J/AJ/153/128ivo://CDS.VizieR/J/AJ/153/128doi:10.26093/cds/vizier.51530128CDSCummings J.D.Deliyannis C.P.Maderak R.M.Steinhauer A.2019-02-04T06:49:24Z2018-05-30T13:00:05ZCDS support team

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

cds-question@unistra.frmilky-way-galaxyopen-star-clustersmultiple-starsvisible-astronomybroad-band-photometrychemical-abundanceseffective-temperatureline-intensitiesradial-velocityWIYN/Hydra spectroscopy (at R~15000) of the moderately metal-rich Praesepe and Hyades open clusters was used to study their main-sequence (MS) iron ([Fe/H]) and lithium (A(Li)) abundances. Self-consistent [Fe/H] and Li analyses of these clusters of consistent age, which we re-evaluate, confirms that they have consistent [Fe/H] and provides a foundation to investigate the poorly understood G-dwarf and F-dwarf Li-depletions. Neither phenomenon agrees with standard stellar evolution theory, but possible explanations abound. We supplement our A(Li) with previously published results placed on a uniform abundance scale. This creates the largest self-consistently analyzed sample of A(Li) in both the Hyades (90) and Praesepe (110). For each star, high-precision UBVRI photometry was used to determine a 10-color-based T_eff_ and then to test for photometric peculiarities indicated by a large {sigma}_Teff_ (>75 K). The stars that have large {sigma}_Teff_ were predominantly found to be binaries or stars with peculiar (apparent) A(Li). When considering only proper-motion members that have low {sigma}_Teff_ and are also photometrically consistent with the cluster MS fiducial, each cluster has a more tightly defined Li morphology than previously observed and the two clusters' A(Li) are indistinguishable. This suggests that clusters of consistent age and metallicity may have consistent Li-depletion trends across a broad range of T_eff_; no additional major parameters are required, at least for these two clusters. We propose that the combined Hyades and Praesepe data offer more rigorous constraints than does either cluster alone, and we discuss newly revealed features of the combined Li-T_eff_ trend.2017AJ....153..128Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/153/128CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/106/1080 : Lithium in Praesepe (Soderblom+, 1993)J/A+A/310/879 : Hyades binaries (Barrado+, 1996)J/A+A/331/81 : Hyades membership (Perryman+ 1998)J/ApJ/521/682 : Binaries in the Praesepe and Coma clusters (Abt+, 1999)J/A+A/354/881 : Radial velocities of Praesepe + Hyades Am starsJ/AJ/122/1486 : NGC 2451A proper motions and membership (Platais+, 2001)J/A+A/382/899 : BVI photometry in M67 (Stassun+, 2002)J/AJ/124/601 : Absolute positions and proper motions in NGC 188J/AJ/126/2922 : Astrometry and membership in NGC 188 (Platais+, 2003)J/AJ/127/3579 : Radial velocities of Hyades stars (Paulson+, 2004)J/ApJS/159/100 : Temperatures and Rc photometry in the Hyades (Taylor+, 2005)J/A+A/461/509 : Membership and spectroscopy of IC 2391 (Platais+, 2007)J/A+A/484/609 : BVI photometry and proper motions in M67 (Yadav+, 2008)J/AJ/135/2264 : Stellar radial velocities in NGC 188 (Geller+, 2008)J/MNRAS/391/1482 : BVIc photometry of Trumpler 20 (Platais+, 2008)J/A+A/498/949 : Velocities of 1253 F-K dwarfs in open clustersJ/AJ/137/3743 : Spectroscopic binary orbits in NGC 188 (Geller+, 2009)J/AJ/137/5086 : NGC 188 V12 VI light curves (Meibom+, 2009)J/AJ/138/159 : NGC 6819 stellar radial-velocity and photometryJ/ApJ/695/679 : Stellar rotation in M35 (Meibom+, 2009)J/A+A/515/A100 : VI light curves of NGC 1039 solar-type stars (James+, 2010)J/AJ/139/1383 : Radial velocities in M35 (NGC 2168) (Geller+, 2010)J/AJ/139/2034 : NGC 6253 stars equivalent widths (Anthony-Twarog+, 2010)J/A+A/531/A92 : Deep all-sky census of the Hyades (Roeser+, 2011)J/ApJ/733/115 : Rotation periods and membership in M34 (Meibom+, 2011)J/MNRAS/413/1024 : Deep proper-motion survey of Blanco 1 (Platais+, 2011)J/MNRAS/413/2218 : Stellar rotation in Hyades and Praesepe (Delorme+, 2011)J/A+A/541/A150 : Lithium in M67 and Hyades (Pace+, 2012)J/AJ/146/43 : WIYN open cluster study. LV. NGC 6819 (Platais+, 2013)J/AJ/148/38 : WIYN open cluster study. LX. RV survey of NGC 6819J/AJ/148/51 : WIYN Open Cluster. LXI. NGC 6819 photometryJ/AJ/148/61 : WIYN open cluster study. LIX. RVs of NGC 6791J/AJ/148/85 : WIYN open cluster study. LXII. Photometry of M35J/ApJ/784/57 : Photometry and proper motions in Praesepe (Wang+, 2014)J/ApJ/795/161 : Activity and rotation in Praesepe and the HyadesJ/AJ/149/121 : WOCS. LXV. Abundances in NGC 6819 (Lee-Brown+, 2015)J/AJ/150/10 : WOCS. LXVI. Radial velocity survey in M35 (Leiner+, 2015)J/AJ/150/97 : Radial velocities in M67. I. 1278 candidate