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- Title
Upper Mass-Loss Limits and Clumping in the Intermediate and Outer Wind Regions of OB stars.
- Authors
Rubio-Díez, M. M.; Sundqvist, J. O.; Najarro, F.; Traficante, A.; Puls, J.; Calzoletti, L.; Figer, D.
- Abstract
Mass-loss is a key parameter throughout the evolution of massive stars. In this work we probe the radial clumping stratification of OB stars in the intermediate and outer wind regions (r ≳ 2 R *; r , radial distance to photosphere), derive upper limits for mass-loss rates, Ṁ max, and compare them to current theoretical mass-loss recipes implemented in evolutionary models. A key conclusion of our analysis regards the derived upper-limit mass-loss rates of B supergiants, independently of clumping, which calls for an urgent revision of the role recombination of iron-like elements plays in determining the mass-loss rates of objects that cross the bi-stability region, and a careful analysis of corresponding effects for stellar evolution models.
- Subjects
STELLAR atmospheres; STELLAR evolution; STELLAR mass; EVOLUTIONARY models
- Publication
Proceedings of the International Astronomical Union, 2024, Vol 18, Issue S361, p194
- ISSN
1743-9213
- Publication type
Article
- DOI
10.1017/S1743921322003271