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We present spectroscopic and photometric analysis of the eclipsing binary KIC\,7385478. We find that the system is formed by F1V + K4III-IV components. Combining results from analysis of spectroscopic data and $Kepler$ photometry, we…

Solar and Stellar Astrophysics · Physics 2017-08-23 Orkun Özdarcan , Hasan Ali Dal

In this study, we present the results obtained from KIC 9761199's the photometrical data acquired by the Kepler Mission. The light curve of the system, the sinusoidal variation out-of-eclipses and instant-short term flare events in the…

Solar and Stellar Astrophysics · Physics 2016-11-08 Ezgi Yoldas , Hasan Ali Dal

We present the ${\it Kepler}$ photometry of KIC 6048106 exhibiting O'Connell effect and multiperiodic pulsations. Including a starspot on either of the components, light-curve synthesis indicates that this system is a semi-detached Algol…

Solar and Stellar Astrophysics · Physics 2016-12-21 Jae Woo Lee

TIC 322208686 is known to be a detached binary that exhibits two types of variability: pulsation and eclipse. We present the physical properties of the target star using the short-cadence TESS data from sectors 24, 57, and 58, and our…

Solar and Stellar Astrophysics · Physics 2025-11-25 Jae Woo Lee , Kyeongsoo Hong , Min-Ji Jeong , Jang-Ho Park , Pakakaew Rittipruk , Hye-Young Kim

We report the ${\it Kepler}$ photometry of KIC 11401845 displaying multiperiodic pulsations, superimposed on binary effects. Light-curve synthesis represents that the binary star is a short-period detached system with a very low mass ratio…

Solar and Stellar Astrophysics · Physics 2017-02-08 Jae Woo Lee , Kyeongsoo Hong , Seung-Lee Kim , Jae-Rim Koo

The short-period (P $\approx1.7$ d), Algol-type eclipsing binary KIC 7385478 consists of an F-type primary star ($M_1 \approx 1.71M_{\odot}$) and an evolved K-type secondary ($M_2 \approx 0.37M_{\odot}$) (Ozdarcan \& Ali Dal 2017). We study…

Solar and Stellar Astrophysics · Physics 2019-09-18 Zhao Guo , Gang Li

This study depends on KIC 9641031 eclipsing binary system with a chromospherically active component. There are three type variations, such as geometrical variations due to eclipses, sinusoidal variations due to the rotational modulations…

Solar and Stellar Astrophysics · Physics 2016-05-04 Ezgi Yoldaş , Hasan Ali Dal

We present comprehensive spectroscopic and photometric analysis of the detached eclipsing binary KIC 12418816, which is composed of two very similar and young main sequence stars of spectral type K0 on a circular orbit. Combining…

Solar and Stellar Astrophysics · Physics 2017-12-13 Hasan Ali Dal , Orkun Ozdarcan

We present here the results on the physical nature a RS CVn binary KIC 7885570 and its chromospheric activity based on the Kepler Mission data. Assuming the primary component temperature, 6530 K, the temperature of the secondary component…

Solar and Stellar Astrophysics · Physics 2018-02-06 M. Kunt , H. A. Dal

We present the absolute properties of the double-lined eclipsing binary KIC 6206751 exhibiting multiperiodic pulsations. The ${\it Kepler}$ light curve of this system was simultaneously solved with the radial-velocity data given by Matson…

Solar and Stellar Astrophysics · Physics 2018-08-15 Jae Woo Lee , Jang-Ho Park

In this paper we analyzed the light curve of the object KIC~3832716 observed during Kepler K1 mission. We showed that this previously known eclipsing binary is in fact quadruple system, in double eclipsing binary configuration on a long…

Solar and Stellar Astrophysics · Physics 2018-12-12 M. Fedurco , Š. Parimucha

We present the physical properties of V404 Lyr exhibiting eclipse timing variations and multiperiodic pulsations from all historical data including the Kepler observations. Detailed analyses of 2,922 minimum epochs showed that the orbital…

Solar and Stellar Astrophysics · Physics 2015-06-19 Jae Woo Lee , Seung-Lee Kim , Kyeongsoo Hong , Chung-Uk Lee , Jae-Rim Koo

Comprehensive analysis of optical spectroscopy and space photometry of the solar type eclipsing binary system KIC\,4832197 is presented. The system is composed of F7V + F9V components with masses of $M_{1}=1.16\pm0.12~M_{\odot}$,…

Solar and Stellar Astrophysics · Physics 2023-06-21 Orkun Özdarcan , Hasan Ali Dal , Ezgi Yoldaş

In this study we identify 11 Kepler systems (KIC 5255552, 5653126, 5731312, 7670617, 7821010, 8023317, 10268809, 10296163, 11519226, 11558882 and 12356914) with a "flip-flop" effect in the eclipse timing variations O-C diagrams of the…

Solar and Stellar Astrophysics · Physics 2020-09-02 A. K. Getley , B. Carter , R. King , S. O'Toole

We present the eclipsing Heartbeat Star KIC 9704906 with tidally excited oscillations (TEOs) and gamma Doradus/delta Scuti hybrid pulsations. The derived parameters show that it has an orbital period of $P$=8.7529108(1) days, a high…

Solar and Stellar Astrophysics · Physics 2024-12-10 Min-Yu Li , Sheng-Bang Qian , Li-Ying Zhu , Liang Liu , Wen-Ping Liao , Er-Gang Zhao , Xiang-Dong Shi , Fu-Xing Li , Qi-Bin Sun

We present both binarity and pulsation of KIC 6220497 from the {\it Kepler} observations. The light curve synthesis shows that the eclipsing system is a semi-detached Algol with parameters of $q$ = 0.243$\pm$0.001, $i$ = 77.3$\pm$0.3 deg,…

Solar and Stellar Astrophysics · Physics 2016-06-15 Jae Woo Lee , Kyeongsoo Hong , Seung-Lee Kim , Jae-Rim Koo

The present paper focuses on the eclipsing binary KIC 8553788 which belongs to two different types of binary systems regarding its physical properties. In particular, it is one of the 71 oscillating stars of Algol type that have been…

Solar and Stellar Astrophysics · Physics 2018-09-05 Alexios Liakos

KIC 7177553 was observed by the Kepler satellite to be an eclipsing eccentric binary star system with an 18-day orbital period. Recently, an eclipse timing study of the Kepler binaries has revealed eclipse timing variations in this object…

Solar and Stellar Astrophysics · Physics 2016-03-16 H. Lehmann , T. Borkovits , S. A. Rappaport , H. Ngo , D. Mawet , Sz. Csizmadia , E. Forgacs-Dajka

The {\it Kepler} light curve of KIC 4739791 exhibits partial eclipses, inverse O'Connell effect, and multiperiodic pulsations. Including a starspot on either of the binary components, the light-curve synthesis indicates that KIC 4739791 is…

Solar and Stellar Astrophysics · Physics 2016-01-27 Jae Woo Lee , Seung-Lee Kim , Kyeongsoo Hong , Jae-Rim Koo , Chung-Uk Lee , Jae-Hyuck Youn

We present a new asteroseismic analysis of KIC~6048106, a \textit{Kepler} Algol-type eclipsing binary star in a circularized orbit with $P_\rm{orb}$=1.559361$\pm$0.000036~d. Based on a physical model for the binary and its corresponding set…

Solar and Stellar Astrophysics · Physics 2018-11-20 Anya Samadi Gh. , Patricia Lampens , Davood M. Jassur
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