Early-type W UMa contact binary system: New data on V535 Ara

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dc.contributor.authorOzkardes, B.
dc.contributor.authorErdem, A.
dc.date.accessioned2025-01-27T20:41:51Z
dc.date.available2025-01-27T20:41:51Z
dc.date.issued2012
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThis paper presents the results of spectroscopic and photometric observations of the early-type W UMa system V535 Ara. New high-resolution spectra were taken at the Mt. John University Observatory in 2007. Radial velocities and spectroscopic orbital elements of the system were determined by applying KOREL spectral disentangling. The resulting orbital elements were: a(1)sini = 0.0047 +/- 0.0001 AU, a(2)sini = 0.0146 +/- 0.0001 AU, M(1)sin(3)i = 1.85 +/- 0.01 M(circle dot), and M(2)sin(3)i = 0.59 +/- 0.01 M(circle dot). The components were found to be in synchronous rotation following examination of their disentangled H gamma line profiles. Four photometric data-sets (1966 BV, 1967 BV, HIPPARCOS and ASAS) were modeled using the Wilson-Devinney method. The model describes V535 Ara as an A sub-type W UMa type eclipsing binary which has a fill out factor of 0.22 in marginal contact configuration. The simultaneous solution of light and radial velocity curves gave the following absolute parameters: M(1) = 1.94 +/- 0.04 M(circle dot), M(2) = 0.59 +/- 0.02 M(circle dot), R(1) = 2.09 +/- 0.03 R(circle dot), R(2) = 1.23 +/- 0.02R(circle dot), L(1) = 18 +/- 3 L(circle dot), and L(2) = 6 +/- 1 L(circle dot). The distance to V535 Ara was calculated as 123 20 pc using distance modulus with correction for interstellar extinction. (C) 2011 Elsevier B.V. All rights reserved.
dc.description.sponsorshipCanakkale Onsekiz Mart University Research Foundation [2007/56]
dc.description.sponsorshipThis study forms part of the Ph.D. studies of B. Ozkardes and was supported by Canakkale Onsekiz Mart University Research Foundation under Grant No. 2007/56. We thank Prof. John Hearnshaw for granting use of the facilities at Mt. John University Observatory, New Zealand.
dc.identifier.doi10.1016/j.newast.2011.07.002
dc.identifier.endpage148
dc.identifier.issn1384-1076
dc.identifier.issue2
dc.identifier.scopus2-s2.0-80052033393
dc.identifier.scopusqualityQ2
dc.identifier.startpage143
dc.identifier.urihttps://doi.org/10.1016/j.newast.2011.07.002
dc.identifier.urihttps://hdl.handle.net/20.500.12428/24252
dc.identifier.volume17
dc.identifier.wosWOS:000298129800014
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Bv
dc.relation.ispartofNew Astronomy
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectStars: binaries: eclipsing
dc.subjectStars: fundamental parameters
dc.subjectTechnique: spectroscopy
dc.subjectTechnique: photometry
dc.subjectStars: individual (V535 Ara)
dc.titleEarly-type W UMa contact binary system: New data on V535 Ara
dc.typeArticle

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