A turn-offdetached binary star V568 Lyr in the Kepler field of the oldest open cluster (NGC 6791) in the Galaxy

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dc.contributor.authorYakut K.
dc.contributor.authorEggleton P.P.
dc.contributor.authorKalomeni B.
dc.contributor.authorTout C.A.
dc.contributor.authorEldridge J.J.
dc.date.accessioned2019-10-26T21:26:54Z
dc.date.available2019-10-26T21:26:54Z
dc.date.issued2015
dc.departmentEge Üniversitesien_US
dc.description.abstractWe present the Kepler photometric light-variation analysis of the late-type double-lined binary system V568 Lyr that is in the field of the high metallicity old open cluster NGC 6791. The radial velocity and the high-quality short-cadence light curve of the system are analysed simultaneously. The masses, radii and luminosities of the component stars are M1 = 1.0886 ± 0.0031 M?, M2 = 0.8292 ± 0.0026 M?, R1 = 1.4203 ± 0.0058 R?, R2 = 0.7997 ± 0.0015 R?, L1 = 1.85 ± 0.15 L?, L2 = 0.292 ± 0.018 L? and their separation is a = 31.060 ± 0.025 R?. The distance to NGC 6791 is determined to be 4.260 ± 0.290 kpc by analysis of this binary system. We fit the components of this well-detached binary system with evolution models made with the Cambridge STARS and EV(TWIN) codes to test low-mass binary star evolution. We find a good fit with a metallicity of Z = 0.04 and an age of 7.704 Gyr. The standard tidal dissipation, included in EV(TWIN) is insufficient to arrive at the observed circular orbit unless it formed rather circular to begin with. © 2015 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society.en_US
dc.identifier.doi10.1093/mnras/stv1773
dc.identifier.endpage2942en_US
dc.identifier.issn0035-8711
dc.identifier.issn0035-8711en_US
dc.identifier.issue3en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage2937en_US
dc.identifier.urihttps://doi.org/10.1093/mnras/stv1773
dc.identifier.urihttps://hdl.handle.net/11454/17379
dc.identifier.volume453en_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherOxford University Pressen_US
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectBinaries: closeen_US
dc.subjectBinaries: eclipsingen_US
dc.subjectOpen clusters and associations: individual: NGC 6791en_US
dc.subjectStars: fundamental parametersen_US
dc.subjectStars: individual: V568 Lyren_US
dc.subjectStars: low-massen_US
dc.titleA turn-offdetached binary star V568 Lyr in the Kepler field of the oldest open cluster (NGC 6791) in the Galaxyen_US
dc.typeArticleen_US

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