Wolf-Rayet stars as an evolved stage of stellar life
Cyril Georgy, Sylvia Ekstr\"om, Raphael Hirschi, Georges Meynet,, Jos\'e Groh, Patrick Eggenberger
TL;DR
This paper presents new stellar evolution models for Wolf-Rayet stars, compares them with observations, discusses model limitations, and considers the effects of binarity on WR star populations.
Contribution
It introduces updated Geneva stellar evolution models for massive stars and analyzes their implications for Wolf-Rayet star formation and characteristics.
Findings
Models align with some observed WR star properties
Identifies limitations in single-star models
Highlights the role of binarity in WR star evolution
Abstract
Wolf-Rayet (WR) stars, as they are advanced stages of the life of massive stars, provide a good test for various physical processes involved in the modelling of massive stars, such as rotation and mass loss. In this paper, we show the outputs of the latest grids of single massive stars computed with the Geneva stellar evolution code, and compare them with some observations. We present a short discussion on the shortcomings of single stars models and we also briefly discuss the impact of binarity on the WR populations.
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Taxonomy
TopicsStellar, planetary, and galactic studies · Astronomy and Astrophysical Research · Astro and Planetary Science