| Name: Vinay kumar Gundeboina |
| Affiliation: osmania university |
| Conference ID: ASI2026_671 |
| Title: Understanding Subdwarf B Progenitors through Algol-Type Binary Evolution |
| Abstract Type: Poster |
| Abstract Category: Stars, Interstellar Medium, and Astrochemistry in Milky Way |
| Author(s) and Co-Author(s) with Affiliation: D Shanti Priya(Department of Astronomy, Osmania University, Hyderabad-500007, India), G Vinay Kumar(Department of Astronomy, Osmania University, Hyderabad-500007, India), J Rukmini(Department of Astronomy, Osmania University, Hyderabad-500007, India) |
| Abstract: Subdwarf B (sdB) stars are core helium-burning objects with extremely thin hydrogen envelopes, widely believed to form through binary interactions, yet the evolutionary pathways leading to their formation remain incompletely understood. In this work, we present our current understanding of Algol-type binaries as a potential evolutionary link between interacting binaries and sdB systems. Algol binaries are semi-detached systems undergoing stable Roche-lobe overflow, offering a natural environment for sustained mass transfer without entering a common-envelope phase. The role of mass transfer during the red giant branch in stripping the donor’s hydrogen envelope, while leaving a helium-core remnant capable of helium ignition, is examined. Using binary stellar evolution modelling with MESA, we outline how correlations between Algol system parameters and the observed properties of sdB binaries can be explored. This study aims to present a unified framework linking interacting binaries to hot subdwarf formation.
Key words: subdwarf B stars, Algol-type binaries, binary stellar evolution, stable mass transfer, MESA |
