Candidate Eclipsing Binary Systems with a ? Scuti Star in Northern TESS Field

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dc.contributor.authorAlicavus, F. Kahraman
dc.contributor.authorGumus, D.
dc.contributor.authorKirmizitas, O.
dc.contributor.authorEkinci, O.
dc.contributor.authorCavus, S.
dc.contributor.authorKaya, Y. T.
dc.contributor.authorAlicavus, F.
dc.date.accessioned2025-01-27T20:12:10Z
dc.date.available2025-01-27T20:12:10Z
dc.date.issued2022
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe existence of pulsating stars in eclipsing binaries has been known for decades. These types of objects are extremely valuable systems for astronomical studies as they exhibit both eclipse and pulsation variations. The eclipsing binaries are the only way to directly measure the mass and radius of stars with a good accuracy (<= 1%), while the pulsations are a unique way to probe the stellar interior via oscillation frequencies. There are different types of pulsating stars existing in eclipsing binaries. One of them is the delta Scuti variables. Currently, the known number of delta Scuti stars in eclipsing binaries is around 90 according to the latest catalog of these variables. An increasing number of these kinds of variables is important to understand the stellar structure, evolution and the effect of binarity on the pulsations. Therefore, in this study, we focus on discovering new eclipsing binaries with delta Scuti component(s). We searched within the northern Transiting Exoplanet Survey Satellite (TESS) field with a visual inspection by following some criteria such as light curve shape, the existence of pulsation like variations in the out-of-eclipse light curve and the T (eff) values of the targets. As a result of these criteria, we discovered some targets. The orbital variations were first removed from the TESS light curves and frequency analysis was performed on the residuals. The luminosity, and absolute and bolometric magnitudes of the targets were calculated as well. To find how much of these parameters represent the primary (more luminous) binary component, we also computed the flux density ratio of the systems by utilizing the area of the eclipses. In addition, the positions of the systems in the H-R diagram were examined considering the flux density ratios. As a consequence of the investigation, we defined 38 candidate delta Scuti stars and also one Maia variable in eclipsing binary systems.
dc.description.sponsorshipScientific and Technological Research Council (TUBITAK) [120F330]; NASA Explorer Program
dc.description.sponsorshipThis work has been supported in part by the Scientific and Technological Research Council (TUBITAK) under Grant No. 120F330. The TESS data presented in this paper were obtained from the Mikulski Archive for Space Telescopes (MAST). F.K.A. thanks Prof. Gerald Handler for showing how to clean binarity with a phenomenological fit. 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, Strasbourq, France.
dc.identifier.doi10.1088/1674-4527/ac71a4
dc.identifier.issn1674-4527
dc.identifier.issn2397-6209
dc.identifier.issue8
dc.identifier.scopus2-s2.0-85135084498
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1088/1674-4527/ac71a4
dc.identifier.urihttps://hdl.handle.net/20.500.12428/20867
dc.identifier.volume22
dc.identifier.wosWOS:000825856800001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherNatl Astronomical Observatories, Chin Acad Sciences
dc.relation.ispartofResearch in Astronomy and Astrophysics
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subject(stars:) binaries: eclipsing
dc.subjectstars: variables: delta Scuti
dc.subjecttechniques: photometric
dc.titleCandidate Eclipsing Binary Systems with a ? Scuti Star in Northern TESS Field
dc.typeArticle

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