J/ApJ/896/162ivo://CDS.VizieR/J/ApJ/896/162doi:10.26093/cds/vizier.18960162CDSTorres G.Vanderburg A.Curtis J.L.Kraus A.L.Rizzuto A.C.,Ireland M.J.2022-09-21T09:33:16Z2021-11-30T07:57:56ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsphotometryvisible-astronomyspectroscopyradial-velocitySpectroscopic observations are reported for the 2.75 day, double-lined, detached eclipsing binary EPIC 219552514 located at the turnoff of the old nearby open cluster Ruprecht 147. A joint analysis of our radial-velocity measurements and the K2 light curve leads to masses of M1=1.509_-0.056_^+0.063^M_{sun}_ and M2=0.649_-0.014_^+0.015^M_{sun}_ for the primary and secondary, along with radii of R1=2.505_-0.031_^+0.026^R_{sun}_ and R2=0.652_-0.012_^+0.013^R_{sun}_, respectively. The effective temperatures are 6180+/-100K for the F7 primary and 4010+/-170K for the late K secondary. The orbit is circular, and the stars' rotation appears to be synchronized with the orbital motion. This is the third eclipsing system analyzed in the same cluster, following our earlier studies of EPIC 219394517 and EPIC 219568666. By comparison with stellar evolution models from the PARSEC series, we infer an age of 2.67_-0.55_^+0.39^Gyr that is consistent with the estimates for the other two systems. EPIC 219552514 is a hierarchical triple system, with the period of the slightly eccentric outer orbit being 463 days. The unseen tertiary is either a low-mass M dwarf or a white dwarf.2020ApJ...896..162Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/896/162CatalogResearchIsServedByTAP VizieR generic servicerelated-toIX/10 : ROSAT All-Sky Bright Source Catalogue (1RXS) (Voges+ 1999)I/259 : The Tycho-2 Catalogue (Hog+ 2000)II/312 : GALEX-DR5 (GR5) sources from AIS and MIS (Bianchi+ 2011)IV/34 : K2 Ecliptic Plane Input Catalog (EPIC) (Huber+, 2017)I/345 : Gaia DR2 (Gaia Collaboration, 2018)IV/38 : TESS Input Catalog - v8.0 (TIC-8) (Stassun+, 2019)J/ApJ/469/355 : Teff, B-V and BC relation (Flower, 1996)J/AJ/124/1144 : Orbits of 171 single-lined sp. binaries (Latham, 2002)J/A+A/450/681 : Companions to close sp. binaries (Tokovinin+, 2006)J/A+A/512/A54 : Teff and Fbol from Infrared Flux Method (Casagrande+, 2010)J/other/A+ARV/18.67 : Accurate masses and radii of normal stars (Torres+, 2010)J/A+A/529/A75 : Limb-darkening coefficients (Claret+, 2011)J/ApJ/742/123 : Photometry and Velocity of LSPM J1112+7626 (Irwin+, 2011)J/AJ/145/134 : Radial velocities of stars in Ruprecht 147 (Curtis+, 2013)J/MNRAS/454/2863 : Teff against colours calibrations (Huang+, 2015)J/AJ/152/8 : Stellar multiplicity of planetary systems I. (Kraus+, 2016)J/ApJS/222/14 : Planetary cand. from 1st yr K2 mission (Vanderburg+, 2016)J/MNRAS/472/1618 : Kepler study of starspot lifetimes (Giles+, 2017)J/ApJ/836/177 : RVs and R-band obs. of the EB* V541 Cyg (Torres+, 2017)J/AJ/155/173 : K2 light curve for K2-231 (Curtis+, 2018)J/A+A/625/A115 : Ruprecht 147 DANCe. I. (Olivares+, 2019)J/ApJ/887/109 : EBs in Ruprecht 147. II. EPIC 219568666 (Torres+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/896/162https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/896/162http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/896/162https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/896/162https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/896/162http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/896/162GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJ/896/162/table1Detrended K2 photometry of EPIC 219552514recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[57301.48/57382.81] Heliocentric Julian Date; HJD-2400000dtime.epochdoubleRFlux[0.91/1.01] Residual flux (1)stat.fit.residual;phot.fluxdoubleJ/ApJ/896/162/table2Heliocentric radial-velocity measurements of EPIC 219552514recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[57647.6/58744.7] Heliocentric Julian Date; HJD-2400000dtime.epochdoubleRV1[-21.93/104.28] Primary radial velocitykm/sspect.dopplerVelocfloate_RV1[0.19/0.42] Uncertainty in RV1 (1)km/sstat.errorfloatRV2[-98.09/182.93]? Secondary radial velocitykm/sspect.dopplerVelocfloatnullablee_RV2[6.69/14.71]? Uncertainty in RV2 (1)km/sstat.errorfloatnullableInner[0.099/0.901] Inner phase (2)time.phasefloatOuter[0.073/0.982] Outer phase (2)time.phasefloat