J/MNRAS/520/5283ivo://CDS.VizieR/J/MNRAS/520/5283CDSGaidos E.Claytor Z.Dungee R.Ali A.Feiden G.A.2026-04-29T14:02:11Z2026-04-29T14:51:13ZCDS support team

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

cds-question@unistra.frvariable-starsexoplanetsstellar-agesm-starslate-type-starsmetallicityeffective-temperatureastronomical-reference-materialsphotometryspectroscopyvisible-astronomyAge is a stellar parameter that is both fundamental and difficult to determine. Among middle-aged M dwarfs, the most prolific hosts of close-in and detectable exoplanets, gyrochronology is the most promising method to assign ages, but requires calibration by rotation-temperature sequences (gyrochrones) in clusters of known ages. We curated a catalogue of 249 late K- and M-type (Teff=3200-4200K) exoplanet host stars with established rotation periods, and applied empirical, temperature-dependent rotation-age relations based on relevant published gyrochrones, including one derived from observations of the 4-Gyr-old open cluster M67. We estimated ages for 227 of these stars, and upper limits for eight others, excluding 14 which are too rapidly rotating or are otherwise outside the valid parameter range of our gyrochronology. We estimated uncertainties based on observed scatter in rotation periods in young clusters, error in the gyrochrones, and uncertainties in temperature and non-solar metallicity. For those stars with measured metallicities, we provide but do not incorporate a correction for the effects of deviation from solar-metallicity. The age distribution of our sample declines to near zero at 10 Gyr, the age of the Galactic disc, with the handful of outliers explainable by large uncertainties. Continued addition or extension of cluster rotation sequences to more thoroughly calibrate the gyrochronology in time and temperature space, more precise and robust measurement of rotation periods, and more accurate stellar parameter measurements will enable continued improvements in the age estimates of these important exoplanet host stars.2023MNRAS.520.5283Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/520/5283CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/519/5271 : New ASAS-SN variable stars using g band lcs (Christy+, 2023)J/MNRAS/491/5216 : Rotation periods for 107 M dwarfs from APACHEJ/MNRAS/474/2094 : Inferring probabilistic stellar rotation periodsJ/MNRAS/457/2877 : Kepler M dwarf stars revised properties (Gaidos+, 2016)J/MNRAS/436/1883 : Properties of KOI host stars (Walkowicz+, 2013)J/MNRAS/411/2099 : Fast-rotating M-dwarf stars in NGC 2547 (Jeffries+, 2011)J/A+A/658/A194 : Stellar parameters of 18 M dwarfs (Passegger+, 2022)J/A+A/639/A127 : Age-chemical-clocks-metallicity relations (Casali+, 2020)J/A+A/638/A20 : M dwarfs X-ray activity and rotation relationsJ/A+A/635/A43 : Stellar rotation periods from K2 Campaigns 0-18J/A+A/560/A4 : Rotation periods of active Kepler stars (Reinhold+, 2013)J/ApJ/923/177 : TESS obs. & rotational periods of T Tauri in OrionJ/ApJ/904/140 : Ruprecht 147 members & rot. data for 5 other cl.J/ApJ/893/67 : Smoothed amplitudes from Kepler, K2 and TESS phot.J/ApJ/888/43 : APOGEE-Kepler Cool Dwarf star ages determinationJ/ApJ/879/100 : K2 rotation periods for Hyades & Praesepe membersJ/ApJ/879/49 : Rotation periods for 171 Gaia members of NGC 6811J/ApJ/871/174 : Kepler rapid rotators and Ks-band excesses (Simonian+, 2019)J/ApJ/780/159 : Rotation-mass-age relationship of old field starsJ/ApJ/776/67 : Rotational tracks (van Saders+, 2013)J/ApJS/255/17 : Surface rotation & activity for Kepler stars. II.J/ApJS/250/20 : Rotation periods in TESS objects of interest (TOIs)J/ApJS/224/2 : K2 EPIC stellar properties for 138600 targets (Huber+, 2016)J/AJ/164/251 : ZTF measured rotational period of 40553 M- or G-dwarfsII/287 : Northern Sky Variability Survey (NSVS) (Wozniak+, 2004)II/264 : ASAS Variable Stars in Southern