Refinement of third body parameters and new photometric results for the early-type multiple system IU Aurigae

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dc.contributor.authorÖzdemir, S
dc.contributor.authorMayer, P
dc.contributor.authorDrechsel, H
dc.contributor.authorDemircan, O
dc.contributor.authorAk, H
dc.date.accessioned2025-01-27T20:27:03Z
dc.date.available2025-01-27T20:27:03Z
dc.date.issued2003
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe massive eclipsing binary system IU Aurigae is re-analyzed in the context of new photometric observations and an improved treatment of its long-term period changes (O-C diagram) derived from new times of minima. The best-fit of the O-C curve reveals that the third component is orbiting around the system with a period of 293.3 days in a highly eccentric orbit (e = 0.62). A solution of the most recent UBV light curves obtained during 1997/1998 showed a third light contribution of approximate to23% and continuation of the orbital plane precession of IU Aurigae. Since the revised mass of the third component deduced from the analysis of the O-C curve of m(3) = 14.2 M-. would imply a larger fraction of third light than suggested by the value of 23% derived from the light curve analysis, the third body is possibly composed of two components. A q-search test applied to the UBV light curves yields a minimum chi(2) value at q = 0.67 +/- 0.02, which confirms previous photometric and spectroscopic solutions.
dc.identifier.doi10.1051/0004-6361:20030392
dc.identifier.endpage681
dc.identifier.issn0004-6361
dc.identifier.issue2
dc.identifier.scopus2-s2.0-0037986779
dc.identifier.scopusqualityQ1
dc.identifier.startpage675
dc.identifier.urihttps://doi.org/10.1051/0004-6361:20030392
dc.identifier.urihttps://hdl.handle.net/20.500.12428/22563
dc.identifier.volume403
dc.identifier.wosWOS:000182678800034
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherE D P Sciences
dc.relation.ispartofAstronomy & Astrophysics
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectbinaries : eclipsing
dc.subjectstars : early-type
dc.subjectstars : individual : IU Aurigae
dc.titleRefinement of third body parameters and new photometric results for the early-type multiple system IU Aurigae
dc.typeArticle

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