Detailed Analysis of Two Eccentric Binary Stars Observed by TESS

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Aliçavuş F., Soydugan F., Kahraman F., Soydugan E.

Turkish Physical Society 36rd International Physics Congress, İstanbul, Turkey, 1 - 05 September 2020, vol.2, pp.123

  • Publication Type: Conference Paper / Summary Text
  • Volume: 2
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.123
  • Çanakkale Onsekiz Mart University Affiliated: Yes


Thanks to the increasing sensitive satellite data, there have been important developments
in the studies of binary stars. These high-quality photometric data can be combined with
spectral observations to obtain absolute parameters (such as mass, radius) of binary
components with an accuracy of less than 1%. These precisely obtained parameters allow
us to produce more accurate stellar evolution models and make observation-modelcomparisons effectively. In this study, the TESS (Transiting Exoplanet Survey Satellite)
light curves and radial velocity data of two eccentric orbit binary stars were solved
simultaneously and astrophysical parameters such as mass, radius of each component
were determined. By using these parameters as input, binary star evolution models were
produced. As a result, the age of the systems and the initial state of their evolution are
discussed. Additionally, the effects of parameters such as rotation and magnetic braking
on binary orbital evolution are discussed.