Absolute parameters of the southern detached eclipsing binary DG Mic

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dc.authorid0000-0002-3125-9010
dc.contributor.authorSurgit, Derya
dc.contributor.authorKuz, Mucahit
dc.contributor.authorBakis, Volkan
dc.contributor.authorEngelbrecht, Chris
dc.contributor.authorMarang, Fred
dc.date.accessioned2026-02-03T12:02:40Z
dc.date.available2026-02-03T12:02:40Z
dc.date.issued2026
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractAs part of an ongoing programme of observing detached eclipsing binary stars in the southern sky, we present the first analysis of spectroscopic observations of the Algol-type binary system DG Mic. A spectroscopic analysis of mid-resolution spectra allowed us to constrain the effective temperature of the primary component and to test the consistency of the system parameters with its spectral energy distribution (SED). Combined solutions of mid-resolution spectra and TESS, ASAS and WASP light curves imply a system of two almost identical components (q = 0.99) in circular orbits. Our final model shows that the system is a detached binary star. The masses and radii of the primary and secondary components of DG Mic were derived to be 1.65(+/- 0.12) M ae, 1.64(+/- 0.18) M ae and 1.63(+/- 0.10) R ae, 1.91(+/- 0.13) R ae, respectively. According to Geneva evolution models, both components of the system are main-sequence stars and their age is approximately 713 Myr.
dc.description.sponsorshipScientific Research Projects Directorate of Canakkale Onsekiz Mart University, Turkey [FYL-2020-3328]
dc.description.sponsorshipSouth African National Research Foundation
dc.description.sponsorshipUniversity of Johannesburg, South Africa
dc.description.sponsorshipWe would like to thank an anonymous referee for his/her helpful and critical suggestions greatly improving the overall level of the manuscript. This research was supported by the Scientific Research Projects Directorate of Canakkale Onsekiz Mart University, Turkey under the Grant No: FYL-2020-3328. This study was part of the Muecahit Kuz Master's thesis. CAE thanks the South African National Research Foundation and the University of Johannesburg, South Africa for financial support. All the authors thank the SAAO for observing time. The authors thank the ASAS, SWASP and TESS teams for making all of the observations readily accessible on public platforms.
dc.identifier.doi10.1016/j.newast.2025.102496
dc.identifier.issn1384-1076
dc.identifier.issn1384-1092
dc.identifier.scopus2-s2.0-105021248821
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://doi.org/10.1016/j.newast.2025.102496
dc.identifier.urihttps://hdl.handle.net/20.500.12428/34808
dc.identifier.volume123
dc.identifier.wosWOS:001618283600001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofNew Astronomy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20260130
dc.subjectStars
dc.subjectBinaries
dc.subjectEclipsing - stars
dc.subjectFundamental parameters - stars
dc.subjectIndividual (DG mic)
dc.titleAbsolute parameters of the southern detached eclipsing binary DG Mic
dc.typeArticle

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