Praesepe members with K2 light curve dataJ/ApJ/839/92ivo://CDS.VizieR/J/ApJ/839/92doi:10.26093/cds/vizier.18390092CDSRebull L.M.Stauffer J.R.Hillenbrand L.A.Cody A.M.Bouvier J.,Soderblom D.R.Pinsonneault M.Hebb L.2018-03-12T09:03:46Z2018-01-12T12:10:13ZCDS support teamCDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, Francecds-question@unistra.frvariable-starsphotometryradial-velocityopen-star-clustersWe have Fourier-analyzed 941 K2 light curves (LCs) of likely members of Praesepe, measuring periods for 86% and increasing the number of rotation periods (P) by nearly a factor of four. The distribution of P versus (V-Ks), a mass proxy, has three different regimes: (V-Ks)<1.3, where the rotation rate rapidly slows as mass decreases; 1.3<(V-Ks)<4.5, where the rotation rate slows more gradually as mass decreases; and (V-Ks)>4.5, where the rotation rate rapidly increases as mass decreases. In this last regime, there is a bimodal distribution of periods, with few between ~2 and ~10 days. We interpret this to mean that once M stars start to slow down, they do so rapidly. The K2 period-color distribution in Praesepe (~790Myr) is much different than that in the Pleiades (~125Myr) for late F, G, K, and early-M stars; the overall distribution moves to longer periods and is better described by two line segments. For mid-M stars, the relationship has a similarly broad scatter and is steeper in Praesepe. The diversity of LCs and of periodogram types is similar in the two clusters; about a quarter of the periodic stars in both clusters have multiple significant periods. Multi- periodic stars dominate among the higher masses, starting at a bluer color in Praesepe ((V-Ks)~1.5) than in the Pleiades ((V-Ks)~2.6). In Praesepe, there are relatively more LCs that have two widely separated periods, {Delta}P>6days. Some of these could be examples of M star binaries where one star has spun down but the other has not.2017ApJ...839...92Rhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/839/92CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)I/329 : URAT1 Catalog (Zacharias+ 2015)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/A+A/331/81 : Hyades membership (Perryman+ 1998)J/A+A/361/1011 : F-K evolved stars CaII activity & rotation (Pasquini+, 2000)J/AJ/124/1570 : JHKs photometry in Praesepe (Adams+, 2002)J/AJ/134/2340 : Membership of Praesepe & Coma Berenices (Kraus+, 2007)J/A+A/489/403 : Line abundances for solar stars (Pace+, 2008)J/A+A/498/949 : Vel. of 1253 F-K dwarfs in open clusters (Mermilliod+, 2009)J/MNRAS/408/2457 : Low-mass stars and brown dwarfs in Praesepe (Baker+, 2010)J/MNRAS/413/2218 : Stellar rotation in Hyades and Praesepe (Delorme+, 2011)J/MNRAS/426/3419 : UKIDSS GCS Praesepe members (Boudreault+, 2012)J/MNRAS/434/3236 : Masses of Praesepe members (Khalaj+, 2013)J/MNRAS/432/1203 : Rotation periods of M-dwarf stars (McQuillan+, 2013)J/ApJ/795/161 : Activity & rotation in Praesepe & Hyades (Douglas+, 2014)J/MNRAS/442/2081 : Praesepe members light curves (Kovacs+, 2014)J/ApJ/784/57 : Photometry and proper motions in Praesepe (Wang+, 2014)J/ApJ/833/281 : Candidate rotating M dwarfs from PS1-MDS (Kado-Fong+, 2016)J/ApJ/821/93 : Rotation & kinematics of mid M dwarfs (Newton+, 2016)J/AJ/152/113 : Pleiades members with K2 LCs. I. Periods (Rebull+, 2016)J/AJ/152/114 : Pleiades members with K2 light curves. II. (Rebull+, 2016)J/AJ/152/115 : Pleiades members with K2 LCs. III. (Stauffer+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/839/92https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/839/92http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/839/92https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/839/92https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/839/92http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/839/92GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/839/92/table11 (Outer halo of cluster)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/839/92/table11?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/839/92/table11?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/839/92/table11?GETtext/xml+votable180.050000true123.24712520.24822220.005555555555555556Cone search capability for table J/ApJ/839/92/table12 (Objects with new Keck spectra)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/839/92/table12?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/839/92/table12?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/839/92/table12?GETtext/xml+votable180.050000true127.550541723.22691670.005555555555555556Cone search capability for table J/ApJ/839/92/table1 (Periods and supporting data for Praesepe members with K2 light curves)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/839/92/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/839/92/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/839/92/table1?GETtext/xml+votable180.050000true123.24712520.24822220.005555555555555556Cone search capability for table J/ApJ/839/92/table4 (Likely eclipsing binaries or planets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/839/92/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/839/92/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/839/92/table4?GETtext/xml+votable180.050000true127.874458320.41041670.005555555555555556Cone search capability for table J/ApJ/839/92/table6 (Timescales)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/839/92/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/839/92/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/839/92/table6?GETtext/xml+votable180.050000true126.03887520.02358330.005555555555555556Cone search capability for table J/ApJ/839/92/table7 (Likely pulsators)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/839/92/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/839/92/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/839/92/table7?GETtext/xml+votable180.050000true129.419583319.51841670.005555555555555556Cone search capability for table J/ApJ/839/92/table8 (Non-members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/839/92/table8?