Simultaneous solutions of Kepler light curves and radial velocity curves of seven heartbeat variables

Dimitrov, D.; Kjurkchieva, D.; Iliev, I. Kh.

doi:10.1093/mnras/stx745

Cited by 47 publications

(31 citation statements)

References 46 publications

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“…Some of them have been objects of follow-up spectroscopy which shows a good agreement between the spectroscopic and photometric orbital elements (Smullen & Kobulnicky 2015, Shporer et al 2016, Dimitrov et al 2017. Last years we also found 12 HB stars between several samples of eclipsing Kepler systems (Kjurkchieva & Vasileva 2015, 2016, Kjurkchieva et al 2016a.…”

Section: Introductionsupporting

confidence: 68%

“…The contributions of the different parameters on the shape, width and amplitude of the periastron feature are apparent in figs. 3-4 of Dimitrov et al (2017). It should be pointed out that both model sets (Thompson et al 2012 andDimitrov et al 2017) describe result of clean tidal distortions without contribution of reflection and other faint effects.…”

Section: Out-of-eclipse Variability Of the Targetsmentioning

confidence: 90%

“…3-4 of Dimitrov et al (2017). It should be pointed out that both model sets (Thompson et al 2012 andDimitrov et al 2017) describe result of clean tidal distortions without contribution of reflection and other faint effects. The last ones may be considerable for some cases (as KOI-54).…”

Section: Out-of-eclipse Variability Of the Targetsmentioning

confidence: 90%

“…2-3, top panels) with amplitudes of 0.0035 mag and 0.0025 mag, i.e. these targets are eclipsing heartbeat stars (EB+HB type, Dimitrov et al 2017). None of them reveals tidally-induced pulsations (Figs.…”

Section: Out-of-eclipse Variability Of the Targetsmentioning

confidence: 95%

“…That is why we estimated the parameter errors manually based on the following rule (Dimitrov et al 2017). The error of parameter b corresponded to that deviation ∆b from its final value b f for which the mean residuals of the HB features increase by 3σ (σ is the mean photometric error of the target).…”

Section: Light Curve Solutionsmentioning

confidence: 99%

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Light curve solutions of the eccentric binaries KIC 10992733, KIC 5632781, KIC 10026136 and their out-of-eclipse variability

Kjurkchieva¹,

Vasileva²

2018

New Astronomy

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We determined the orbits and stellar parameters of three eccentric eclipsing binaries by light curve solutions of their Kepler data. KIC 10992733 and KIC 5632781 undergo total eclipses while KIC 10026136 reveals partial eclipses. The components of the targets are G and K stars. KIC 10992733 exhibited variations which were attributed to variable visibility of spot(s) on asynchronously rotating component. KIC 5632781 and KIC 1002613 reveal tidally-induced features at periastron, i.e. they might be considered as eclipsing heartbeat stars. The characteristics of the periastron features (shape, width and amplitude) confirm the theoretical predictions.

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Section: Introductionsupporting

confidence: 68%

Section: Out-of-eclipse Variability Of the Targetsmentioning

confidence: 90%

Section: Out-of-eclipse Variability Of the Targetsmentioning

confidence: 90%

Section: Out-of-eclipse Variability Of the Targetsmentioning

confidence: 95%

Section: Light Curve Solutionsmentioning

confidence: 99%

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Light curve solutions of the eccentric binaries KIC 10992733, KIC 5632781, KIC 10026136 and their out-of-eclipse variability

Kjurkchieva¹,

Vasileva²

2018

New Astronomy

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Global parameters of the W UMa stars FI Lyn, UV Lyn, and NSVS 781878

et al. 2020

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Photometric and spectral observations of the W UMa binaries FI Lyn, UV Lyn, and NSVS 781878 with periods of around 9.5–10 hr were carried out in order to determine their global parameters by simultaneous light curve and radial velocity curve solutions. We found that the three targets have shallow‐contact configurations with close in mass and radius components. UV Lyn is of W‐subtype, NSVS 781878 is of A‐subtype, while FI Lyn may be considered as binary in thermal contact. Our data show evidences of photospheric activity of the targets but not of emission in the Hα line. The surface inhomogeneity of UV Lyn is stable during the last several decades. Its O–C diagram implies presence of third body with a period of 24 years. The distances of FI Lyn, UV Lyn, and NSVS 781878 calculated from the derived luminosities coincide with those obtained by GAIA astrometrically.

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Light curve solutions of the eclipsing eccentric binaries KIC 8111622, KIC 10518735, KIC 8196180 and their out-of-eclipse variability

Kjurkchieva¹,

Vasileva²

2018

Astrophys Space Sci

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We determined the orbits and stellar parameters of three eccentric eclipsing binaries by light curve solutions of their Kepler data. KIC 8111622 and KIC 10518735 undergo total eclipses while KIC 8196180 reveals partial eclipses. The target components are G and K stars, excluding the primary of KIC 8196180 which is early F star. KIC 8196180 reveals well-visible tidally-induced feature at periastron, i.e. it is an eclipsing heartbeat star. The characteristics of the observed periastron feature (shape, width and amplitude) confirm the theoretical predictions. There are additional out-of-eclipse variations of KIC 8196180 with the orbital period which may be explained by spot activity of synchronously rotating component. Besides worse visible periastron feature KIC 811162 exhibits smallamplitude light variations whose period is around 2.3 times shorter than the orbital one. These oscillations were attributed to spot(s) on asynchronously rotating component.

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Simultaneous solutions of Kepler light curves and radial velocity curves of seven heartbeat variables

Cited by 47 publications

References 46 publications

Light curve solutions of the eccentric binaries KIC 10992733, KIC 5632781, KIC 10026136 and their out-of-eclipse variability

Light curve solutions of the eccentric binaries KIC 10992733, KIC 5632781, KIC 10026136 and their out-of-eclipse variability

Global parameters of the W UMa stars FI Lyn, UV Lyn, and NSVS 781878

Light curve solutions of the eclipsing eccentric binaries KIC 8111622, KIC 10518735, KIC 8196180 and their out-of-eclipse variability

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Simultaneous solutions of Kepler light curves and radial velocity curves of seven heartbeat variables

Cited by 47 publications

References 46 publications

Light curve solutions of the eccentric binaries KIC 10992733, KIC 5632781, KIC 10026136 and their out-of-eclipse variability

Light curve solutions of the eccentric binaries KIC 10992733, KIC 5632781, KIC 10026136 and their out-of-eclipse variability

Global parameters of the W UMa stars FI Lyn, UV Lyn, and NSVS 781878

Light curve solutions of the eclipsing eccentric binaries KIC 8111622, KIC 10518735, KIC 8196180 and their out-of-eclipse variability

Contact Info

Product

Resources

About

Light curve solutions of the eccentric binaries KIC 10992733, KIC 5632781, KIC 10026136 and their out-of-eclipse variability

Light curve solutions of the eccentric binaries KIC 10992733, KIC 5632781, KIC 10026136 and their out-of-eclipse variability