J/ApJ/787/110ivo://CDS.VizieR/J/ApJ/787/110doi:10.26093/cds/vizier.17870110CDSCasagrande L.Aguirre V.S.Stello D.Huber D.Serenelli A.M.,Cassisi S.Dotter A.Milone A.P.Hodgkin S.Marino A.F.Lund M.N.,Pietrinferni A.Asplund M.Feltzing S.Flynn C.Grundahl F.,Nissen P.E.Schonrich R.Schlesinger K.J.Wang W.2018-01-30T07:18:08Z2015-10-14T09:00:50ZCDS support team

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

cds-question@unistra.frvisible-astronomymedium-band-photometrygiant-starsmultiple-starsmetallicitystellar-massessurveysAsteroseismology has the capability of precisely determining stellar properties that would otherwise be inaccessible, such as radii, masses, and thus ages of stars. When coupling this information with classical determinations of stellar parameters, such as metallicities, effective temperatures, and angular diameters, powerful new diagnostics for Galactic studies can be obtained. The ongoing Stromgren survey for Asteroseismology and Galactic Archaeology (SAGA) has the goal of transforming the Kepler field into a new benchmark for Galactic studies, similar to the solar neighborhood. Here we present the first results from a stripe centered at a Galactic longitude of 74{deg} and covering latitude from about 8{deg} to 20{deg}, which includes almost 1000 K giants with seismic information and the benchmark open cluster NGC 6819. We describe the coupling of classical and seismic parameters, the accuracy as well as the caveats of the derived effective temperatures, metallicities, distances, surface gravities, masses, and radii. Confidence in the achieved precision is corroborated by the detection of the first and secondary clumps in a population of field stars with a ratio of 2 to 1 and by the negligible scatter in the seismic distances among NGC 6819 member stars. An assessment of the reliability of stellar parameters in the Kepler Input Catalog is also performed, and the impact of our results for population studies in the Milky Way is discussed, along with the importance of an all-sky Stromgren survey.2014ApJ...787..110Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/787/110CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)V/117 : Geneva-Copenhagen Survey of Solar neighbourhood (Holmberg+, 2007)J/MNRAS/444/392 : Synthetic Stellar Photometry. I. (Casagrande+, 2014)J/ApJS/215/19 : APOKASC catalog of Kepler red giants (Pinsonneault+, 2014)J/ApJS/211/2 : Stellar properties of Q1-16 Kepler targets (Huber+, 2014)J/A+A/572/A34 : Pulsating solar-like stars in Kepler (Garcia+, 2014)J/A+A/562/A71 : Abundances of solar neighbourhood dwarfs (Bensby+, 2014)J/ApJS/210/1 : Asteroseismic study of solar-type stars (Chaplin+, 2014)J/AJ/146/133 : Stellar param. from SDSS-III APOGEE DR10 (Meszaros+, 2013)J/AJ/146/58 : Eclipse timings for NGC 6819-259 (Jeffries+, 2013)J/AJ/146/43 : WIYN open cluster study. LV. NGC 6819 (Platais+, 2013)J/ApJ/767/127 : Asteroseismic solutions for 77 Kepler stars (Huber+, 2013)J/ApJ/765/L41 : Asteroseismic classification of KIC objects (Stello+, 2013)J/ApJS/204/24 : Kepler planetary candidates. III. (Batalha+, 2013)J/ApJ/761/16 : Sun IR colors from Line-Depth Ratios (Casagrande+, 2012)J/ApJ/749/152 : Asteroseismic analysis of solar-type stars (Mathur+, 2012)J/AJ/144/24 : The Kepler-INT survey (Greiss+, 2012)J/A+A/543/A160 : Normalized spectra of 82 Kepler red giants (Thygesen+, 2012)J/ApJS/199/30 : Eff. temperature scale for KIC stars (Pinsonneault+, 2012)J/A+A/540/A143 : Red giants oscillations observed by Kepler (Mosser+, 2012)J/AcA/62/33 : OGLE II red giant eclipsing binary twins (Nataf+, 2012)J/MNRAS/419/L34 : Surface gravity of late-type stars (Morel+, 2012)J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)J/AJ/142/22 : Heavy-element dispersion in M92 (Roederer+, 2011)J/ApJ/729/L10 : KIC stars properties in NGC 6791 and NGC 6819 (Basu+, 2011)J/A+A/530/A138 : Geneva-Copenhagen survey re-analysis (Casagrande+, 2011)J/MNRAS/412/1210 : Kepler asteroseismic targets (Molenda-Zakowicz+, 2011)J/MNRAS/412/843 : SAGA extremely metal-poor stars (Suda+, 2011)J/A+A/527/A148 : NGC6397 red giants