J/A+A/673/A119ivo://CDS.VizieR/J/A+A/673/A119doi:10.26093/cds/vizier.36730119CDSCole-Kodikara E.Barnes S.Weingrill J.Granzer T.2025-08-26T20:00:52Z2023-05-17T08:51:03ZCDS support team

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

cds-question@unistra.fropen-star-clustersvariable-starslate-type-starsphotometryvisible-astronomyOpen clusters serve as a useful tool for calibrating models of the relationship between mass, rotation, and age for stars with an outer convection zone due to the homogeneity of the stars within the cluster. Cluster to cluster comparisons are essential to determine whether the universality of spin-down relations holds. NGC 6709 is chosen as a more distant representative Pleiades-age cluster for which no rotation periods of members have previously been obtained. This cluster is at a distance of over 1 kpc and has two red giant members. Isochrones place the age of the cluster at around 150Myr, or approximately the same age as the Pleiades. Photometry is obtained over a multi-month observing season at the robotic observatory for STELLar Activity (STELLA). After basic processing, point- spread function photometry was derived using Daophot II, and a suite of related software allowed us to create time series of relative magnitude changes for each star. Four time series analysis methods are then applied to these light curves to obtain rotation periods for members stars. We obtain for the first time rotation periods for 45 FGK cluster members of NGC 6709. We plot the Gaia DR3 colors of the member stars against their rotation periods and find a slow-rotating sequence with increasing rotation periods towards redder stars and a smaller clump of rapid rotators that have not yet joined this sequence. NGC 6709 has rotation periods very similar to that of another Pleiades-age open cluster, NGC 2516.2023A&A...673A.119Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/673/A119CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/322 : UCAC4 Catalogue (Zacharias+, 2012)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/673/A119https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/673/A119http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/673/A119https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/673/A119https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/673/A119http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/673/A119GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/673/A119/field (NGC 6709 field all)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/673/A119/field?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/673/A119/field?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/673/A119/field?GETtext/xml+votable180.050000true283.037595310.343963610.0055555555555555566/30635 306381.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/673/A119?format=asciiOpticaldefaultJ/A+A/673/A119/fieldNGC 6709 field allrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMembindicates membersmeta.ref.urlcharGaiaDR3Gaia DR3 identifiermeta.id;meta.mainprimaryUCAC4UCAC4 catalog identifiermeta.idcharRA_ICRSGaia DR3 right ascension (ICRS) at Ep=2016.0degpos.eq.ra;meta.mainDE_ICRSGaia DR3 declination (ICRS) at Ep=2016.0degpos.eq.dec;meta.mainGmagGaia DR3 G band magnitudemagphot.mag;em.optdoubleBPmag? Gaia DR3 BP band magnitudemagphot.mag;em.opt.BdoublenullableRPmag? Gaia DR3 RP band magnitudemagphot.mag;em.opt.Rdoublenullable_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.raindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountdegpos.eq.decindexedBP-RP? Gaia DR3 BP-RP colour indexmagphot.color;em.opt.B;em.opt.RdoublenullablepmRAGaia DR3 proper motion right ascensionmas/yrpos.pm;pos.eq.radoublee_pmRAGaia DR3 error on pmRAmas/yrstat.error;pos.pm;pos.eq.radoublepmDEGaia DR3 proper motion declinationmas/yrpos.pm;pos.eq.decdoublee_pmDEGaia DR3 error on pmDEmas/yrstat.error;pos.pm;pos.eq.decdoubleplxGaia DR3 parallaxmaspos.parallax.trigdoublee_plxGaia DR3 error on parallaxmasstat.error;pos.parallaxdoubleBmag? UCAC4 B-band magnitudemagphot.mag;em.opt.BfloatnullableVmag? UCAC4 V-band magnitudemagphot.mag;em.opt.VfloatnullableV24smag? Daophot II found magnitude in 24s exposuremagphot.mag;em.optfloatnullablee_V24smag? Daophot II variability for 24s exposuremagstat.error;phot.magfloatnullableo_V24smag? Total number of frames star is found in 24s exposuremeta.numberintnullableLC24sShow the light curvemeta.ref.urlcharV120smag? Daophot II found magnitude in 120s exposuremagphot.mag;em.optfloatnullablee_V120smag? Daophot II variability for 120s exposuremagstat.error;phot.magfloatnullableo_V120smag? Total number of frames star is found in 120s exposuremeta.numberintnullableLC120sShow the light curvemeta.ref.urlcharV300smag? Daophot II found magnitude in 300s exposuremagphot.mag;em.optfloatnullablee_V300smag? Daophot II variability for 300s exposuremagstat.error;phot.magfloatnullableo_V300smag? Total number of frames star is found in 300s exposuremeta.numberintnullableLC300sShow the light curvemeta.ref.urlcharJ/A+A/673/A119/membersNGC 6709 members(BP-RP)0Dereddened Gaia DR3 BP-RP colour indexmagphot.color;em.opt.B;em.opt.RfloatB-V? UCAC4 B-V colour indexmagphot.color;em.opt.B;em.opt.Vfloatnullable(B-V)0? Dereddened UCAC4 B-V colour indexmagphot.color;em.opt.B;em.opt.Vdoublenullable(B-V)calc? Calculated (B-V)0 from (BP-RP)0 using Appendix A in Gruner & Barnes (2020, Cat. J/A+A/644/A16)magphot.color;em.opt.B;em.opt.VfloatnullablePer? Selected period from light curvedtime.periodfloatnullablee_Per? Error of period based on FWHM of PDMdstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR3Gaia DR3 identifiermeta.id;meta.mainUCAC4UCAC4 catalog identifiermeta.idcharBin?[y/n] Possibility star is a binary (1)meta.codecharRUWEGaia DR3 re-normalized unit weight errorstat.errordoublePMemb1? Membership from Cantat-Gaudin et al. (2018, Cat. J/A+A/618/A93)meta.code.memberfloatnullablePMemb2? Calculated membership from Gaia DR3 datameta.code.member;meta.modelledfloatnullableBP-RPGaia DR3 BP-RP colour indexmagphot.color;em.opt.B;em.opt.RfloatSimbadNameSimbad column added by the CDSmeta.idcharnullable