J/ApJ/862/33ivo://CDS.VizieR/J/ApJ/862/33doi:10.26093/cds/vizier.18620033CDSAgueros M.A.Bowsher E.C.Bochanski J.J.Cargile P.A.Covey K.R.,Douglas S.T.Kraus A.Kundert A.Law N.M.Ahmadi A.Arce H.G.2019-08-26T07:33:41Z2019-08-19T07:30:22ZCDS support team

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

cds-question@unistra.fropen-star-clustersinfrared-photometryradial-velocitystellar-spectral-typesstellar-massesvisible-astronomyphotometryThe nearby open cluster NGC 752 presents a rare opportunity to study stellar properties at ages >1Gyr. However, constructing a membership catalog for it is challenging; most surveys have been limited to identifying its giants and dwarf members earlier than mid-K. We supplement past membership catalogs with candidates selected with updated photometric and proper-motion criteria, generating a list of 258 members, a >50% increase over previous catalogs. Using a Bayesian framework to fit MESA Isochrones & Stellar Tracks evolutionary models to literature photometry and the Tycho-Gaia Astrometric Solution data available for 59 cluster members, we infer the age of and distance to NGC 752: 1.34+/-0.06Gyr and 438_-6_^+8^pc. We also report the results of our optical monitoring of the cluster using the Palomar Transient Factory. We obtain rotation periods for 12 K and M cluster members, the first periods measured for such low-mass stars with a well-constrained age >1Gyr. We compare these new periods to data from the younger clusters Praesepe and NGC 6811, and to a theoretical model for angular momentum loss, to examine stellar spin-down for low-mass stars over their first 1.3Gyr. While on average NGC 752 stars are rotating more slowly than their younger counterparts, the difference is not significant. Finally, we use our spectroscopic observations to measure H{alpha} for cluster stars, finding that members earlier than ~M2 are magnetically inactive, as expected at this age. Forthcoming Gaia data should solidify and extend the membership of NGC 752 to lower masses, thereby increasing its importance for studies of low-mass stars.2018ApJ...862...33Ahttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/862/33CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/ocl : Optically visible open clusters & Candidates (Dias+ 2002-2015)I/177 : Proper motions in NGC 752 (Platais 1992)I/259 : The Tycho-2 Catalogue (Hog+ 2000)I/284 : The USNO-B1.0 Catalog (Monet+ 2003)I/315 : UCAC3 Catalogue (Zacharias+ 2009)I/337 : Gaia DR1 (Gaia Collaboration, 2016)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/PASP/106/281 : Photometry and radial velocities in NGC752 (Daniel+, 1994)J/A+A/339/423 : Velocities of red giants in NGC 752 (Mermilliod+ 1998)J/A+A/416/125 : RI photometry in alpha Per and Pleiades (Deacon+, 2004)J/A+A/417/557 : Rotation & variability of PMS Stars in NGC 2264 (Lamm, 2004)J/AJ/132/1517 : Spectroscopy of M dwarfs in Praesepe (Kafka+, 2006)J/AJ/134/2398 : Stellar SEDs in SDSS and 2MASS filters (Covey+, 2007)J/AJ/134/2340 : Membership of Praesepe & Coma Ber clusters (Kraus+, 2007)J/A+A/490/113 : X-ray sources in NGC 752 (Giardino+, 2008)J/ApJ/687/1264 : Age estimation for solar-type dwarfs (Mamajek+, 2008)J/AJ/135/785 : SDSS-DR5 low-mass star spectroscopic sample (West+, 2008)J/BaltA/19/35 : NGC 752 Vilnius photometry (Zdanavicius+, 2010)J/BaltA/20/27 : NGC 752 Vilnius photometry (Bartasiute+, 2011)J/MNRAS/413/2218 : Stellar rotation in Hyades and Praesepe (Delorme+, 2011)J/ApJ/733/L9 : Stellar rotation for 71 NGC 6811 members (Meibom+, 2011)J/AJ/141/97 : SDSS DR7 M dwarfs (West+, 2011)J/AJ/145/134 : Radial velocities of 108 stars in Ruprecht 147 (Curtis+, 2013)J/AJ/145/7 : UBVRI CCD photom. of the open cluster NGC 6811 (Janes+, 2013)J/A+A/558/A53 : MW global survey