Apsidal motion in eccentric eclipsing binaries: CW Cephei, V478 Cygni, AG Persei, and IQ Persei

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dc.contributor.authorWolf, M.
dc.contributor.authorKucakova, H.
dc.contributor.authorKolasa, M.
dc.contributor.authorStastny, P.
dc.contributor.authorBozkurt, Z.
dc.contributor.authorHarmanec, P.
dc.contributor.authorZejda, M.
dc.contributor.authorBrat, L.
dc.contributor.authorHornoch, K.
dc.date.accessioned2019-10-27T19:17:22Z
dc.date.available2019-10-27T19:17:22Z
dc.date.issued2006
dc.departmentEge Üniversitesien_US
dc.description.abstractAims. About thirty new times of minimum light recorded with photoelectric or CCD photometers were obtained for four early-type eccentric-orbit eclipsing binaries CW Cep ( P = 2.(d)73, e = 0.029), V478 Cyg (2.(d)88, 0.016), AG Per (2.(d)03, 0.071), and IQ Per (1.(d)74, 0.076). Methods. Their O-C diagrams were analysed using all reliable timings found in the literature, and elements of apsidal motion were improved. Results. We confirm relatively short periods of apsidal motion of about 46, 27, 76, and 124 years for CW Cep, V478 Cyg, AG Per, and IQ Per, respectively. The corresponding internal structure constants, log k(2), are then found to be -2.12, -2.25, -2.15, and -2.36, under the assumption that the component stars rotate pseudosynchronously. The relativistic effects are negligible, being up to 8% of the total apsidal motion rate in all systems. Using the light-time effect solution, we have predicted a faint third component orbiting with a period of about 39 years for CW Cep.en_US
dc.identifier.doi10.1051/0004-6361:20065327
dc.identifier.endpage1083en_US
dc.identifier.issn0004-6361
dc.identifier.issn0004-6361en_US
dc.identifier.issue3en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1077en_US
dc.identifier.urihttps://doi.org/10.1051/0004-6361:20065327
dc.identifier.urihttps://hdl.handle.net/11454/38363
dc.identifier.volume456en_US
dc.identifier.wosWOS:000240370100025en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherEdp Sciences S Aen_US
dc.relation.ispartofAstronomy & Astrophysicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectstars : binaries : eclipsingen_US
dc.subjectstars : individual : CW Cepen_US
dc.subjectstars : individual : V478 Cygen_US
dc.subjectstars : individual : AG Peren_US
dc.subjectstars : individual : IQ Peren_US
dc.subjectstars : fundamental parametersen_US
dc.titleApsidal motion in eccentric eclipsing binaries: CW Cephei, V478 Cygni, AG Persei, and IQ Perseien_US
dc.typeArticleen_US

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