J/ApJ/860/1ivo://CDS.VizieR/J/ApJ/860/1doi:10.26093/cds/vizier.18600001CDSGraczyk D.Pietrzynski G.Thompson I.B.Gieren W.Pilecki B.,Konorski P.Villanova S.Gorski M.Suchomska K.Karczmarek P.,Stepien K.Storm J.Taormina M.Kolaczkowski Z.Wielgorski P.,Narloch W.Zgirski B.Gallenne A.Ostrowski J.Smolec R.Udalski A.,Soszynski I.Kervella P.Nardetto N.Szymanski M.K.Wyrzykowski L.,Ulaczyk K.Poleski R.Pietrukowicz P.Kozlowski S.Skowron J.Mroz P.2019-09-16T13:48:46Z2019-06-28T07:12:46ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsmagellanic-cloudsradial-velocitymetallicityinfrared-photometryvisible-astronomyphotometryWe present a determination of the precise fundamental physical parameters of 20 detached, double-lined, eclipsing binary stars in the Large Magellanic Cloud (LMC) containing G- or early K-type giant stars. Eleven are new systems; the remaining nine are systems already analyzed by our team for which we present updated parameters. The catalog results from our long-term survey of eclipsing binaries in the Magellanic Clouds suitable for high-precision determination of distances (the Araucaria Project). The V-band brightnesses of the systems range from 15.4 to 17.7mag, and their orbital periods range from 49 to 773days. Six systems have favorable geometry showing total eclipses. The absolute dimensions of all eclipsing binary components are calculated with a precision of better than 3%, and all systems are suitable for a precise distance determination. The measured stellar masses are in the range 1.4 to 4.6M_{sun}_, and comparison with the MESA isochrones gives ages between 0.1 and 2.1Gyr. The systems show an age-metallicity relation with no evolution of metallicity for systems older than 0.6Gyr, followed by a rise to a metallicity maximum at age 0.5Gyr and then a slow metallicity decrease until 0.1Gyr. Two systems have components with very different masses: OGLE LMC-ECL-05430 and OGLE LMC-ECL-18365. Neither system can be fitted by a single stellar evolution isochrone, explained by a past mass transfer scenario in the case of ECL-18365 and a gravitational capture or hierarchical binary merger scenario in the case of ECL-05430. The longest-period system, OGLE LMC SC9_230659, shows a surprising apsidal motion that shifts the apparent position of the eclipses. This is a clear sign of a physical companion to the system; however, neither investigation of the spectra nor light-curve analysis indicates a third-light contribution larger than 2%-3%. In one spectrum of OGLE LMC-ECL-12669, we noted a peculiar dimming of one of the components by 65% well outside of the eclipses. We interpret this observation as arising from an extremely rare occultation event, as a foreground Galactic object covers only one component of an extragalactic eclipsing binary.2018ApJ...860....1Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/860/1CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVI/120 : High-resolution synthetic stellar library (Coelho+, 2005)J/AJ/106/2096 : Limb-darkening coefficients in binaries (Van Hamme 1993)J/ApJ/469/355 : Teff, B-V and BC relation (Flower, 1996)J/A+A/339/858 : Calibration of stellar parameters (Di Benedetto 1998)J/AJ/119/1448 : Improved properties for cool stars (Houdashelt+, 2000)J/AcA/50/421 : OGLE-II DIA BUL_SC1 field (Wozniak, 2000)J/AcA/53/1 : OGLE eclipsing binaries in LMC (Wyrzykowski+, 2003)J/AJ/131/2514 : Radial velocities of red giants in the SMC (Harris+, 2006)J/MNRAS/371/879 : Effective temperatures of 215 FGK giants (Kovtyukh+, 2006)J/A+A/450/735 : Effective temperatures and radii of stars (Masana+, 2006)J/AJ/134/1963 : MACHO r,b LCs of MC eclipsing binaries (Faccioli+, 2007)J/A+A/475/1003 : Stellar parameters of G and K giant stars (Hekker+, 2007)J/A+A/490/625 : Abundances of NGC 6121 red giants (Marino+, 2008)J/AJ/135/209 : Rotational and radial vel. 761 HIP giants (Massarotti+, 2008)J/A+A/497/497 : Physical parameters from JHK flux (Gonzalez-Hernandez+, 2009)J/AJ/138/1243 : The star formation history of the LMC (Harris+, 2009)J/A+A/512/A54 : Teff and Fbol from Infrared Flux Method (Casagrande+, 2010)J/AcA/61/103 : VI light curves of LMC eclipsing binaries (Graczyk+, 2011)J/ApJS/193/1 : UBVRIJHK color-temperature