of star clusters. II. (Kharchenko+, 2013)J/ApJ/795/161 : Activity & rotation in Praesepe & the Hyades (Douglas+, 2014)J/MNRAS/442/2081 : Praesepe members light curves (Kovacs+, 2014)J/MNRAS/446/3562 : Abundances of red giants in NGC752 (Bocek Topcu+, 2015)J/AJ/150/134 : uvbyCaH{beta} photometry of NGC 752 (Twarog+, 2015)J/ApJ/822/81 : PTF stellar rot. periods for Pleiades members (Covey+, 2016)J/ApJ/822/47 : K2 rotation periods for 65 Hyades members (Douglas+, 2016)J/ApJ/830/44 : X-ray luminosities of M37 low-mass stars (Nunez+, 2016)J/ApJ/831/L6 : Eclipsing binary parallaxes with Gaia data (Stassun+, 2016)J/AJ/152/115 : Pleiades members with K2 light curves. III. (Stauffer+, 2016)J/ApJ/842/83 : Praesepe members rot. periods from K2 LCs (Douglas+, 2017)J/ApJ/838/25 : Hectochelle spectroscopy for 776 Kepler stars (Guo+, 2017)J/ApJ/845/72 : The factory & the beehive. III. (Kraus+, 2017)J/ApJ/834/176 : Spectroscopic survey of M37 candidate members (Nunez+, 2017)J/MNRAS/470/3937 : 1876 open clusters multimembership catalog (Sampedro+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/862/33https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/862/33http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/862/33https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/862/33https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/862/33http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/862/33GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/862/33/table4 (Other NGC 752 members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/862/33/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/862/33/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/862/33/table4?GETtext/xml+votable180.050000true27.764637537.77617920.005555555555555556Cone search capability for table J/ApJ/862/33/table6 (NGC 752 rotators (section 4.3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/862/33/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/862/33/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/862/33/table6?GETtext/xml+votable180.050000true28.245458338.06430560.005555555555555556Cone search capability for table J/ApJ/862/33/table3 (Membership probability (P_mem_)-selected NGC 752 members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/862/33/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/862/33/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/862/33/table3?GETtext/xml+votable180.050000true27.569833338.210250.005555555555555556Cone search capability for table J/ApJ/862/33/table2 (Stars identified as members in the literature and as non-members in this Work)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/862/33/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/862/33/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/862/33/table2?GETtext/xml+votable180.050000true29.05812537.78466670.0055555555555555565/609 6/2347 2348 2350 2351 2433 2435 24418.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/862/33?format=asciiInfraredOpticaldefaultJ/ApJ/862/33/table4Other NGC 752 membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS member ID (HHMMSSss+DDMMSSs; J2000)meta.id;meta.maincharP91? Platais (1991A&AS...87...69P, I/177) catalog number; <CL* NGC 752 PLA NNNN> in Simbadmeta.id.crossintnullableJmag[7/14.1]? 2MASS J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag[0.01/0.02]? Uncertainty in Jmagmagstat.error;phot.mag;em.IR.JfloatnullableKsmag[6.4/13.7]? 