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Circularization and Synchronization Times in Detached Main-Sequence Eclipsing Binaries

Published online by Cambridge University Press:  07 August 2017

A. Claret  and
A. Gimenez
A. Claret
Affiliation:
Instituto de Astrofísica de Andalucía Apartado 3004. 18080 Granada, Spain
A. Gimenez
Affiliation:
Laboratorio de Astrofísica Espacial y Física Fundamental (INTA) Estación de Villafranca, Apartado 50727. 28080 Madrid, Spain

Abstract

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We have studied a sample of selected eclipsing binaries with accurate absolute dimensions in order to check the validity of available theories of tidal evolution in terms of synchronization and circularization time scales. The use of integrated values, using theoretical evolutionary tracks to compute the change with time of radius, luminosity and internal structure, provides a powerful tool for the prediction of observable parameters. Pseudo-synchronization at periastron is the best approximation to stellar rotation in eccentric systems. While most systems are found to show synchronized velocities, the presence of eccentric orbits shows that circularization process are still active during the main sequence stage.

Type
Oral and Contributed Papers
Information
Symposium - International Astronomical Union , Volume 151: Evolutionary Processes in Interacting Binary Stars , 1992 , pp. 269 - 272
Copyright
Copyright © Kluwer 1992 

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