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Companion(s) of the Eclipsing Binary KIC 3832716

Published online by Cambridge University Press:  29 August 2019

Š. Parimucha ,
M. Fedurco  and
P. Gajdoš
Š. Parimucha
Affiliation:
Institute of Physics, Faculty of Natural Sciences, Šafárik University, Jesenná 5, 040 01, Košice email: [email protected]
M. Fedurco
Affiliation:
Institute of Physics, Faculty of Natural Sciences, Šafárik University, Jesenná 5, 040 01, Košice email: [email protected]
P. Gajdoš
Affiliation:
Institute of Physics, Faculty of Natural Sciences, Šafárik University, Jesenná 5, 040 01, Košice email: [email protected]
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Abstract

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Detailed analyses of observations by the Kepler satellite may reveal unknown facts about objects that were previously regarded as eclipsing binaries. We present results of our analysis of such an object, KIC 3832716. We show that the system actually contains two eclipsing binaries (EB1 and EB2), with orbital periods of 1.14 and 2.17 days, orbiting around their common centre of mass with period of at least 1400 days and with an estimated mass ratio of 0.7 ± 0.3. Analyses of the (O–C) diagrams of both eclipsing pairs show three different types of variation: (i) long-term changes probably due to light-time effects, (ii) spikes caused by the superposition of the eclipses of both binaries, and (iii) semi-regular variations in EB1 with a period of 57 days, presumably caused by the presence of spots on its secondary component.

Keywords

Techniques: photometriceclipsesbinaries: eclipsingstars: spots
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S339: Southern Horizons in Time-Domain Astronomy , November 2017 , pp. 331 - 334
Copyright
© International Astronomical Union 2019 

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