Analysis of seven low-mass eclipsing binaries discovered by the Kepler mission

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dc.authoridTutar Özdarcan, Demet/0009-0002-0459-4937
dc.authoridOzdarcan, Orkun/0000-0003-4820-3950
dc.authoridYoldas, Ezgi/0000-0003-2017-3796
dc.contributor.authorOzdarcan, Orkun
dc.contributor.authorDal, Hasan Ali
dc.contributor.authorKilic, Esin Sipahi
dc.contributor.authorTutar Ozdarcan, Demet
dc.contributor.authorYoldas, Ezgi
dc.date.accessioned2024-08-31T07:50:28Z
dc.date.available2024-08-31T07:50:28Z
dc.date.issued2024
dc.departmentEge Üniversitesien_US
dc.description.abstractThe discrepancy between the observed and the predicted radii in low-mass stars is a well-known and yet to be resolved problem. Although various theoretical approaches have been developed since the first appearance of the problem, there is still no satisfactory mechanism or model which could successfully reproduce observed radii. The stellar magnetic field is among proposed resolutions but has not been investigated comprehensively for detached eclipsing binary stars. In this study, we present analysis of seven low-mass Kepler eclipsing binaries, KIC 4484356, KIC 4678171, KIC 5300878, KIC 6147573, KIC 8543278, KIC 9762519, and KIC 9821078. We investigate the average amplitude of the rotational modulation signal observed at out-of-eclipse phases, which could be used as the proxy for the strength of the stellar magnetic field, and possible discrepancies between observed and theoretically calculated radii of the components of the target systems. Our findings indicate radius discrepancy for both components of KIC 4678171 and KIC 9821078. Moreover, secondary components of KIC 9762519 and KIC 8543278 appear to have quite inflated radii. However, results from this limited sample do not indicate any correlation between average amplitude of the rotation modulation signal and observed radius discrepancies.en_US
dc.description.sponsorshipTurkish Scientific and Technical Research Council (TUBITAK) [122F322]; NASA Science Mission Directorateen_US
dc.description.sponsorshipWe wish to thank the Turkish Scientific and Technical Research Council (TUBITAK) for supporting this work through grant no. 122F322. We would like to thank the anonymous referee for helpful comments and valuable suggestions that have significantly contributed to improve the paper. This research made use of lightkurve, a python package for Kepler and TESS data analysis (Lightkurve Collaboration 2018). This paper includes data collected by the Kepler mission. Funding for the Kepler mission is provided by the NASA Science Mission Directorate.en_US
dc.identifier.doi10.1093/mnras/stae1459
dc.identifier.endpage4724en_US
dc.identifier.issn0035-8711
dc.identifier.issn1365-2966
dc.identifier.issue4en_US
dc.identifier.startpage4714en_US
dc.identifier.urihttps://doi.org/10.1093/mnras/stae1459
dc.identifier.urihttps://hdl.handle.net/11454/105236
dc.identifier.volume531en_US
dc.identifier.wosWOS:001253786600009en_US
dc.identifier.wosqualityN/Aen_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.language.isoenen_US
dc.publisherOxford Univ Pressen_US
dc.relation.ispartofMonthly Notices of The Royal Astronomical Societyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.snmz20240831_Uen_US
dc.subjectStars: Activityen_US
dc.subjectStars: Atmospheresen_US
dc.subjectStars: Late-Typeen_US
dc.titleAnalysis of seven low-mass eclipsing binaries discovered by the Kepler missionen_US
dc.typeArticleen_US

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