J/AJ/161/189ivo://CDS.VizieR/J/AJ/161/189doi:10.26093/cds/vizier.51610189CDSLu Y.Angus R.Curtis J.L.David T.J.Kiman R.2022-10-27T11:28:34Z2021-07-15T09:16:45ZCDS support team

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

cds-question@unistra.frstellar-ageseffective-temperaturedwarf-starsvisible-astronomyEstimating stellar ages is important for advancing our understanding of stellar and exoplanet evolution and investigating the history of the Milky Way. However, ages for low-mass stars are hard to infer as they evolve slowly on the main sequence. In addition, empirical dating methods are difficult to calibrate for low-mass stars as they are faint. In this work, we calculate ages for Kepler F, G, and crucially K and M-dwarfs, using their rotation and kinematic properties. We apply the simple assumption that the velocity dispersion of stars increases over time and adopt an age-velocity-dispersion relation (AVR) to estimate average stellar ages for groupings of coeval stars. We calculate the vertical velocity dispersion of stars in bins of absolute magnitude, temperature, rotation period, and Rossby number and then convert velocity dispersion to kinematic age via an AVR. Using this method, we estimate gyro-kinematic ages for 29949 Kepler stars with measured rotation periods. We are able to estimate ages for clusters and asteroseismic stars with an rms of 1.22Gyr and 0.26Gyr respectively. With our Astraea machine-learning algorithm, which predicts rotation periods, we suggest a new selection criterion (a weight of 0.15) to increase the size of the McQuillan et al. catalog of Kepler rotation periods by up to 25%. Using predicted rotation periods, we estimated gyro-kinematic ages for stars without measured rotation periods and found promising results by comparing 12 detailed age-element abundance trends with literature values.2021AJ....161..189Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/161/189CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/130 : Geneva-Copenhagen Survey of Solar neighbourhood III (Holmberg+, 2009)V/133 : Kepler Input Catalog (Kepler Mission Team, 2009)I/337 : Gaia DR1 (Gaia Collaboration, 2016)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/ApJ/695/679 : Stellar rotation in M35 (Meibom+, 2009)J/ApJ/733/L9 : Stellar rotation for 71 NGC 6811 members (Meibom+, 2011)J/ApJ/743/48 : Stars with rotation periods & X-ray luminosities (Wright+,2011)J/ApJ/776/67 : Rotational tracks (van Saders+, 2013)J/A+A/572/A34 : Pulsating solar-like stars in Kepler (Garcia+, 2014)J/ApJS/211/24 : Rotation periods of Kepler MS stars (McQuillan+, 2014)J/AJ/152/113 : Pleiades members with K2 lightcurves.I. Periods (Rebull+, 2016)J/ApJ/822/47 : K2 rotation periods for 65 Hyades members (Douglas+, 2016)J/ApJ/835/173 : Kepler asteroseismic LEGACY sample. II. (Silva Aguirre+, 2017)J/ApJ/839/92 : Praesepe members with K2 light curve data (Rebull+, 2017)J/ApJ/842/83 : Praesepe members rotational periods from K2 LCs (Douglas+,2017)J/AJ/156/18 : APOGEE DR14:Binary comp. of evolved stars (Price-Whelan+,2018)J/ApJ/862/33 : Improved & expanded membership cat. for NGC752 (Agueros+, 2018)J/ApJ/865/68 : Abundances for 79 Sun-like stars within 100pc (Bedell+, 2018)J/MNRAS/474/2580 : Temporal evolution of neutron-capture elements (Spina+,2018)J/A+A/624/A19 : GALAH survey, chemodynamical analyse with TGAS (Buder+, 2019)J/ApJ/871/174 : Kepler rapid rotators and Ks-band excesses (Simonian+, 2019)J/ApJ/878/21 : Vertical motions of APOGEE & Gaia red clump stars (Ting+, 2019)J/ApJ/879/49 : Rotation periods for 171 Gaia memb.of NGC 6811 (Curtis+, 2019)J/ApJ/879/100 : K2 Prot for Hyades & Praesepe members (Douglas+, 2019)J/ApJS/244/21 : Surface rotation & activity of Kepler stars. I. (Santos+, 2019)J/ApJS/245/34 : Abundances for 6 million stars from LAMOST DR5 (Xiang+, 2019)J/MNRAS/482/4570 : Gaia DR2 white dwarf candidates (Gentile Fusillo+, 2019)J/AJ/160/108 : Gaia-Kepler stellar prop. catalog.II. Planets (Berger+, 2020)J/MNRAS/494/2429 : Kinematics of nearby young stars (Binks+, 2020)http://gaia-kepler.fun/ : Cross-matched Gaia data stars observed by Kepler/K2http://exoplanetarchive.ipac.caltech.edu/ : NASA exoplanet archivehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/161/189https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/161/189http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/161/189https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/161/189https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/161/189http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/161/189GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/161/189/table1 (Catalog of the 29949 gyro-kinematic ages with measured rotation periods)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/161/189/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/161/189/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/161/189/table1?GETtext/xml+votable180.050000true291.04336.5940.0055555555555555564/922-923 933-935 944-946 5/3645-3647 3683 3704 3706 3729-3731 3760 3788-3789 3792-3793 6/14559 14567 14573 14575 14577-14579 14730-14731 14738 14744 14746-14747 14749-14751 14792 14794-14795 14822 14828 14830-14831 14914-14915 15044-15045 15056-15057 15059-15062 15160-15161 15176-15178 15200 15202 15232-15233https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/161/189?format=asciiOpticaldefaultJ/AJ/161/189/table1Catalog of the 29949 gyro-kinematic ages with measured rotation periodsGaiaDR2Gaia DR2 designationmeta.id.crosscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICTarget identification number, Kepler Input Catalog (1)meta.id;meta.mainintProt[0.2/68] Rotation period (2)dtime.periodfloate_Prot[0/10] Error on rotation period (2)dstat.errorfloatRA_ICRS[279/302] Right Ascension, Gaia DR2 (ICRS) at Ep=2015.5degpos.eq.ra;meta.mainindexede_RA_ICRS[0.009/0.62] Error on RAdeg from Gaia DR2 (3)degstat.error;pos.eq.rafloatDE_ICRS[36.5/52.5] Declination, Gaia DR2 (ICRS) at Ep=2015.5 (3)degpos.eq.dec;meta.mainindexede_DE_ICRS[0.01/0.7] Arror on DEdeg from Gaia DR2 (3)degstat.error;pos.eq.decfloatWvel[-259/415] Vertical velocity (4)km/sphys.veloc;pos.cartesian.zdoublee_Wvel[0.03/42]? Error on Wvel (4)km/sstat.errorfloatnullablesigma[0.10/137] Velocity dispersion (5)km/sphys.veloc.dispersionfloate_sigma[0/0.07] Error on sigma (5)km/sstat.errorfloatGyroAge[0.002/142] Gyro-kinematic ages (6)Gyrtime.agefloate_GyroAge[1.6/2] Error on GyroAge (6)Gyrstat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlchar_RA.icrsRight ascension (ICRS) at Epoch=J2015.5 (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.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2015.5 (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.decnullableindexedRo[0.005/9.83] Rossby number (5)stat.paramfloatTeff[3351/7970] Effective temperature (5)Kphys.temperature.effectivedoubleGMAG[-0.03/11] Absolute G-band magnitude (5)magphot.magfloat