First photometric study of W UMa-type binary systems: BK Vul and V699 Cep

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dc.authoridAdalali, Simge/0000-0002-4676-671X
dc.contributor.authorAdalali, S.
dc.contributor.authorSoydugan, Esin
dc.date.accessioned2025-01-27T20:49:31Z
dc.date.available2025-01-27T20:49:31Z
dc.date.issued2024
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this study, new CCD photometric observations and photometric analysis of BK Vul and V699 Cep systems, which are classified as contact binaries in the literature, are presented. For the V699 Cep, the TESS light curve was also used in the photometric analysis. We determined the basic astrophysical parameters of the BK Vul and V699 Cep systems from photometric analysis using the Wilson-Devinney method. Due to the lack of spectroscopic data for both systems in the literature, these absolute parameters were approximately calculated as to be M 2 = 0.73 M ae , R 1 = 1.39 R ae and R 2 = 1.09 R ae for BK Vul, and M 2 = 0.36 M ae , R 1 = 2.40 R ae and R 2 = 1.33 R ae for V699 Cep after estimating the mass of the primary component. The period decrease rate ( dP/dt ) and cyclic variation period of BK Vul were determined from the O - C analysis as-3.86 x10 -7 day yr -1 and 27 yrs., respectively. The evolutionary status of components of both systems were discussed.
dc.description.sponsorshipGaiaMultilateral Agreement
dc.description.sponsorshipThis study includes a part of the PhD thesis of S.A. We would liketo thank the Astrophysics Research Center and Ulup & imath;nar Observatoryteam at Canakkale Onsekiz Mart University for our observations. Asmentioned in the Gaiaweb page ''This work has made use of data from the European Space Agency (ESA) mission Gaia(https://www.cosmos.esa.int/gaia), processed by theGaiaData Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium). Funding for the DPAC has been provided by national institutions, in particular the institutions participating in the GaiaMultilateral Agreement''. We would also like to thank the SIMBAD, the TESS, the MAST missions, the Atlas ofyy-yyDiagrams of EclipsingBinary Stars, and the yy-yygatewayorganizations for using their databases.
dc.identifier.doi10.1016/j.newast.2024.102270
dc.identifier.issn1384-1076
dc.identifier.issn1384-1092
dc.identifier.scopus2-s2.0-85197414233
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.newast.2024.102270
dc.identifier.urihttps://hdl.handle.net/20.500.12428/25197
dc.identifier.volume112
dc.identifier.wosWOS:001267695600001
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofNew Astronomy
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectStars
dc.subjectBinaries
dc.subjectEclipsing Stars
dc.subjectOrbital period change Stars
dc.subjectFundamental parameter Stars
dc.subjectIndividual
dc.subjectBK Vul and V699 Cep
dc.titleFirst photometric study of W UMa-type binary systems: BK Vul and V699 Cep
dc.typeArticle

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