chemical composition (Lind+, 2011)J/A+A/525/A131 : Solar-like oscillations in Kepler red giants (Hekker+, 2011)J/A+A/512/A54 : Teff and Fbol from Infrared Flux Method (Casagrande+, 2010)J/MNRAS/399/323 : Simulated UVEX colors with reddening (Groot+, 2009)J/A+A/505/117 : Abundances of red giants in 15 GCs (Carretta+, 2009)J/AJ/138/159 : NGC 6819 stellar RV and photometry (Hole+, 2009)J/AJ/137/4377 : List of SEGUE plate pairs (Yanny+, 2009)J/A+A/465/357 : Stroemgren phot. in the Draco dSph galaxy (Faria+, 2007)J/MNRAS/373/13 : Lower main-sequence stars parameters (Casagrande+, 2006)J/MNRAS/367/1329 : Elemental abundances for 176 stars (Reddy+, 2006)J/AJ/121/327 : Abundances of Red Clump Stars in NGC6819 (Bragaglia+, 2001)J/A+AS/117/227 : Dwarf effective temperatures (Alonso+ 1996)J/A+AS/106/257 : Stroemgren photometry of F and G stars (Olsen 1994)J/A+AS/104/429 : uvby Photometry of G-type dwarfs (Olsen 1994)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/787/110https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/787/110http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/787/110https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/787/110https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/787/110http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/787/110GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/787/110/table1 (SAGA asteroseismic catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/787/110/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/787/110/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/787/110/table1?GETtext/xml+votable180.050000true295.8898639.49367110.0055555555555555565/3688 3733 3740 6/14589 14591 14731 14760 14762 14937 14939 14940 14942 14958 14959 14964 14968 14969 15044 15045https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/787/110?format=asciiOpticaldefaultJ/ApJ/787/110/table1SAGA asteroseismic catalogfm[0/1] Metallicity flag (4)meta.codeintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKICKepler Input Catalog designationmeta.id;meta.mainintf_KIC[*] Presence of a second signal (1)meta.codecharnumax[0/2003] Frequency of maximum oscillations poweruHzem.freqfloate_numax[0/600] Uncertainty in numaxuHzstat.errorfloatdnu[0.3/111] Large frequency separationuHzem.freq;src.varfloate_dnu[0.01/4.1] Uncertainty in dnuuHzstat.errorfloat[Fe/H][-2.5/1] Stroemgren metallicity (2)log(Sun)phys.abund.Zfloate_[Fe/H][0.1/0.3] Uncertainty in Stroemgren metallicitylog(Sun)stat.error;phys.abund.FefloatTeff[3948/6684] Effective temperature from the infrared flux method (IRFM)Kphys.temperature.effectiveinte_Teff[57/507] Error in TeffKstat.error;phys.temperature.effectiveintRad[1/69.7] Radius from seismologysolRadphys.size.radiusfloatE_Rad[0.01/22.1] Upper error in RadsolRadstat.error;stat.maxfloate_Rad[0.01/14.3] Lower error in RadsolRadstat.errorfloatMass[0.7/3.6] Mass from seismologysolMassphys.massfloatE_Mass[0.02/1.8] Upper error in MasssolMassstat.error;stat.maxfloate_Mass[0.02/1.5] Lower error in MasssolMassstat.error;phys.massfloatlog(g)[0.9/4.3] Log surface gravity from seismologylog(cm.s**-2)phys.gravityfloatE_log(g)[0.001/0.04] Upper error in log(g)log(cm.s**-2)stat.error;stat.maxfloate_log(g)[0.001/0.05] Lower error in log(g)log(cm.s**-2)stat.errorfloatDen[0/0.7] Stellar density in units of solar density (1.4084g/cm^3^)Sunphys.densitydoubleE_Den[0/0.07] Upper error in DenSunstat.error;stat.maxdoublee_Den[0/0.06] Lower error in DenSunstat.errordoubleDist[184/6015] Distance from the Sunpcpos.distance;pos.heliocentricintE_Dist[4/3164] Upper error in Distpcstat.error;stat.maxinte_Dist[4/1173] Lower error in Distpcstat.errorintClassAsteroseismic classification (3)src.classcharfp[0/1] Stroemgren photometry flag (4)meta.codeintb-y[0.2/0.99] Stroemgren b-y indexmagphot.color;em.opt.B;em.opt.Vfloatm1[0.01/0.94] Stroemgren m1 indexmagphot.colorfloatc1[0.02/0.6] Stroemgren c1 indexmagphot.colorfloat_RAPosition from KIC catalog (V/133) (right ascension part)degpos.eq.ra;meta.main_DEPosition from KIC catalog (V/133) (declination part)degpos.eq.dec;meta.main