KIC 4247791: A SB4 system with two eclipsing binaries (2EBs)

Abstract

KIC 4247791 is an eclipsing binary observed by the Kepler satellite mission. We wish to determine the nature of its components and in particular the origin of a shallow dip in its Kepler light curve that previous investigations have been unable to explain in a unique way. We analyze newly obtained high-resolution spectra of the star using synthetic spectra based on atmosphere models, derive the radial velocities of the stellar components from cross-correlation with a synthetic template, and calculate the orbital solution. We use the JKTEBOP program to model the Kepler light curve of KIC 4247791. We find KIC 4247791 to be a SB4 star. The radial velocity variations of its four components can be explained by two separate eclipsing binaries. In contradiction to previous photometric findings, we show that the observed composite spectrum as well as the derived masses of all four of its components correspond to spectral type F. The observed small dip in the light curve is not caused by a transit-like phenomenon but by the eclipses of the second binary system. We find evidence that KIC 4247791 might belong to the very rare hierarchical SB4 systems with two eclipsing binaries.

6 pages, 8 figures, 2 tables

References in corpus (15)

• The UKIRT Infrared Deep Sky Survey (UKIDSS)
• Architecture and Dynamics of Kepler's Candidate Multiple Transiting Planet Systems
• Kepler Eclipsing Binary Stars. I. Catalog and Principal Characterization of 1879 Eclipsing Binaries in the First Data Release
• Kepler Eclipsing Binary Stars. II. 2165 Eclipsing Binaries in the Second Data Release
• Eclipsing binaries in open clusters. II. V453 Cyg in NGC 6871
• Homogeneous studies of transiting extrasolar planets. I. Light curve analyses
• Characteristics of Kepler Planetary Candidates Based on the First Data Set: The Majority are Found to be Neptune-Size and Smaller
• KOI-126: A Triply-Eclipsing Hierarchical Triple with Two Low-Mass Stars
• Eclipsing binaries in open clusters. III. V621 Per in chi Persei
• HD 181068: A Red Giant in a Triply-Eclipsing Compact Hierarchical Triple System
• Low-Mass Eclipsing Binaries in the Initial Kepler Data Release
• Spectral analysis of Kepler SPB and Beta Cep candidate stars
• KIC 4247791: A SB4 system with two eclipsing binaries (2EBs)
• BD-22 5866: A Low-mass Quadruple-lined Spectroscopic AND Eclipsing Binary
• The resonant B1II+B1II binary BI108

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• Dynamical masses, absolute radii and 3D orbits of the triply eclipsing star HD 181068 from Kepler photometry
• KIC 4247791: A SB4 system with two eclipsing binaries (2EBs)
• Discovery of a double eclipsing binary with periods near a 3:2 ratio
• Doubly eclipsing systems
• 1SWASP J093010.78+533859.5: A Possible Hierarchical Quintuple System
• The Triply Eclipsing Hierarchical Triple Star KIC002856960
• The doubly eclipsing quintuple low-mass star system 1SWASP J093010.78+533859.5
• Multiply eclipsing candidates from the TESS satellite
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• A Quintuple Star System Containing Two Eclipsing Binaries
• APOGEE/Kepler Overlap Yields Orbital Solutions for a Variety of Eclipsing Binaries
• EPIC 203868608: A low-mass quadruple star system in the Upper Scorpius OB association
• Ole Romer's method still on the stage. The study of two bound eclipsing binaries in quintuple system V994 Her
• KIC 7177553: a quadruple system of two close binaries
• The extraneous eclipses on binary light curves: KIC 5255552, KIC 10091110, and KIC 11495766