Pulsating and Nonpulsating Components of Detached Eclipsing Binaries in the δ Scuti Instability Strip

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dc.authoridAliçavuş, Fahri / 0000-0002-1972-8400
dc.authoridKahraman Aliçavuş, Filiz / 0000-0002-9036-7476
dc.contributor.authorKahraman Aliçavuç, Filiz
dc.contributor.authorAliçavuş, Fahri
dc.contributor.authorÇelik Orhan, Zeynep
dc.contributor.authorÇelik, Eda
dc.contributor.authorCatanzaro, Giovanni
dc.contributor.authorGiarrusso, Marina
dc.date.accessioned2026-02-03T11:59:47Z
dc.date.available2026-02-03T11:59:47Z
dc.date.issued2025
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractPulsating detached eclipsing binary systems are crucial for studying the internal structure of oscillating stars. These systems are advantageous because binary effects on pulsations are minimal, allowing for more accurate determinations of fundamental stellar parameters such as mass and radius. They serve as unique laboratories for detailed investigations of pulsating stars. In this study, we focused on four detached eclipsing binaries exhibiting δ Scuti−type oscillations: HD 117476, 205 Dra, HY Vir, and V1031 Ori. Our preliminary investigation showed that all binary components of these targets lie within the δ Scuti instability strip. Therefore, we aimed to determine which components are pulsating and which are not and to explore the differences between them. To achieve this, we analyzed TESS photometric data and high-resolution spectra of the targets. Radial velocity (RV) variations were measured, and atmospheric parameters for each component were derived using spectral disentangling or synthetic composite spectra. We also modeled the binary light and RV curves to determine the fundamental physical parameters of the components. Furthermore, we examined pulsation properties using three different approaches to identify the pulsating components. The evolutionary status of the targets was also assessed. Our analysis revealed that, in each system, only one component exhibits δ Scuti−type pulsations, while the others are nonpulsating. Interestingly, we found that the key difference between pulsating and nonpulsating components within the same binary is metallicity: the metal-rich components were found to be nonpulsators, supporting theoretical studies on the effect of metallicity on δ Scuti−type pulsations.
dc.description.sponsorshipThe scientific and technological research council of Turkiye [120F330, 214]
dc.description.sponsorshipScientific and Technological Research Council (TUBITAK)
dc.description.sponsorshipNASA Explorer Program
dc.description.sponsorshipWe thank the referee for the constructive comments and helpful suggestions that improved the paper. This study has been supported by the Scientific and Technological Research Council (TUBITAK) project through 120F330. The calculations have been carried out at the Wroc & lstrok;aw Centre for Networking and Supercomputing (http://www.wcss.pl), grant No. 214. Based on data obtained from the ESO Science Archive Facility. The TESS data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). Funding for the TESS mission is provided by the NASA Explorer Program. This work has made use of data from the European Space Agency (ESA) mission Gaia (http://www.cosmos.esa.int/gaia), processed by the Gaia Data Processing and Analysis Consortium (DPAC, http://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 Gaia Multilateral Agreement. This research has made use of the SIMBAD database, operated at CDS, Strasbourg, France.
dc.identifier.doi10.3847/1538-3881/adfc65
dc.identifier.issn0004-6256
dc.identifier.issn1538-3881
dc.identifier.issue4
dc.identifier.scopus2-s2.0-105017096229
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.3847/1538-3881/adfc65
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34417
dc.identifier.volume170
dc.identifier.wosWOS:001577907100001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherIop Publishing Ltd
dc.relation.ispartofAstronomical Journal
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260130
dc.subjectChemical-Composition
dc.subjectA-Type
dc.subjectAbsolute Dimensions
dc.subjectPhysical Parameters
dc.subjectAbundance Analysis
dc.subjectTess Photometry
dc.subjectLight Curves
dc.subjectStars
dc.subjectSystems
dc.subjectModules
dc.titlePulsating and Nonpulsating Components of Detached Eclipsing Binaries in the δ Scuti Instability Strip
dc.typeArticle

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