Single-lined eclipsing binaries with δScuti components: GQ Dra, RR Lep, and TYC 683-640-1

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KAHRAMAN ALİÇAVUŞ F., ALİÇAVUŞ F., Çoban Ç., Handler G., De Cat P.

Monthly Notices of the Royal Astronomical Society, vol.527, no.2, pp.4076-4086, 2024 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 527 Issue: 2
  • Publication Date: 2024
  • Doi Number: 10.1093/mnras/stad3467
  • Journal Name: Monthly Notices of the Royal Astronomical Society
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Communication Abstracts, Compendex, INSPEC, Metadex, zbMATH, DIALNET, Civil Engineering Abstracts
  • Page Numbers: pp.4076-4086
  • Keywords: binaries: eclipsing, stars: atmospheres, stars: fundamental parameters, stars: variables: δScuti
  • Çanakkale Onsekiz Mart University Affiliated: Yes

Abstract

Eclipsing binaries with (a) pulsating component(s) are remarkable objects to investigate the evolution and structure of stellar systems. Detailed studies of such systems are also important to reveal their pulsation properties. The largest sample of pulsating eclipsing binaries is the one containing δScuti variables. In this study, we present a comprehensive spectroscopic and photometric study of three such systems, GQ Dra, RR Lep, and TYC 683-640-1. Their orbital parameters were derived from their large-amplitude radial velocity variations. All systems were found to be single-lined eclipsing binaries. We determined the atmospheric parameters of the primary components, which are the more luminous ones. By using the results of the spectroscopic analysis, the binarity of the systems was modelled and the fundamental stellar parameters (mass, radius) of each system were obtained. In addition, the pulsations of the systems were analysed. Both GQ Dra and RR Lep exhibit frequencies that are modulated with the orbital period. Therefore, the pulsating components of these systems are identified as candidate tidally tilted pulsators.