J/ApJ/822/81ivo://CDS.VizieR/J/ApJ/822/81doi:10.26093/cds/vizier.18220081CDSCovey K.R.Agueros M.A.Law N.M.Liu J.Ahmadi A.Laher R.,Levitan D.Sesar B.Surace J.2023-06-23T16:14:24Z2018-02-20T06:29:42ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryvisible-astronomyphotometrystellar-massesStellar rotation periods (P_rot_) measured in open clusters have proved to be extremely useful for studying stars' angular momentum content and rotationally driven magnetic activity, which are both age- and mass-dependent processes. While P_rot_ measurements have been obtained for hundreds of solar-mass members of the Pleiades, measurements exist for only a few low-mass (<0.5 M_{sun}_) members of this key laboratory for stellar evolution theory. To fill this gap, we report P_rot_ for 132 low-mass Pleiades members (including nearly 100 with M=<0.45 M_{sun}_), measured from photometric monitoring of the cluster conducted by the Palomar Transient Factory in late 2011 and early 2012. These periods extend the portrait of stellar rotation at 125 Myr to the lowest-mass stars and re-establish the Pleiades as a key benchmark for models of the transport and evolution of stellar angular momentum. Combining our new P_rot_ with precise BVIJHK photometry reported by Stauffer et al. (2007, J/ApJS/172/663) and Kamai et al. (2014, J/AJ/148/30), we investigate known anomalies in the photometric properties of K and M Pleiades members. We confirm the correlation detected by Kamai et al. between a star's P_rot_ and position relative to the main sequence in the cluster's color-magnitude diagram. We find that rapid rotators have redder (V-K) colors than slower rotators at the same V, indicating that rapid and slow rotators have different binary frequencies and/or photospheric properties. We find no difference in the photometric amplitudes of rapid and slow rotators, indicating that asymmetries in the longitudinal distribution of starspots do not scale grossly with rotation rate.2016ApJ...822...81Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/822/81CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/258 : Pleiades positions and proper motions (Wang+, 1996)J/A+AS/100/607 : Very low mass proper motion members in PleiadesJ/ApJS/85/315 : F, G and K dwarf stars of the Pleiades (Soderblom+ 1993)J/A+A/323/139 : K magnitude of Pleiades low-mass binaries (Bouvier+ 1997)J/A+A/329/101 : Masses of Pleiades members (Raboud+ 1998)J/MNRAS/313/347 : Pleiades low-mass stars and brown dwarfs (Pinfield+, 2000)J/MNRAS/342/1241 : Low-mass stars in M45 and M44 (Pinfield+, 2003)J/A+A/416/125 : RI photometry in alpha Per and Pleiades (Deacon+, 2004)J/ApJS/172/663 : Infrared observations of the Pleiades (Stauffer+, 2007)J/MNRAS/380/712 : ZYJHK photometry in Pleiades (Lodieu+, 2007)J/MNRAS/408/475 : HATNet Pleiades Rotation Period Catalogue (Hartman+, 2010)J/MNRAS/422/1495 : UKIDSS Galactic Clusters Survey Pleiades membersJ/AJ/148/30 : BVI photometry of 350 Pleiades stars (Kamai+, 2014)J/ApJ/795/161 : Activity and rotation in Praesepe and the HyadesJ/A+A/577/A148 : The Seven Sisters DANCe. I. Pleiades (Bouy+, 2015)J/A+A/596/A113 : The Seven Sisters DANCe. II. Pleiades (Barrado+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/822/81https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/822/81http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/822/81https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/822/81https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/822/81http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/822/81GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/822/81/table4 (POCS Pleiades Periods)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/822/81/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/822/81/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/822/81/table4?GETtext/xml+votable180.050000true52.4946651123.371555140.005555555555555556Cone search capability for table J/ApJ/822/81/table5 (Periods For Field Stars Observed During PTF Pleiades Campaign)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/822/81/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/822/81/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/822/81/table5?GETtext/xml+votable180.050000true51.9487932624.240680550.0055555555555555565/115-116 118-121 123-124 6/439 454-455 459 470-471 488-489 500 504-505 1154 11603.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/822/81?format=asciiOpticalInfrareddefaultJ/ApJ/822/81/table4POCS Pleiades PeriodsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identifier (HHMMSSss-DDMMSSs)meta.id;meta.maincharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainVmag? Johnson V-band magnitudemagphot.mag;em.opt.VfloatnullableSourceVSource of V photometry (Kamai, Stauffer) (1)meta.bibcharKmagK-band magnitudemagphot.mag;em.IR.Kfloate_Kmag? Uncertainty in Kmagmagstat.error;phot.magfloatnullableSourceKSource of K photometry (2MASS, DANCe, Stauffer, UKIDSS)meta.bibcharV-K? V-K color indexmagphot.color;em.opt.V;em.IR.KfloatnullableMassMasssolMassphys.massfloatBin[0/1]? Photometric binary candidate flag (0=no, 1=yes)meta.codeintnullableProt1POCS rotation perioddtime.periodfloatPowerPOCS periodogram peak powerstat.fit.paramfloatAmpPOCS photometric amplitudesrc.var.amplitudefloatEpoch[291/339] POCS epochtime.epochintProt2? HATnet rotation perioddtime.periodfloatnullable2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharJ/ApJ/822/81/table5Periods For Field Stars Observed During PTF Pleiades Campaigne_RptfUncertainty in Rptfmagstat.errorfloatSimbadNameSimbad column added by the CDSmeta.idcharnullableAmpPOCS photometric amplitudesrc.var.amplitudefloatEpoch[291/338] POCS epochtime.epochintStarStar name (or comment)meta.id;meta.maincharn_Star[ab] Note on Star (1)meta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainRptfPTF R-band magnitudemagphot.mag;em.opt.RfloatProtPOCS rotation perioddtime.periodfloatPowerPOCS periodogram peak powerstat.fit.paramfloat