Discovery of delta Scuti variables in eclipsing binary systems II. Southern TESS field search

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dc.authoridCoban, Gani Caglar/0000-0003-0185-190X
dc.authoridCELIK, Eda/0000-0003-3278-5140
dc.authoridKahraman Alicavus, Filiz/0000-0002-9036-7476
dc.contributor.authorAlicavus, F. Kahraman
dc.contributor.authorCoban, C. G.
dc.contributor.authorCelik, E.
dc.contributor.authorDogan, D. S.
dc.contributor.authorEkinci, O.
dc.contributor.authorAlicavus, F.
dc.date.accessioned2025-01-27T20:44:18Z
dc.date.available2025-01-27T20:44:18Z
dc.date.issued2023
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe presence of pulsating stars in eclipsing binary systems (EBs) makes these objects significant since they allow us to investigate the stellar interior structure and evolution. Different types of pulsating stars could be found in EBs, such as & delta; Scuti variables. & delta; Scuti stars in EBs have been known for decades, and the increasing number of such systems is important for understanding pulsational structure. Hence, in this study, research was carried out on the southern TESS field to discover new & delta; Scuti stars in EBs. We produced an algorithm to search for detached and semidetached EBs considering three steps: the orbital period (P-orb)'s harmonics in the Fourier spectrum, skewness of the light curves, and classification of upsilon program. If two of these steps classify a system as an EB, the algorithm also identifies it as an EB. The TESS pixel files of targets were also analysed to see whether the fluxes were contaminated by other systems. No contamination was found. We researched the existence of pulsation through EBs with a visual inspection. To confirm & delta; Scuti-type oscillations, the binary variation was removed from the light curve, and residuals were analysed. Consequently, we identified 42 & delta; Scuti candidates in EBs. The P-orb, L, and M-V of systems were calculated. Their positions on the H-R diagram and the known orbital-pulsation period relationship were analysed. We also examined our targets to see if any of them showed frequency modulation with the orbital period and discovered one candidate of tidally tilted pulsators.
dc.description.sponsorshipScientific and Technological Research Council (TUBITAK) project [120F330]
dc.description.sponsorshipWe thank Dr. Southworth for his helpful comments that have improved the manuscript. The authors thank Mr. A. R. Awan for his contribution to the paper. This study has been supported by the Scientific and Technological Research Council (TUBITAK) project 120F330. The TESS data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). The NASA Explorer Program provides funding for the TESS mission. This research made use of Lightkurve, a python package for Kepler and TESS data analysis (Lightkurve Collaboration 2018). 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 data base, operated at CDS, Strasbourg, France.
dc.identifier.doi10.1093/mnras/stad1898
dc.identifier.endpage630
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.issue1
dc.identifier.scopus2-s2.0-85166058353
dc.identifier.scopusqualityQ1
dc.identifier.startpage619
dc.identifier.urihttps://doi.org/10.1093/mnras/stad1898
dc.identifier.urihttps://hdl.handle.net/20.500.12428/24534
dc.identifier.volume524
dc.identifier.wosWOS:001025477900002
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherOxford Univ Press
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.subjectstars: binaries: eclipsing
dc.subjectstars: oscillations
dc.subjectstars: variables: delta Scuti
dc.titleDiscovery of delta Scuti variables in eclipsing binary systems II. Southern TESS field search
dc.typeArticle

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