Gaia EDR3 declination (ICRS) at Epoch=2016.0degpos.eq.dec;meta.mainTeff[4922/6900] Effective temperatureKphys.temperature.effectiveinte_Teff[11/250] Uncertainty in TeffKstat.error;phys.temperature.effectiveintRad[0.66/1.5] RadiussolRadphys.size.radiusfloate_Rad[0.0027/0.02] Uncertainty in RadsolRadstat.errorfloatvsini[5.1/46] Projected rotational velocitykm/sphys.veloc.rotatfloate_vsini[0.3/17] Uncertainty in vsinikm/sstat.error;phys.veloc.rotatfloatPer[0.5/9.4] Spin perioddtime.perioddoublee_Per[0.0003/0.1] Uncertainty in Perdstat.errordoubleE_sini[0.006/0.9] Upper uncertainty in sinistat.error;stat.maxfloate_sini[0.007/0.9] Lower uncertainty in sinistat.errorfloatCG18Display data from Cantat-Gaudin+, 2018, J/A+A/618/A93meta.ref.urlintnullable