V957 CEP—A Zero-Age Eclipsing System

New high-precision photometric measurements of the V957 Cep system ( , , , B6 V+B8 V), as well as an integrated approach to determining orbital parameters based both on photometric solutions of the light curves and the study of the course of residual deviations of the minima timings from the linear...

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Bibliographic Details
Published in:Astronomy reports 2024, Vol.68 (5), p.472-488
Main Authors: Volkov, I. M., Naroenkov, S. A., Kravtsova, A. S.
Format: Article
Language:English
Subjects:
Astronomy
Light curve
Observations and Techniques
Parameters
Photometry
Physical properties
Physics
Physics and Astronomy
Stars
Stellar age
Synchronism
Time synchronization
Variable stars
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Summary:New high-precision photometric measurements of the V957 Cep system ( , , , B6 V+B8 V), as well as an integrated approach to determining orbital parameters based both on photometric solutions of the light curves and the study of the course of residual deviations of the minima timings from the linear formula made it possible for the first time to accurately measure the apsidal motion rate: /year, which coincided with the theoretical value under the condition of the orbital and axial rotation synchronism: /year. The physical parameters of the component stars were obtained: K, , , K, M 2 = 3.0 ± , . This set of parameters corresponds to stars of zero age, recently descended to ZAMS. The secondary component is a pulsating variable star of the Cephei type.
ISSN:1063-7729
1562-6881
DOI:10.1134/S1063772924700446