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Öğe Discovery of ? Sct components in eclipsing binary systems IQ CMa, AW men and W Vol(Oxford University Press, 2023) Ulaş, Burak; Ulusoy, CerenWe present the first evidence on the δ Sct type pulsations of the primary components of three eclipsing binaries IQ CMa, AW Men, and W Vol in the Transiting Exoplanet Survey Satellite (TESS) field. A comprehensive investigation of the binary properties is conducted. The light curves of the systems are analysed and the frequency analyses are performed to residual data. The systems are compared to the binaries of the same morphological types, and the primaries are examined in contrast to the δ Sct type pulsators. The results show that the systems are oscillating eclipsing Algol-type systems.Öğe Four New Eclipsing Binary Systems in the TESS field: CD-34 13220, HD 295082, TYC 6484-426-1 and TYC 6527-2310-1(IOP Publishing, 2021) Ulaş, BurakWe present the first evidence for the binarity of four targets in the TESS field. The temperatures are estimated by SED analysis and the orbital periods are determined. The TESS light curves of the systems are analyzed and the orbital and the absolute parameters are derived. The targets are also compared to wellstudied binary systems with the same morphological type and their evolutionary states are discussed. Our results indicate that the stars belong to the class of eclipsing detached binary systems.Öğe Six Newly Discovered Eclipsing Binary Systems in the TESS field(Institute of Physics, 2023) Ulaş, Burak; Ayan, VildanWe present the first detailed investigation of six eclipsing binary systems in the TESS field. The TESS light curves of the targets are analyzed by determining the initial effective temperatures via SED fits. The absolute parameters are derived and the systems are compared to well-known binaries of the same type. Results show that CD-58791, CD-621257 and TYC 9356-355-1 are detached binary systems. CD-54942 and UCAC4 136-007295 are contact binaries while TYC 8508-1413-1 is a semidetached system.Öğe Zonklayan bileşenli algollerde bozulmanın zonklama dönemine etkisi(Çanakkale Onsekiz Mart Üniversitesi, 2009) Ulaş, Burak; Demircan, OsmanBu çalışmada zonklayan bileşenli Algoller ve diğer çift yıldızların zonklayan bileşenlerinin temel zonklama frekanslarında dönme ve gelgit etkilerinden dolayı meydana gelebilecek etki araştırılmıştır. Matematiksel olarak frekansın ve genliğin kütle oranı, merkez uzaklığı gibi temel niceliklerle değişimi incelenmiş, artan ve azalan frekans değerleri için bu nicelikler birbirileriyle ilişkilendirilmiştir. Teorik modele kanıt aranmış ve gözlemsel veriler çözümlenerek değişik yöntemlerle bu etki kanıtlanmaya çalışılmıştır.
