Analysis of ? Librae including Hipparcos astrometry

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dc.authoridHadrava, Petr/0000-0002-4518-3918
dc.authoridBAKIS, VOLKAN/0000-0002-3125-9010
dc.contributor.authorBakis, V.
dc.contributor.authorBudding, E.
dc.contributor.authorErdem, A.
dc.contributor.authorBakis, H.
dc.contributor.authorDemircan, O.
dc.contributor.authorHadrava, P.
dc.date.accessioned2025-01-27T20:27:03Z
dc.date.available2025-01-27T20:27:03Z
dc.date.issued2006
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractNew spectroscopy of the classical Algol system delta Lib, combined with high-quality optical and infrared photometry, provides the basis for a good understanding of the close binary system's main parameters. Detailed analysis of the photometry reveals the significant role of a third light source, pointing to the existence of a companion to the eclipsing system of mass similar to 1 M-circle dot. We review the methodology of applying high-accuracy positional information, available from the Hipparcos Intermediate Astrometric Data archive, to stars that may have such companions. Analysis of the astrometry of delta Lib also points to a third star similar to the one already identified by Worek from radial-velocity data, although with slightly revised parameters. O-C data do not contradict this, but their general precision (while confirming the close pair's Algol status) fails to allow a decision on the third orbit parameters: Worek's or revised ones. Taking the photometry, spectroscopy and astrometry together, however, the existence of a third star of comparable mass to the Sun, as a relatively close companion to the eclipsing binary (similar to 4 au), is confirmed.
dc.identifier.doi10.1111/j.1365-2966.2006.10619.x
dc.identifier.endpage1945
dc.identifier.issn0035-8711
dc.identifier.issue4
dc.identifier.scopus2-s2.0-33746858098
dc.identifier.scopusqualityQ1
dc.identifier.startpage1935
dc.identifier.urihttps://doi.org/10.1111/j.1365-2966.2006.10619.x
dc.identifier.urihttps://hdl.handle.net/20.500.12428/22562
dc.identifier.volume370
dc.identifier.wosWOS:000239517300034
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherBlackwell Publishing
dc.relation.ispartofMonthly Notices of The Royal Astronomical Society
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectbinaries : close
dc.subjectstars : individual : delta Lib
dc.titleAnalysis of ? Librae including Hipparcos astrometry
dc.typeArticle

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