20–27 Mar 2026
Wild View Resorts
Africa/Gaborone timezone

The Dynamical Effect of Mass Transfer in Algol Systems

Not scheduled
20m
Wild View Resorts

Wild View Resorts

Plot 80 President Avenue, Kasane, Botswana
In-person - Poster Presentation 10 S&E poster Science & Engineering

Speaker

Seblu Humne Negu (Space Science and Geospatial Institute, Entoto Observatory and Research Center)

Description

Algol-type eclipsing binaries provide a unique laboratory for investigating the complex interactions that occur during star evolution, including mass transfer between components of near binary systems. In this study, we create and apply evolutionary computational models to simulate mass transfer processes in such systems, with an emphasis on conservative and non-conservative scenarios. By combining time-dependent stellar structure equations with Roche lobe overflow dynamics, we study how starting mass ratios, orbital periods, and angular momentum loss processes affect the long-term evolution of binary parameters. Our models are calibrated with observational data from well-studied Algol-type binaries, allowing us to follow evolutionary paths and anticipate system behaviors at various stages of mass exchange. The results show key thresholds where rapid mass transfer changes the orbital configuration, potentially leading to contact or merger phases. The simulations also provide information about mass transfer efficiency and its significance in shaping the observed diversity among Algol systems. These findings add to a more thorough understanding of close binary evolution and lay the groundwork for future observational and theoretical studies on mass exchange in interacting binaries.

Stream Science or Engineering

Primary author

Seblu Humne Negu (Space Science and Geospatial Institute, Entoto Observatory and Research Center)

Presentation materials

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