V839 Cep—A New Quadruple Doubly Eclipsing System

New high-precision photometric measurements of the eclipsing star V839 Cep ( , , , B6 V + B7 V), which is the A component of the visual double star J21035+5925AB, have established that component B is also an eclipsing variable ( , B9 V + G8 V). For component A, the apsidal rotation rate was measured...

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Bibliographic Details
Published in:Astronomy reports 2024, Vol.68 (9), p.886-905
Main Authors: Volkov, I. M., Volkova, A. S., Bagaev, L. A.
Format: Article
Language:English
Subjects:
Astronomy
Chemical composition
Chronology
Double stars
Observations and Techniques
Physical properties
Physics
Physics and Astronomy
Synchronism
Variable stars
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Summary:New high-precision photometric measurements of the eclipsing star V839 Cep ( , , , B6 V + B7 V), which is the A component of the visual double star J21035+5925AB, have established that component B is also an eclipsing variable ( , B9 V + G8 V). For component A, the apsidal rotation rate was measured to be /year, which exceeds the theoretical value under the condition of synchronism /year. The physical parameters of the component stars of the eclipsing pair A were obtained: K, , , K, , , and components of the eclipsing pair B: K, , , K, M 2 = , . The age of the system is determined to be 70 Myr with solar chemical composition. The components of star A are pulsating variable stars of the slow Cephei (SBC) type.
ISSN:1063-7729
1562-6881
DOI:10.1134/S1063772924700781