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/839/92/table8?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/839/92/table8?GETtext/xml+votable180.050000true127.550541723.22691670.005555555555555556Cone search capability for table J/ApJ/839/92/outliers (Fast and slow outliers in the P versus (V-Ks) plot (tables 9 and 10))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/839/92/outliers?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/839/92/outliers?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/839/92/outliers?GETtext/xml+votable180.050000true124.765333318.71002780.005555555555555556Cone search capability for table J/ApJ/839/92/table5 (Binaries in the literature)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/839/92/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/839/92/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/839/92/table5?GETtext/xml+votable180.050000true129.20419.25733330.0055555555555555564/293 5/1169 1170 1171 1177 1179 1180 1181 1218 6/4335 4344 4346 4347 4349 4351 4637 4639 4659 4673 4674 4675 4704 4705 4707 4712 4713 4728 4729 4730 4732 4733 4734 4800 4805 4816 4817 4818 4896 4897 48987.952274030004205e-20 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/839/92?format=asciiOpticaldefault
J/ApJ/839/92/table11Outer halo of clusterONameOther namemeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPICEPIC identifiermeta.id;meta.mainlongRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainPer? Period(s)dtime.periodcharDist[5/6.4] Distancedegpos.angDistancefloatNotesNotesmeta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar
J/ApJ/839/92/table12Objects with new Keck spectraNotesNotesmeta.notecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPICEPIC identifiermeta.id;meta.mainlongRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainONameOther namemeta.idcharRV[9/37.1] Radial velocitykm/sphys.veloc;pos.heliocentricfloate_RV[0.2/0.5] Radial velocity uncertaintykm/sstat.errorfloatRV2[41.33]? Second value of radial velocitykm/sspect.dopplerVelocfloatnullablee_RV2[0.39]? RV2 uncertaintykm/sstat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar
J/ApJ/839/92/table1Periods and supporting data for Praesepe members with K2 light curvesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPICEcliptic Plane Input Catalog identifiermeta.id;meta.mainlongprimaryRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainONameOther identifiermeta.idcharVmag[6.7/18.5]? Apparent V band Vega magnitude (1)magphot.mag;em.opt.VfloatnullableKsmag[6/15.4]? Apparent Ks band Vega magnitude (1)magphot.mag;em.IR.KfloatnullableV-Ks[0.3/7.8]? The (V-Ks) color index (2)magphot.color;em.opt.V;em.IR.KfloatnullablePPer[0.04/34.3]? Primary period taken to be the rotation perioddtime.periodfloatnullableSPer[0.04/24.6]? Secondary perioddtime.periodfloatnullableTPer[0.04/16.4]? Tertiary perioddtime.periodfloatnullableQPer[0.05/2.7]? Quaternary perioddtime.periodfloatnullableLC[0/0.3]? LC used as best (4)dtime.periodfloatnullableS/MSingle or multi-period star indicator (5)meta.notecharDDDouble-dip LC indicator (163 "yes")meta.codecharDDmovMoving double-dip LC indicator (121 "yes")meta.codecharShchShape changer indicator (297 "yes")meta.codecharBeatFull LC has beating visible indicator (77 "yes") (6)meta.codecharCPeakComplex, structured peak and/or wide peak indicator (68 "yes") (6)meta.codecharCloseResolved close periods indicator (68 "yes") (6)meta.codecharResResolved distant periods indicator (71 "yes") (6)meta.codecharPulPulsator indicator (17 "yes") (6)meta.codecharRVDisplay the new Keck radial velocity measured for this star (table 12)meta.ref.urlintnullableCLink to other data from this paper (tables 4-6, 9-11) for this starmeta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar
J/ApJ/839/92/table4Likely eclipsing binaries or planetsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPICEPIC numbermeta.id;meta.mainlongOName? Other namemeta.idcharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainNotes? Notesmeta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar
J/ApJ/839/92/table6TimescalesEPICEPIC identifiermeta.id;meta.mainlongrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainONameOther name(s)meta.idcharu_TS[~] Uncertainty flag on TSmeta.code.errorcharTSTimescaledtime.scalefloatSimbadSimbad column added by the CDSmeta.ref.urlchar
J/ApJ/839/92/table7Likely pulsatorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPICEPIC identifiermeta.id;meta.mainlongRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainONameOther namemeta.idcharV-Ks[0.4/6.3]? V-Ks color indexmagphot.color;em.opt.V;em.IR.KfloatnullablePerPeriod(s)dtime.periodcharNotesNotesmeta.noteSimbadSimbad column added by the CDSmeta.ref.urlchar
J/ApJ/839/92/table8Non-membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintEPICEPIC identifiermeta.id;meta.mainlongRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainONameOther namemeta.idcharV-Ks[0.4/6.3]? V-Ks color indexmagphot.color;em.opt.V;em.IR.KfloatnullablePerPeriod(s)dtime.periodcharNotesNotesmeta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar
J/ApJ/839/92/outliersFast and slow outliers in the P versus (V-Ks) plot (tables 9 and 10)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCmeta.codecharEPICEPIC identifiermeta.id;meta.mainlongRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainONameOther namemeta.idcharV-Ks[0.4/6.3]? V-Ks color indexmagphot.color;em.opt.V;em.IR.KfloatnullablePerPeriod(s)dtime.periodcharNotesNotesmeta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar
J/ApJ/839/92/table5Binaries in the literaturerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference code (1)meta.notecharEPICEPIC designationmeta.id;meta.mainlongf_EPICFlag on EPIC (2)meta.codecharONameOther namemeta.idcharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainPer? Period(s) from this workdtime.periodcharPer2? Period(s) from Refmeta.notecharNotes? Notesmeta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar