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dc.contributor.authorDemircan, O.
dc.contributor.authorBilir, S.
dc.contributor.authorKaratas, Y.
dc.contributor.authorEker, Z.
dc.date.accessioned2021-03-04T12:06:43Z
dc.date.available2021-03-04T12:06:43Z
dc.identifier.citationEker Z., Demircan O., Bilir S., Karatas Y., "Evidences on secular dynamical evolution of detached active binary orbits and contact binary formation", Workshop on Solar and Stellar Physics through Eclipses, Antalya, Türkiye, 27 - 29 Mart 2006, cilt.370, ss.151-153
dc.identifier.othervv_1032021
dc.identifier.otherav_75b8935d-18b3-4af0-aae1-cafd05140b30
dc.identifier.urihttp://hdl.handle.net/20.500.12627/80849
dc.description.abstractEvidence of secular dynamical evolution for detached active binary orbits are presented. First order decreasing rates of orbital angular momentum (OAM), systemic mass (M = M-1 + M-2) and orbital period of detached active binaries have been determined a J/J = 3.48 x 10(-10)yr(-1),M/M = 1.30 x 10(10)yr(-1) and P/P 3.96 x 10(-10)yr(-1) from the kinematical ages of 62 field detached systems. The ratio of d log J/ d log M = 2.68 implies that either there are mechanisms which amplify AM loss delta = 2.68 times with respect to isotropic AM loss of hypothetical isotropic winds or there exist external causes contributing AM loss in order to produce this mean rate of decrease for orbital periods. Various decreasing rates of OAM (d log J /dt) and systemic mass (d log M /dt) determine various speeds of dynamical evolutions towards a contact configuration. According to average dynamical evolution with delta = 2.68, the fraction of 10, 22 and 39 per cent of current detached sample is expected to be contact system within 2, 4 and 6 Gyr respectively.
dc.language.isoeng
dc.subjectTemel Bilimler
dc.subjectFizik
dc.subjectAstronomi ve Astrofizik
dc.subjectTemel Bilimler (SCI)
dc.subjectUzay bilimi
dc.subjectASTRONOMİ VE ASTROFİZİK
dc.titleEvidences on secular dynamical evolution of detached active binary orbits and contact binary formation
dc.typeBildiri
dc.contributor.departmentÇanakkale Onsekiz Mart Üniversitesi , ,
dc.identifier.volume370
dc.contributor.firstauthorID133342


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