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Dryomova, G. N.; Свечников, М. А.

doi:10.1023/a:1021678415947

Cited by 6 publications

(5 citation statements)

References 16 publications

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“…In Dryomova and Svechnikov (2003) we showed that isochrones method inputs comparatively little intrinsic error in age calculation in the contrast to observation uncertainties (D ξ 2 < D ξ 1 ). Analyzing error origins in interpolation method we sorted out them as follow:…”

Section: Age-gap Between the Componentsmentioning

confidence: 86%

“…The task of the definition of ages for the binaries from the catalogue by Svechnikov and Perevozkina (1999) was resolved early using model evolutionary stellar tracks by Maeder and Meynet (1988). Obtained results may be found in Dryomova and Svechnikov (2003) with detailed description of the isochrone method adjusted to arbitrary evolutionary models. New models by Claret (2004) use modified initial physics concerning opacities, overshooting parameter, the nuclear network, mass loss rates and initial mass range of the models.…”

Section: Age-gap Between the Componentsmentioning

confidence: 99%

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Tidal torque constants as a critical test for an evolution of close eclipsing binaries

Dryomova¹,

Свечников²

2011

Astrophys Space Sci

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Individual tidal torque λ 2 , E 2 and apsidal-motion k 2 constants were calculated for 112 close eclipsing binaries (CEBs) with Detached components belonging to the Main Sequence (DMS-type) from the catalogue by Svechnikov and Perevozkina (Catalogue of orbital elements, masses and luminosities of variable stars of DMS-type and some results of its statistical treatment, Ural State University Press, Yekaterinburg, pp. 1-5, 1999) and for 95 detached binaries taken from the catalogue by Torres et al. (Astron. Astrophys. Rev. 18:67, 2010) on the base of theoretical evolutionary stellar models including tidal torque constants by Claret (Astron. Astrophys. 424:919 , 2004). A method of the inversion of model track grid into isochrones was formulated as a complex interpolation procedure for DMS-binaries data. Sets of isochrones were computed in k 2 -M, k 2 -R, λ 2 -M, λ 2 -R, E 2 -M, and E 2 -R planes. Calculated tidal torque constants allow to test stellar structure theory by comparing observed and estimated values of apsidal motion period and analyzing the correlation between timescales of synchronization, circularization, magnetic braking, as well as nuclear burning of DMS-components.

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Section: Age-gap Between the Componentsmentioning

confidence: 86%

Section: Age-gap Between the Componentsmentioning

confidence: 99%

Tidal torque constants as a critical test for an evolution of close eclipsing binaries

Dryomova¹,

Свечников²

2011

Astrophys Space Sci

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“…The isochrone method is also based on the theoretical stellar evolution models by Maeder & Meynet (1988), taking an overshooting into account along with mass loss of components and developed for Population I stars with (X, Y, Z) = 0.70, 0.28, 0.02. This method was expounded in Dryomova & Svechnikov (2003). The choice of these models with given abundances is explained by the fact that all eclipsing binaries considered here are located in Sun neighbourhood and therefore should have similar chemical composition.…”

Section: Description Of the Cataloguementioning

confidence: 99%

Catalogue of the orbital elements, masses, and luminosities for short-periodicRS CVn-type eclipsing systems

Dryomova¹,

Perevozkina²,

Свечников³

2005

A&A

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Abstract. New data on the orbital elements, masses, and luminosities were collected for 31 pre-contact binary systems of shortperiodic RS CVn-type. We treat the catalogued data statistically in order to accurately define the properties and evolutionary status of each class system. The ages of pre-contact systems were estimated by the isochrone method. Numerous comments and bibliographic references to the catalogue are also included.

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“…The study and analysis of stellar binary systems is an extremely sensational and productive topic, especially for the estimation of stellar masses and distances which is usually derived in a considerable way from accurate analysis of synthetic spectra, keplerian motions, radial velocity curves and theoretical evolutionary tracks (Dryomova & Svechnikov 2003;Malkov et al 2010).…”

Section: Introductionmentioning

confidence: 99%

“…The study and analysis of stellar binary systems are an extremely popular topic that has yielded many results, especially related to the estimations of stellar masses and distances, which are usually derived in a reasonable way from accurate analysis of synthetic spectra, Keplerian motions, radial velocity curves and theoretical evolutionary tracks (Dryomova & Svechnikov 2003;Malkov et al 2010). Some of the physical and geometrical parameters can be estimated directly in the cases of eclipsing and spectroscopic binaries, but there is no direct way to estimate the parameters of CVBSs (Al-Wardat et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Physical and geometrical parameters of VCBS XIII: HIP 105947

Masda

Al-Wardat

Pathan

2018

Res. Astron. Astrophys.

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The perfect physical and geometrical parameters of the main-sequence close visual binary system (CVBS); HIP 105947, are explicitly presented. These parameters have been constructed conclusively using Al-Wardat's complex method for analysing CVBSs, which is a method for constructing a synthetic spectral energy distribution (SED) for the entire binary system using individual SED for each component star. Which in its turn built using Kurucz (ATLAS9) line-blanketed plane-parallel models. At the same time, the orbital parameters for the system are calculated using Tokovinin's dynamical method for constructing the best orbits of interferometric binary system. Henceforth, the mass-sum of the components, the △θ and △ρ residuals for the system are introduced. The combination of Al-Wardat's and Tokovinin's methods yields the estimation of the physical and geometrical parameters to their best values. The positions of the components of the system on the evolutionary tracks and isochrones are plotted and their formation and evolution are discussed.

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Cited by 6 publications

References 16 publications

Tidal torque constants as a critical test for an evolution of close eclipsing binaries

Tidal torque constants as a critical test for an evolution of close eclipsing binaries

Catalogue of the orbital elements, masses, and luminosities for short-periodicRS CVn-type eclipsing systems

Physical and geometrical parameters of VCBS XIII: HIP 105947

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