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Massive stars lose a large fraction of their mass to radiation-driven winds throughout their entire life. These outflows impact both the life and death of these stars and their surroundings. Theoretical mass-loss rates of hot, massive stars…

Solar and Stellar Astrophysics · Physics 2022-03-17 R. Björklund , J. O. Sundqvist , S. M. Singh , J. Puls , F. Najarro

We review the current basic picture of the evolution of massive stars and how their evolution and structure changes as a function of initial mass. We give an overview of the fate of modern (Pop I) and primordial (Pop III) stars with…

Astrophysics · Physics 2009-11-07 A. Heger , S. E. Woosley , C. L. Fryer , N. Langer

We calculated a grid of evolutionary tracks of rotating models with masses between 1.0 and 3.0 $M_{\odot}$ and a resolution $\delta M \leq 0.02$ $M_{\odot}$, which can be used to study the effects of rotation on stellar evolutions and on…

Solar and Stellar Astrophysics · Physics 2015-06-12 Wuming Yang , Shaolan Bi , Xiangcun Meng

We conduct a systematic study on the effects of rapid rotation on predicted Be star observables. We use the three-dimensional Monte Carlo radiative transfer code, \textsc{hdust}, to model a comprehensive range of Be star subtypes at varying…

Core collapse of dense massive star clusters is unavoidable and this leads to the formation of massive objects, with a mass up to 1000 $\msun$ and even larger. When these objects become stars, stellar wind mass loss determines their…

Astrophysics · Physics 2011-02-11 H. Belkus , J. Van Bever , D. Vanbeveren

We investigate the evolution of the surface properties of models for rotating massive stars, i.e., their luminosities, effective temperatures, surface rotational velocities, and surface abundances of all isotopes, from the zero age main…

Astrophysics · Physics 2009-05-29 A. Heger , N. Langer

Massive stars played a key role in the early evolution of the Universe. They formed with the first halos and started the re-ionisation. It is therefore very important to understand their evolution. In this paper, we describe the strong…

[Abridged] We present a new grid of massive population III star models including the effects of rotation on the stellar structure and chemical mixing, and magnetic torques for the transport of angular momentum. Based on the grid, we also…

Solar and Stellar Astrophysics · Physics 2015-06-03 S. -C. Yoon , A. Dierks , N. Langer

Mass loss is a determinant factor which strongly affects the evolution and the fate of massive stars. At low metallicity, stars are supposed to rotate faster than at the solar one. This favors the existence of stars near the critical…

Astrophysics · Physics 2009-11-13 Cyril Georgy , Georges Meynet , André Maeder

The decrease, since z=1, of the rest-frame UV luminosity density is related to global changes in morphology, color and emission lines properties of galaxies. This is apparently followed by a similar decrease of the rest-frameIR luminosity…

Astrophysics · Physics 2007-05-23 F. Hammer

In this chapter I give an overall description of the structure and evolution of stars of different masses, and review the main ingredients included in state-of-the-art calculations aiming at reproducing observational features. I give…

Solar and Stellar Astrophysics · Physics 2017-12-27 Víctor Silva Aguirre

The evolution of massive stars is the basis of several astrophysical investigations, from predicting gravitational-wave event rates to studying star-formation and stellar populations in clusters. However, uncertainties in massive star…

Solar and Stellar Astrophysics · Physics 2022-04-13 Poojan Agrawal , Dorottya Szécsi , Simon Stevenson , Jan J. Eldridge , Jarrod Hurley

Massive stars play a major role not only in stellar evolution but also galactic evolution theory. This is because of their dynamical interaction with binary companions, and because their strong winds and explosive deaths as supernovae…

Solar and Stellar Astrophysics · Physics 2023-12-14 Dominic M. Bowman

Rotation can have severe consequences for the evolution of massive stars. It is now considered as one of the main parameters, alongside mass and metallicity that determine the final fate of single stars. In massive, fast rotating stars…

Solar and Stellar Astrophysics · Physics 2015-05-20 S. E. de Mink , M. Cantiello , N. Langer , O. R. Pols

Rotation is of key importance for the evolution of hot massive stars, however, the rotational velocities of these stars are difficult to determine. Based on our own data for 31 Galactic O stars and incorporating similar data for 86 OB…

Astrophysics of Galaxies · Physics 2015-06-17 N. Markova , J. Puls , S. Simón-Díaz , A. Herrero , H. Markov , N. Langer

Cloud environment is thought to play a critical role in determining the mechanism of formation of massive stars. In this contribution we review the physical characteristics of the environment around recently formed massive stars. Particular…

Astrophysics · Physics 2009-10-31 Guido Garay , Susana Lizano

Rotation deeply affects the evolution of very metal poor massive stars. Indeed, even moderately rotating stars reach the break--up limit during the Main--Sequence (MS) phase, they evolve rapidly to the red after the core H--burning phase…

Astrophysics · Physics 2007-05-23 Georges Meynet , André Maeder , Sylvia Ekström

(Abridged) Rotation has been shown to play a determinant role at very low metallicity, bringing heavy mass loss where almost none was expected. Is this still true when the metallicity strictly equals zero? The aim of our study is to get an…

Astrophysics · Physics 2009-11-13 S. Ekström , G. Meynet , C. Chiappini , R. Hirschi , A. Maeder

Although the theoretical study of very low metallicity (Z) and metal-free stars is not new, their importance has recently greatly increased since two related fields have been developing rapidly. The first is cosmological simulations of the…

Astrophysics · Physics 2009-11-11 R. Hirschi , A. Maeder , G. Meynet , C. Chiappini , S. Ekström

We present a detailed study of the evolution of massive stars of masses 15, 20, 25 and 30 $\msun$ assuming solar-like initial chemical composition. The stellar sequences were evolved through the advanced burning phases up to the end of core…

Astrophysics · Physics 2009-11-10 Mounib F. El Eid , Bradley S. Meyer , Lih-Sin The