2MASS Ks band magnitudemagphot.mag;em.IR.Kfloatnullablee_Ksmag[0.02/0.04]? Uncertainty in Ksmagmagstat.error;phot.mag;em.IR.KfloatnullableMass[0.7/1.3]? Derived stellar mass, solar unitssolMassmeta.unit;phys.massfloatnullableSpTSpectral typesrc.spTypecharRVelD[-7.6/7.4]? Radial velocity (1)km/sphys.veloc;pos.heliocentricfloatnullablee_RVelD[0.1/19]? Uncertainty in RVelDkm/sstat.errorfloatnullableRVelP[-11/22.4]? Radial velocity (2)km/sphys.veloc;pos.heliocentricfloatnullableeRVelP1[0.06/34]? First uncertainty in RVelP (3)km/sstat.errorfloatnullableeRVelP2[0.1/36.7]? Second uncertainty in RVelP (4)km/sstat.errorfloatnullableBinBinary flag(s) (G1)meta.codecharDcatDisplay data from Daniel+, 1994, J/PASP/106/281 and Mermilliod+ 1998, J/A+A/339/423 within 2"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.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.mainJ/ApJ/862/33/table6NGC 752 rotators (section 4.3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS member ID (HHMMSSss+DDMMSSs; J2000)meta.id;meta.maincharSpTSpectral type (1)src.spTypecharPmem[52.8/96.5] Membership probability%statfloatKMag[4.3/5.9] Absolute K band magnitude (2)magphys.magAbs;em.IR.KfloatMass[0.4/0.8] Derived stellar mass (3)solMassphys.massfloatRmag[13.9/17.3] Median PTF R band magnitude (4)magphot.mag;em.opt.RfloatNobs[303/695] Number of observationsmeta.numberintPer[5.2/35] Derived perioddtime.periodfloate_Per[0.3/25.1] Uncertainty in Perdstat.errorfloatLCInteractive plotmeta.ref.urlchar_RAPositions from 2MASS names (right ascension part)degpos.eq.ra;meta.main_DEPositions from 2MASS names (declination part)degpos.eq.dec;meta.mainJ/ApJ/862/33/table3Membership probability (P_mem_)-selected NGC 752 membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRmeta.ref.urlintnullableIDMember IDmeta.id.parent;meta.maincharprimaryf_IDFlag on ID (1)meta.codecharP91? Platais (1991A&AS...87...69P, I/177) catalog number; <CL* NGC 752 PLA NNNN> in Simbadmeta.id.crossintnullableJmag[9.5/16.3]? 2MASS J band magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag[0.02/0.1]? Uncertainty in Jmagmagstat.error;phot.mag;em.IR.JfloatnullableKsmag[9.3/15.7]? 2MASS Ks band magnitudemagphot.mag;em.IR.Kfloatnullablee_Ksmag[0.01/0.2]? Uncertainty in Ksmagmagstat.error;phot.mag;em.IR.KfloatnullableMass[0.2/1.4]? Derived stellar mass, solar unitssolMassmeta.unit;phys.massfloatnullableSpTSpectral typesrc.spTypecharDM[6.5/8.5] Derived distance modulusmagphot.mag.distModfloate_DM[0.03/2.6] Uncertainty in DMmagstat.errorfloatMbol[10.2/18.1] Derived bolometric magnitudemagphys.magAbs.bolfloate_Mbol[0.02/0.9] Uncertainty in Mbolmagstat.errorfloatBinBinary flag(s) (G1)meta.codecharPmem[51.2/99.9] Membership probability%statfloatDcatDisplay data from Daniel+, 1994, J/PASP/106/281 within 0.5"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from names (right ascension part)degpos.eq.ra;meta.main_DEPositions from names (declination part)degpos.eq.dec;meta.mainJ/ApJ/862/33/table2Stars identified as members in the literature and as non-members in this WorkeRVel2[0.08/1]? Second uncertainty in RVel (5)km/sstat.error;spect.dopplerVelocfloatnullableBin[1] Candidate binary flagmeta.codecharSet[1/2] Set (1)meta.noteintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS ID (HHMMSSss+DDMMSSs; J2000)meta.id;meta.maincharP91Platais (1991A&AS...87...69P, I/177) catalog number; <CL* NGC 752 PLA NNNN> in Simbadmeta.id.crossintJmag[8.4/13.9] 2MASS J band magnitudemagphot.mag;em.IR.Jfloate_Jmag[0.02/0.03] Uncertainty in Jmagmagstat.error;phot.mag;em.IR.JfloatPmem[0/99.9]? Membership probability (2)%statfloatnullableRVel[-31.5/16.3]? Radial velocity (3)km/sphys.veloc;pos.heliocentricfloatnullableeRVel1[0.1/5]? First uncertainty in RVel (4)km/sstat.error;spect.dopplerVelocfloatnullableDcatDisplay data from Daniel+, 1994, J/PASP/106/281 within 0.5"meta.ref.urlintnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from 2MASS names (right ascension part)degpos.eq.ra;meta.main_DEPositions from 2MASS names (declination part)degpos.eq.dec;meta.main