hemisphereIV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/520/5283https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/520/5283http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/520/5283https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/520/5283https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/520/5283http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/520/5283GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/520/5283/table1 (Cool host stars with established rotation periods)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/520/5283/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/520/5283/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/520/5283/table1?GETtext/xml+votable180.050000true170.1408003-4.80693530.0055555555555555565/3743 3792 6/285 318 404 449 464 1032 1052 1271 1585 1793 2515 2737 3715 4247 4651 4679 4687 4697 4716 4720 4867 4873-4875 5207 5420 5488 6672 7264 7605 9750 10146 10149 10225 10278 11177 11636 11671 11974 12732 12814 14578 14582 14584-14585 14588 14591 14757 14762 14764 14768 14770-14772 14775 14778 14781 14794 14819 14824-14825 14896 14915 14921 14930-14932 14935 14937-14939 14944-14945 14947-14948 14950 14957-14959 14963 14965-14967 15040-15041 15052 15057 15104 15108-15109 15111-15112 15114 15116 15118-15121 15126 15128-15129 15132-15134 15137-15138 15140 15142-15143 15145 15147 15149 15151 15155-15156 15158 15160 15172 15635 15748 15792 16472 16847 18022 18329 18335 18435 18451 18496 18580 18666 18799 19131 20896 21079 21986 22309 22661 24227 24256 24340 24527 24587 25548 25554 25624 25654 26114 26256 26296 26538 26555 26560 26771 26904 26928 26935 26940 26944 26977 27078 27392 27429 27600 27658 27704 27787 28548 30429 30505 30771 31216 32259 32335 32491 33470 33898 33972 34005 34260 34656 34767 35388 36078 36116 36555 36614 36643 37309 37453 37548 38456 38464 39080 40250 40554 40772 42101 42290 42459 44378 44451 44463 44512 44921 45964 46128 46632 48068 48098 48500https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/520/5283?format=asciiOpticaldefaultJ/MNRAS/520/5283/table1Cool host stars with established rotation periodsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameHost star namemeta.id;meta.maincharf_NameBinary flag as yes 32 timesmeta.codecharTeffEffective temperatureKphys.temperature.effectiveint[Fe/H]? Iron to hydrogen abundance ratiolog(Sun)phys.abund.Fe;arith.ratiofloatnullableProtRotation perioddtime.periodfloate_ProtRotatio period uncertaintydstat.errorfloatf_ProtMethod for obtaining rotation period (1)meta.codecharEPICDisplay the Stellar properties of K2 targets of EPIC catalog from Huber et al. 2016ApJS..224....2H, Cat. J/ApJS/224/2meta.ref.urlintnullableKeplerDisplay the Surface rotation & activity for Kepler stars I and II from Santos et al. 2019ApJS..244...21S, Cat. J/ApJS/244/21, 2021ApJS..255...17S, Cat. J/ApJS/255/17meta.ref.urlintnullableK2Display the Stellar rotation periods from K2 Campaigns 0-18 of Reinhold & Hekker 2020A&A...635A..43R, Cat. J/A+A/635/A43meta.ref.urlintnullableTESSDisplay the rotation periods in TESS objects of interest of Canto et al. 2020ApJS..250...20C, Cat. J/ApJS/250/20 and TIC v8.2 catalogmeta.ref.urlintnullableSimbadNameSimbad column added by the CDSmeta.idcharnullableAge? Estimated ageGyrtime.agefloatnullablee_Age? Age uncertaintyGyrstat.error;time.agefloatnullableAgecorr? Metallicity-dependent age correctionGyrarith.factor;time.agefloatnullableFailFlag for age assignment failure as yes 16 timesmeta.codecharUpperFlag for age upper limits as 9 timesmeta.codecharPMSFlag for pre-main sequence star as no 250 timesmeta.code.errorcharn_ProtFlag for lack of a reported period error as yes 20 times (2)meta.notecharInstInstrument key for rotation period (3)meta.notecharr_ProtLiterrature reference for rotation periodmeta.ref;pos.framecharTICTIC identifiersmeta.ref.urlcharGBDisplay ground-based surveys catalog of Newton et al. 2018AJ....156..217N, Cat. J/AJ/156/217, Oelkers et al. 2018AJ....155...39O, Cat. J/AJ/155/39meta.ref.urlintnullableNEADisplay the NEA TOI exoplanet archive data pagemeta.ref.urlcharExoFOPLink to ExoFOP-TESS online data from Exoplanet Follow-up Observing Program websitemeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main