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We present evolutionary models for low mass stars from 0.075 to 1 $\msol$ for solar-type metallicities [M/H]= 0 and -0.5. The calculations include the most recent interior physics and the latest generation of non-grey atmosphere models. We…

天体物理学 · 物理学 2008-11-26 Isabelle Baraffe , Gilles Chabrier , France Allard , Peter Hauschildt

Modelling isolated rotating stars at any rotation rate is a challenge for the next generation of stellar models. These models will couple dynamical aspects of rotating stars, like angular momentum and chemicals transport, with classical…

太阳与恒星天体物理 · 物理学 2015-06-11 Michel Rieutord , Francisco Espinosa Lara

Radiation feedback from massive population III stars may have given rise to low mass star formation from primordial or nearly primordial material. If early universe low mass stars did form, some should remain locally as white dwarfs,…

太阳与恒星天体物理 · 物理学 2023-08-25 T. M. Lawlor , J. MacDonald

Intermediate mass stellar evolution tracks from the main sequence to the tip of the AGB for five initial masses (2 to 6Msun) and metallicity Z=0.0001 have been computed. The detailed 1D structure and evolution models include exponential…

天体物理学 · 物理学 2016-08-30 Falk Herwig

We used a one-zone chemical evolution model to address the question of how many masses and metallicities are required in grids of massive stellar models in order to ensure reliable galactic chemical evolution predictions. We used a set of…

We review some important observed properties of massive stars. Then we discuss how mass loss and rotation affect their evolution and help in giving better fits to observational constraints. Consequences for nucleosynthesis at different…

天体物理学 · 物理学 2009-11-13 Georges Meynet

Both rotation and interactions with binary companions can significantly affect massive star evolution, altering interior and surface abundances, mass loss rates and mechanisms, observed temperatures and luminosities, and their ultimate…

太阳与恒星天体物理 · 物理学 2020-07-01 Trevor Z. Dorn-Wallenstein , Emily M. Levesque

Helium-burning stars, in particular Cepheids, are especially difficult to model, as the choice of free parameters can greatly impact the shape of the blue loops - the part of the evolutionary track at which instability strip is crossed.…

太阳与恒星天体物理 · 物理学 2024-08-15 Oliwia Ziółkowska , Radosław Smolec , Anne Thoul , Eoin Farrell , Rajeev Singh Rathour , Vincent Hocdé

Mass loss due to line-driven winds is central to our understanding of the evolution of massive stars. We extend the evolution models introduced in Paper I, where the mass loss recipe is based on the simultaneous calculation of the wind…

太阳与恒星天体物理 · 物理学 2023-05-17 Alex Camilo Gormaz-Matamala , Jorge Cuadra , Georges Meynet , Michel Curé

The evolution and explosion of metal-free stars with masses 10--100 solar masses are followed, and their nucleosynthetic yields, light curves, and remnant masses determined. When the supernova yields are integrated over a Salpeter initial…

天体物理学 · 物理学 2011-02-11 Alexander Heger , S. E. Woosley

We explore neutrino emission from nonrotating, single star models across six initial metallicities and seventy initial masses from the zero-age main sequence to the final fate. Overall, across the mass spectrum, we find metal-poor stellar…

太阳与恒星天体物理 · 物理学 2024-07-04 Ebraheem Farag , F. X. Timmes , Morgan T. Chidester , Samalka Anandagoda , Dieter H. Hartmann

Fundamental parameters of a sample of 26 apparently slowly-rotating single early B-type stars in the solar neighbourhood are presented and compared to high-precision data from detached eclipsing binaries (DEBs). The data are used to discuss…

太阳与恒星天体物理 · 物理学 2014-12-04 Maria-Fernanda Nieva , Norbert Przybilla

While magnetic fields have long been considered to be important for the evolution of magnetic non-degenerate stars and compact stars, it has become clear in recent years that actually all of the stars are deeply affected. This is…

太阳与恒星天体物理 · 物理学 2021-02-03 Koh Takahashi , Norbert Langer

Young populations at Z<Zo are being examined to understand the role of metallicity in the first phases of stellar evolution. For the analysis it is necessary to assign mass and age to Pre--Main Sequence (PMS) stars. While it is well known…

天体物理学 · 物理学 2009-11-13 Di Criscienzo , P. Ventura , F. D'Antona

Evolutionary synthesis models are the prime method to construct models of stellar populations, and to derive physical parameters from observations. One of the assumptions for such models so far has been the time-independence of the stellar…

宇宙学与河外天体物理 · 物理学 2015-05-13 P. Anders , H. J. G. L. M Lamers , H. Baumgardt

Massive stars are key sources of radiative, kinetic, and chemical feedback in the universe. Grids of massive star models computed by different groups each using their own codes, input physics choices and numerical approximations, however,…

太阳与恒星天体物理 · 物理学 2015-06-23 Samuel Jones , Raphael Hirschi , Marco Pignatari , Alexander Heger , Cyril Georgy , Nobuya Nishimura , Chris Fryer , Falk Herwig

We present numerical simulations to describe the nucleosynthesis and evolution of pre-Galactic clouds in a model which is motivated by cold dark matter simulations of hierarchical galaxy formation. We adopt a SN-induced star-formation…

天体物理学 · 物理学 2007-05-23 L. Saleh , T. C. Beers , G. J. Mathews

Population III stars supplied the first light and metals in the Universe, setting the pace of re-ionisation and early chemical enrichment. In dense haloes their evolution can be strongly influenced by the energy released when WIMPs…

太阳与恒星天体物理 · 物理学 2026-01-21 Anais Pauchet , Devesh Nandal

We present extensive calculations of the structure and the evolution of low-massstars in the range 0.07-0.8 $\msol$, for metallicities $-2.0\le \mh \le 0.0$. These calculations are based on the most recent description of the microphysics…

天体物理学 · 物理学 2008-11-26 Gilles Chabrier , Isabelle Baraffe

Recent studies show that rotation significantly affects the s-process in massive stars. We provide tables of yields for non-rotating and rotating massive stars between 10 and 150 $M_{\odot}$ at $Z=10^{-3}$ ([Fe/H] $=-1.8$). Tables for…

太阳与恒星天体物理 · 物理学 2018-10-24 Arthur Choplin , Raphael Hirschi , Georges Meynet , Sylvia Ekstroöm , Cristina Chiappini , Alison Laird