Detailed Chromospheric Activity Nature of KIC 9641031

Author:

Yoldaş Ezgi,Dal Hasan Ali

Abstract

AbstractThis study depends on KIC 9641031 eclipsing binary with a chromospherically active component. There are three type variations, such as geometrical variations due to eclipses, sinusoidal variations due to the rotational modulations, and also flares, in the light curves. Taking into account results obtained from observations in the Kepler Mission Database, we discuss the details of chromospheric activity. The sinusoidal light variations due to rotational modulation and the flare events were modelled. 92 different data subsets separated using the analytic models were modelled separately to obtain the cool spot configuration. Acording to the model, there are two active regions separated by about 180° longitudinally between the latitudes of +50° and +100°. 240 flares, whose parameters were computed, were detected. Using these parameters, the OPEA model was derived, in which the Plateau value was found to be 1.232±0.069 s, and half-life parameter was found as 2291.7 s. The flare frequency N1 was found as 0.41632 h−1, while the flare frequency N2 was found as 0.00027. Considering these parameters together with the orbital period variations demonstrates that the period variations depend on chromospheric activity. Comparing the system with its analogue, the activity level of KIC 9641031 is remarkably lower than the others.

Publisher

Cambridge University Press (CUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Chromospheric activity behavior of an eclipsing binary system KOI 68AB;Astronomische Nachrichten;2019-07

2. High-level magnetic activity nature of the eclipsing binary KIC 12418816;Monthly Notices of the Royal Astronomical Society;2017-11-29

3. KIC 2557430: A Triple System Containing One γ Dor and Two Flaring Components?;Publications of the Astronomical Society of Australia;2017

4. KOI-256’s Magnetic Activity Under the Influence of the White Dwarf;Publications of the Astronomical Society of Australia;2017

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