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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…

太阳与恒星天体物理 · 物理学 2017-12-13 Hasan Ali Dal , Orkun Ozdarcan

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…

太阳与恒星天体物理 · 物理学 2016-05-04 Ezgi Yoldaş , Hasan Ali Dal

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 $M_{1}=1.16\pm0.12~M_{\odot}$,…

太阳与恒星天体物理 · 物理学 2023-06-21 Orkun Özdarcan , Hasan Ali Dal , Ezgi Yoldaş

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…

太阳与恒星天体物理 · 物理学 2016-11-08 Ezgi Yoldas , Hasan Ali Dal

Using high-precision photometry from the \textit{Kepler} mission, we investigate patterns of spot activity on the K1-type subgiant component of KIC 11560447, a short-period late-type eclipsing binary. We tested the validity of maximum…

太阳与恒星天体物理 · 物理学 2018-12-04 Emre Isik , Ibrahim Ozavci , Hakan V. Senavci , Gaitee A. J. Hussain , Douglas O'Neal , Mesut Yilmaz , Selim O. Selam

We present photometric spot modeling of the nearly four-year long light-curve of the Kepler target KIC 5955122 in terms of persisting dark circular surface features. With a Bayesian technique, we produced a plausible surface map that shows…

太阳与恒星天体物理 · 物理学 2014-10-01 A. Bonanno , H. -E. Fröhlich , C. Karoff , M. N. Lund , E. Corsaro , A. Frasca

We present a detailed analysis of surface inhomogeneities on the K1-type sub-giant component of the rapidly rotating eclipsing binary KIC 11560447, using high-precision Kepler light curves spanning nearly four years, corresponding to about…

太阳与恒星天体物理 · 物理学 2018-01-18 İbrahim Özavci , Hakan V. Şenavci , Emre Işik , Gaitee A. J. Hussain , Douglas O'Neal , Mesut Yilmaz , Selim O. Selam

The A/F-type stars and pulsators ($\delta$ Scuti-$\gamma$ Dor) are in a critical regime where they experience the transition from radiative to convective transport of energy in their envelopes. Such stars can pulsate in both gravity and…

太阳与恒星天体物理 · 物理学 2017-12-01 Anya , Samadi Gh. , Patricia Lampens , Davood M. Jassur

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…

太阳与恒星天体物理 · 物理学 2017-08-23 Orkun Özdarcan , Hasan Ali Dal

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…

太阳与恒星天体物理 · 物理学 2018-02-06 M. Kunt , H. A. Dal

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…

太阳与恒星天体物理 · 物理学 2017-02-08 Jae Woo Lee , Kyeongsoo Hong , Seung-Lee Kim , Jae-Rim Koo

Making use of the data obtained from Kepler satellite, we have analysed an F-type ultra-fast rotator KIC 6791060. We derive a rotational period of 0.34365$\pm$0.00004 d. Multiple periodicity with a period separation of $\sim$0.00016 d was…

太阳与恒星天体物理 · 物理学 2018-05-23 Subhajeet Karmakar , Jeewan C. Pandey

The light curves of solar-type stars present both periodic fluctuation and flare spikes. The gradual periodic fluctuation is interpreted as the rotational modulation of magnetic features on the stellar surface and is used to deduce magnetic…

太阳与恒星天体物理 · 物理学 2018-05-15 Han He , Huaning Wang , Mei Zhang , Ahmad Mehrabi , Yan Yan , Duo Yun

KIC 5359678 is a 6.231-d period F-type eclipsing binary system whose component stars both show starspot activity. It was observed by the Kepler satellite in long cadence for the full four-year duration of the mission. Wang et al (2021)…

太阳与恒星天体物理 · 物理学 2022-05-19 John Southworth

KIC 10661783 is an eclipsing binary that shows Delta Sct-like oscillations. More than 60 pulsation frequencies have been detected in its light curve as observed by the Kepler satellite. We want to determine the fundamental stellar and…

太阳与恒星天体物理 · 物理学 2013-08-20 H. Lehmann , J. Southworth , A. Tkachenko , K. Pavlovski

We present a combined photometric and spectroscopic analysis of four detached eclipsing binaries (KIC 8957954, KIC 10593759, KIC 8302455, and TIC 207398432), all of which exhibit composite G-type spectra and nearly equal mass ratios. Based…

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…

太阳与恒星天体物理 · 物理学 2018-11-20 Anya Samadi Gh. , Patricia Lampens , Davood M. Jassur

The LAMOST spectra and $\it{Kepler}$ light curves are combined to investigate the detached eclipsing binary KIC 8098300, which shows the O'Connell effect caused by spot/facula modulation. The radial velocity (RV) measurements are derived by…

太阳与恒星天体物理 · 物理学 2022-02-02 Hubiao Niu , Jianning Fu , Jiaxin Wang , Chunqian Li

The analysis of eclipsing binaries containing non-radial pulsators allows: i) to combine two different and independent sources of information on the internal structure and evolutionary status of the components, and ii) to study the effects…

太阳与恒星天体物理 · 物理学 2015-06-18 C. Maceroni , H. Lehmann , R. da Silva , J. Montalbán , C. -U. Lee , H. Ak , R. Deshpande , K. Yakut , J. Debosscher , Z. Guo , S. -L. Kim , J. W. Lee , J. Southworth

We present a spectroscopic/photometric analysis of the rapid rotator KIC8429280, discovered by ourselves as a very young star and observed by the Kepler mission. We use spectroscopic/photometric ground-based data to derive stellar…

太阳与恒星天体物理 · 物理学 2015-05-28 A. Frasca , H. -E. Fröhlich , A. Bonanno , G. Catanzaro , K. Biazzo , J. Molenda-Zakowicz
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