membersJ/AJ/151/152 : WOCS. LXXI. Spectroscopy of 5 stars in NGC 6791J/AJ/152/192 : WOCS. LXXII. A uvbyCaHb study of NGC 2506https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/153/128https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/153/128http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/153/128https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/153/128https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/153/128http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/153/128GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/153/128/table6 (Stellar Lithium Data for The Hyades)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/128/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/128/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/128/table6?GETtext/xml+votable180.050000true49.35994287.65581060.005555555555555556Cone search capability for table J/AJ/153/128/table7 (Stellar Lithium Data for Praesepe)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/128/table7?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/128/table7?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/128/table7?GETtext/xml+votable180.050000true129.297870619.80367940.0055555555555555565/5886 6/75 309 320 322 325 333 336 337 341 342 348 373 382 483 890 917 1024 1032 1042 1058 1060 1075 4687 4696 4698 4699 4720 4721 17904 23339 23344 23383 23396 23423 23454 23463 23479 23489 23497 23501 23503 23511 23513 23515 23518 23526 23527 23529 23534 23537 23538 23539 23542 23548 24068 24099 24104 24110 24192 24194 24195 24201 24206 24209 24242 24506https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/153/128?format=asciiOpticaldefaultJ/AJ/153/128/table6Stellar Lithium Data for The HyadesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroup[ABCD] Data group (1)meta.codecharIDStar identifier (vB NNN, for most stars in table 6; KW NNN in table 7)meta.id;meta.maincharn_ID[ab] Note on ID (2)meta.notechar(B-V)mean[0.194/1.225] Mean (B-V) color indexmagphot.color;em.opt.B;em.opt.VfloatTeff[4301.9/7623] Effective temperatureKphys.temperature.effectivefloate_Teff[6.3/373.9]? Uncertainty in TeffKstat.error;phys.temperature.effectivefloatnullablen_Teff[*] Note on Teff (only in table 6) (3)meta.notecharEW(Li)[3/121.06]? Lithium equivalent width (m{AA})0.1pmspect.line.eqWidthfloatnullablee_EW(Li)[0.59/5.93]? Uncertainty in EW(Li)0.1pmstat.errorfloatnullableA(Li)[0/3.41] Lithum abundancephys.abundfloate_A(Li)S/N[0.005/0.097]? S/N-based uncertainty for A(Li)stat.errorfloatnullablee_A(Li)Teff[0.01/0.269]? T_eff_-based uncertainty for A(Li)stat.errorfloatnullableS/N[120/1500]? Signal-to-noise ratio per pixelstat.snr;instr.pixelintnullableExp1[150/10945]? Total exposure time (only in table 6)stime.duration;obs.exposureintnullablel_vsini[<] Limit flag on vsinimeta.code.error;phys.veloc.rotatcharvsini[1.5/210]? Rotational broadening (4)km/sspect.line.broad;phys.mol.rotationfloatnullableRV[17.8/64.53]? Radial velocity (5)km/sphys.veloc;pos.heliocentricfloatnullablee_RV[0.06/24.43]? 1{sigma} uncertainty in RVkm/sstat.errorfloatnullableRef[1/9] Reference (6)meta.ref;pos.frameintPrime[yes-] Prime sample member? (7)meta.codechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullableJ/AJ/153/128/table7Stellar Lithium Data for PraesepeSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGroup[ABCD] Data group (1)meta.codecharIDStar identifier (vB NNN, for most stars in table 6; KW NNN in table 7)meta.id;meta.maincharn_ID[ab] Note on ID (2)meta.notechar(B-V)mean[0.194/1.225] Mean (B-V) color indexmagphot.color;em.opt.B;em.opt.VfloatTeff[4301.9/7623] Effective temperatureKphys.temperature.effectivefloate_Teff[6.3/373.9]? Uncertainty in TeffKstat.error;phys.temperature.effectivefloatnullableEW(Li)[3/121.06]? Lithium equivalent width (m{AA})0.1pmspect.line.eqWidthfloatnullablee_EW(Li)[0.59/5.93]? Uncertainty in EW(Li)0.1pmstat.errorfloatnullableA(Li)[0/3.41] Lithum abundancephys.abundfloate_A(Li)S/N[0.005/0.097]? S/N-based uncertainty for A(Li)stat.errorfloatnullablee_A(Li)Teff[0.01/0.269]? T_eff_-based uncertainty for A(Li)stat.errorfloatnullableS/N[120/1500]? Signal-to-noise ratio per pixelstat.snr;instr.pixelintnullableExp2? Total exposure time (only in table 7)time.duration;obs.exposurenullablel_vsini[<] Limit flag on vsinimeta.code.error;phys.veloc.rotatcharvsini[1.5/210]? Rotational broadening (4)km/sspect.line.broad;phys.mol.rotationfloatnullableRV[17.8/64.53]? Radial velocity (5)km/sphys.veloc;pos.heliocentricfloatnullablee_RV[0.06/24.43]? 1{sigma} uncertainty in RVkm/sstat.errorfloatnullableRef[1/9] Reference (6)meta.ref;pos.frameintPrime[yes-] Prime sample member? (7)meta.codechar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullable