A List of 49 New Stellar Twins from the Kepler Catalog of Eclipsing Binary Stars

Abstract

49 new eclipsing twin binary candidates are identified and analyzed based on Kepler eclipsing binary light curves. Their colours and spectral types are calculated according to our classification. A comparison of the spectral type distribution of eclipsing twin binary systems showed that F-type twins dominate among others, which agrees well with recent studies. The distance of eclipsing twin binaries from the galactic plane shows that F and G-type twins can be seen at any distance from the galactic plane and most of the known eclipsing binary twins are located within 200 pc of the galactic plane, which could be interpreted as these systems are members of thin disk population. As a case study, a twin binary system selected from our updated list of twins, V396~Gem, has been analyzed with spectroscopic and Kepler data. As a result, we have derived the physical parameters of the components of V396~Gem as $M_{1,2}(M_{\odot })=1.814\pm 0.114$, $1.797\pm 0.114$; $R_{1,2}(R_{\odot })=2.655\pm 0.078$, $2.659\pm 0.090$; $T_{{\mathrm{eff}}_{1,2}}(K)=7000\pm 100$, $6978\pm 100$; $[M/H]=0.11\pm 0.03$. We have calculated the evolutionary status of the components by using MESA. Accurately derived physical parameters of the components of V396~Gem have allowed us to determine the age of the system as 1.168$\pm$0.149 Byrs.

9 pages, 10 figures

References in corpus (12)

• Modules for Experiments in Stellar Astrophysics (MESA)
• Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation
• The K2 Mission: Characterization and Early results
• An Analysis of the Shapes of Interstellar Extinction Curves. VII. Milky Way Spectrophotometric Optical-through-Ultraviolet Extinction and Its R-Dependence
• Artificial Intelligence Approach to the Determination of Physical Properties of Eclipsing Binaries. I. The EBAI Project
• Empirical Bolometric Correction Coefficients for Nearby Main-Sequence Stars in Gaia Era
• Twins Among the Low Mass Spectroscopic Binaries
• HIDES spectroscopy of bright detached eclipsing binaries from the $Kepler$ field - III. Spectral analysis, updated parameters, and new systems
• Radial Velocities of 41 Kepler Eclipsing Binaries
• The Kepler Eclipsing Binary V2281 Cygni with Twin Stars
• ASAS Census of Twins
• Two twin binaries with nearly identical components: KIC 4826439 and KIC 6045264

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