Spectroscopic observations of the interacting massive binary AQ Cassiopea

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dc.contributor.authorIbanoglu, C.
dc.contributor.authorCakirli, O.
dc.contributor.authorSipahi, E.
dc.date.accessioned2019-10-27T22:07:07Z
dc.date.available2019-10-27T22:07:07Z
dc.date.issued2013
dc.departmentEge Üniversitesien_US
dc.description.abstractNew spectroscopic observations of the double-lined eclipsing binary AQCas are presented. All available spectroscopic and photometric observations have been analysed for the fundamental properties of the components. Analyses show that the system consists of a massive primary with a mass of 17.63 +/- 0.91 Me and radius of 13.48 +/- 0.64 R-circle dot and a secondary with 12.56 +/- 0.81 M-circle dot and radius of 23.55 +/- 0.73 R-circle dot, corresponding spectral types of B0.5(+/- 2) II-III + B3(+/- 1) II. The secondary star fills its corresponding Roche lobe and mass transfer to the primary star is going on. This stream considerably does affect the photometric observations both starting from the second quarter up to the first contact of primary eclipse and just at the second maximum. Thus, the light curve is distorted and tightly depended on the wavelength of the observations. The available multi passband light curves have been analysed by taking the stream effects, as either hot or cool spots, into account. The comparison of the models and observations in the log(L/L-circle dot) log - T-eff and logg - log T-eff diagrams clearly shows that the more massive star is consistent with models and is predicted to be close to the phase of hydrogen shell ignition. Average distance to the system is estimated as 4150 +/- 240 pc using the BVJHK magnitudes and V-passband extinction. (C) 2013 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipTUBITAK National Observatory (TUG)Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [11BRTT150-198]; Turkish Scientific and Technology CouncilTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) [112T263, 108T237]en_US
dc.description.sponsorshipWe thank to TUBITAK National Observatory (TUG) for a partial support in using RTT150 telescope with project number 11BRTT150-198. We also thank to the staff of the Bakirlitepe observing station for their warm hospitality. This study is supported by Turkish Scientific and Technology Council under project number 112T263 and 108T237. The following internet-based resources were used in research for this paper: the NASA Astrophysics Data System; the SIM BAD database operated at CDS, Strasbourg, France; TUBITAK ULAKBIM Sureli Yayinlar Katalogu-TURKEY; and the ar chi iv scientific paper preprint service operated by Cornell University. The authors are indebted to the anonymous referee for his/her valuable suggestions which improved the paper.en_US
dc.identifier.doi10.1016/j.newast.2013.04.003
dc.identifier.endpage73en_US
dc.identifier.issn1384-1076
dc.identifier.issn1384-1092
dc.identifier.issn1384-1076en_US
dc.identifier.issn1384-1092en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.startpage68en_US
dc.identifier.urihttps://doi.org/10.1016/j.newast.2013.04.003
dc.identifier.urihttps://hdl.handle.net/11454/48954
dc.identifier.volume25en_US
dc.identifier.wosWOS:000322805300010en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevieren_US
dc.relation.ispartofNew Astronomyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBinaries eclipsing - starsen_US
dc.subjectFundamental parameters Individual methoden_US
dc.subjectSpectroscopyen_US
dc.titleSpectroscopic observations of the interacting massive binary AQ Cassiopeaen_US
dc.typeArticleen_US

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