Long-term orbital period behaviors of the neglected Algol type binaries: CC Herculis and XZ Aquilae

dc.contributor.authorSoydugan, F.
dc.contributor.authorSoydugan, E.
dc.contributor.authorIbanoglu, C.
dc.contributor.authorDemircan, O.
dc.date.accessioned2019-10-27T19:20:13Z
dc.date.available2019-10-27T19:20:13Z
dc.date.issued2006
dc.departmentEge Üniversitesien_US
dc.description.abstractOrbital period variations of two neglected Algol type binaries, CC Her and XZ Aql, are studied based on all available times of minima. In the case of CC Her, it is found that the O-C curve displays a tilted sinusoidal variation with an eccentricity of 0.54 +/- 0.03 and a period of 52.4 +/- 0.4 yr, which can be explained by the light-time effect due to the presence of an unseen component. The course of the orbital period change in XZ Aql appears less reliable but its O-C curve can be represented by a periodic variation with a period of 36.7 +/- 0.6 yr superimposed on an upward parabola. The parabolic variation indicates a secular period increase with a rate of dP/dt = 7.1 s per century. The corresponding conservative mass transfer from less massive component to the more massive one is about 3.26 x 10(-7) M-circle dot yr(-1). It is interesting to see that the O-C variation of CC Her displays no evidence (as upward parabola) on the mass transfer characteristic for Algols. The periodic change of the orbital period of XZ Aql, like CC Her, may be caused by the presence of the third-body. The lower limits of the masses of the hypothetical unseen components for CC Her and XZ Aql are found to be 2.69 M-circle dot and 0.47 M-circle dot, respectively. The third body of CC Her should be detectable not only spectroscopically but also photoelectrically, if it exists. (c) 2006 WILEY-VCH Verlag GmbH& Co. KGaA, Weinheim.en_US
dc.identifier.doi10.1002/asna.200510620
dc.identifier.endpage709en_US
dc.identifier.issn0004-6337
dc.identifier.issn1521-3994
dc.identifier.issn0004-6337en_US
dc.identifier.issn1521-3994en_US
dc.identifier.issue7en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage705en_US
dc.identifier.urihttps://doi.org/10.1002/asna.200510620
dc.identifier.urihttps://hdl.handle.net/11454/38848
dc.identifier.volume327en_US
dc.identifier.wosWOS:000239852600007en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherWiley-V C H Verlag Gmbhen_US
dc.relation.ispartofAstronomische Nachrichtenen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectstars : binaries : eclipsingen_US
dc.subjectstars : individual (CC Her, XZ Aql)en_US
dc.titleLong-term orbital period behaviors of the neglected Algol type binaries: CC Herculis and XZ Aquilaeen_US
dc.typeArticleen_US

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