calibration (Worthey+, 2011)J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)J/MNRAS/436/953 : OGLE-LMC-CEP-0227 RV and VI[3.6] curves (Pilecki+, 2013)J/A+A/557/A119 : Eclipsing binary system LL Aquarii (Southworth, 2013)J/ApJ/780/59 : The Araucaria project: EBs in SMC (Graczyk+, 2014)J/ApJ/832/121 : 4-yr RV survey of red giant in EBs (Gaulme+, 2016)J/AcA/66/405 : Gal. bulge eclipsing & ellipsoidal bin. (Soszynski+, 2016)J/AJ/153/261 : Red giant stellar parameters in the LMC bar (Song+, 2017)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/860/1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/860/1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/860/1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/860/1https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/860/1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/860/1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/860/1/targets (Target star parameters (Table 1) and spectroscopic light ratios at 5500{AA} (Table 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/860/1/targets?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/860/1/targets?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/860/1/targets?GETtext/xml+votable180.050000true73.0636667-68.31952780.0055555555555555565/8274 6/33053 33077 33079 33093 33100 33106 33124 375383.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/860/1?format=asciiInfraredOpticaldefaultJ/ApJ/860/1/targetsTarget star parameters (Table 1) and spectroscopic light ratios at 5500{AA} (Table 3)NewNew?meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNvNumber of velocity measurements for this target (link to Table 2)meta.numberintnullableVPVelocity Plotmeta.ref.urlcharOGLEOGLE identifier from Graczyk+ 2011, J/AcA/61/103meta.id;meta.maincharprimaryf_OGLEFlag(s) on OGLE (1)meta.codecharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainVmag[15.8/17.7] Observed Johnson V-band magnitudemagphot.mag;em.opt.VfloatV-I[1/1.4] V-I color indexmagphot.color;em.opt.V;em.opt.IfloatV-K[2.2/3.3] V-K color indexmagphot.color;em.opt.V;em.IR.KfloatJ-K[0.5/0.9] J-K color index; in 2MASS photometric systemmagphot.color;em.IR.J;em.IR.KfloatPobs[49.4/772.6] Orbital perioddtime.periodfloatT0[1141.1/5570.7] Epoch of primary minimum; HJD-2450000dtime.epochfloatRefReference(s) (2)meta.ref;pos.framecharClMmCluster membermeta.id.parentcharI2/I1[0.1/4.4] Line intensity I_2_/I_1_ (3)spect.line.intensity;arith.ratiofloate_I2/I1[0.01/0.4] I2/I1 uncertaintystat.errorfloatk21[0.6/1.2] Correction k_21_arith.factorfloate_k21[0.02/0.03] k21 uncertainty (see Section 3.2)stat.errorfloatL2/L1[0.2/3.5] Light ratio L_2_/L_1_phys.luminosity;arith.ratiofloate_L2/L1[0.01/0.3] L2/L1 uncertaintystat.error;phys.abundfloatSimbadSimbad column added by the CDSmeta.ref.urlcharJ/ApJ/860/1/table2The radial velocity measurementsInstInstrumentmeta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOGLEOGLE identifiermeta.id;meta.maincharHJD[3989.9/7658.9] Heliocentric Julian Date; HJD-2450000dtime.epochdoubleRV1[208/335] Radial velocity, first componentkm/sspect.dopplerVelocfloate_RV1[0.2/0.9] Uncertainty in RV1km/sstat.errorfloatRV2[205.3/343.8] Radial velocity, second componentkm/sspect.dopplerVelocfloate_RV2[0.1/1] Uncertainty in RV2km/sstat.errorfloatJ/ApJ/860/1/table4Atmospheric parametersf_logga=fixed valuemeta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOGLEOGLE identifiermeta.id;meta.maincharprimaryn_OGLEp=primary; s=secondarymeta.notecharTeffSpectroscopic effective temperature (section 3.3)Kphys.temperature.effectiveintf_Teffa=fixed valuemeta.codecharloggLog of surface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H][-1/0.2] Metallicityphys.abund.ZfloatVtMicroturbulent velocitykm/sphys.velocfloatf_Vta=fixed valuemeta.codecharVmt[3.6/5.5] Macroturbulent velocitykm/sphys.velocfloatTseff[4360/5500] Effective temperature from Kovtyukh+ (2006) calibration (Section 3.5)Kphys.temperature.effectiveintTceff[4305/5480] Color temperature (Section 3.5)Kphys.temperatureintTbeff[4310/5535] Temperature derived from the bolometric flux scaling (Section 4)Kphys.temperatureint[Fe/H]C[-0.8/0.03] Corrected metallicity used throughout the paperphys.abund.Fefloat