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Massive stars are the drivers of star formation and galactic dynamics due to their relatively short lives and explosive demises, thus impacting all of astrophysics. Since they are so impactful on their environments, through their winds on…

太阳与恒星天体物理 · 物理学 2019-12-16 Kyle C. Augustson

Intense mass loss through cool, low-velocity winds is a defining characteristic of low-to-intermediate mass stars during the asymptotic giant branch (AGB) evolutionary stage. Such winds return up ~80% of the initial stellar mass to the…

太阳与恒星天体物理 · 物理学 2023-07-21 Lynn D. Matthews

Massive stars have strong stellar winds that direct their evolution through the upper Hertzsprung-Russell diagram and determine the black hole mass function. Secondly, wind strength dictates the atmospheric structure that sets the ionising…

太阳与恒星天体物理 · 物理学 2022-06-14 Jorick S. Vink

One of the key phases of stellar evolution that remains poorly understood is stellar death. We lack a predictive model for how a star of a given mass explodes and what kind of remnant it leaves behind (i.e. the initial-final mass relation,…

太阳与恒星天体物理 · 物理学 2019-04-04 Jessica R. Lu , Casey Lam , Will Dawson , B. Scott Gaudi , Nathan Golovich , Michael Medford , Fatima Abdurrahman , Rachael L. Beaton

Over the past decade increasingly robust estimates of the dense molecular gas content in galaxy populations between redshift 0 and the peak of cosmic galaxy/star formation from redshift 1-3 have become available. This rapid progress has…

星系天体物理 · 物理学 2020-11-11 Linda J. Tacconi , Reinhard Genzel , Amiel Sternberg

All measurements of cosmic star formation must assume an initial distribution of stellar masses -- the stellar initial mass function -- in order to extrapolate from the star-formation rate measured for typically rare, massive stars (> 8…

星系天体物理 · 物理学 2018-07-04 Zhi-Yu Zhang , D. Romano , R. J. Ivison , P. P. Papadopoulos , F. Matteucci

The observation that old, massive galaxies have a larger fraction of low-mass stars than their younger, lower-mass counterparts adds to mounting evidence that star formation may have been different in the early Universe.

宇宙学与河外天体物理 · 物理学 2015-06-04 Nate Bastian

The study of the long-dead early generations of massive stars is crucial in order to obtain a complete picture of the chemical evolution of the Universe, hence the origin of the elements. The nature of these stars can be inferred indirectly…

太阳与恒星天体物理 · 物理学 2019-01-31 Arthur Choplin

Massive stars are "cosmic engines" (cf the title of the IAU Symposium 250). They drive the photometric and chemical evolution of galaxies, inject energy and momentum through stellar winds and supernova explosions, they modify in this way…

太阳与恒星天体物理 · 物理学 2015-06-11 Georges Meynet , Sylvia Ekstrom , Cyril Georgy , Cristina Chiappini , Andre Maeder

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…

天体物理学 · 物理学 2009-11-10 Mounib F. El Eid , Bradley S. Meyer , Lih-Sin The

Proper characterization of the host star to a planet is a key element to the understanding of its overall properties. The star has a direct impact through the modification of the structure and evolution of the planet atmosphere by being the…

地球与行星天体物理 · 物理学 2015-05-14 I. Ribas

The theory underlying the evolution and death of stars heavier than 10 Msun on the main sequence is reviewed with an emphasis upon stars much heavier than 30 Msun. These are stars that, in the absence of substantial mass loss, are expected…

太阳与恒星天体物理 · 物理学 2015-06-22 S. E. Woosley , Alexander Heger

The first stars in the Universe are predicted to have been much more massive than the Sun. Gravitational condensation accompanied by cooling of the primordial gas due to molecular hydrogen, yields a minimum fragmentation scale of a few…

天体物理学 · 物理学 2009-07-09 Volker Bromm , Abraham Loeb

Massive stars less massive than ~30 Msol evolve into a red supergiant after the main sequence. Given a standard IMF, this means about 80% of all single massive stars will experience this phase. RSGs are dominated by convection, with a…

太阳与恒星天体物理 · 物理学 2025-07-23 Sylvia Ekström , Cyril Georgy

We briefly summarize our present knowledge of the theory of low-mass stars and substellar objects and their contribution to the Galactic population.

天体物理学 · 物理学 2009-10-31 G. Chabrier , I. Baraffe , F. Allard , P. H. Hauschildt

In the era of advanced electromagnetic and gravitational wave detectors, it has become increasingly important to effectively combine and study the impact of stellar evolution on binaries and dynamical systems of stars. Systematic studies…

太阳与恒星天体物理 · 物理学 2020-08-12 Poojan Agrawal , Jarrod Hurley , Simon Stevenson , Dorottya Szécsi , Chris Flynn

The modelling of massive star evolution is a complex task, and is very sensitive to the way physical processes (such as convection, rotation, mass loss, etc.) are included in stellar evolution code. Moreover, the very high observed fraction…

太阳与恒星天体物理 · 物理学 2016-12-19 Cyril Georgy , Raphael Hirschi , Sylvia Ekström

Massive stars are the drivers of the chemical evolution of dwarf galaxies. We review here the basics of massive star evolution and the specificities of stellar evolution in low-Z environment. We discuss nucleosynthetic aspects and what…

太阳与恒星天体物理 · 物理学 2019-11-06 Sylvia Ekström , Georges Meynet , Cyril Georgy , José Groh , Arthur Choplin , Hanfeng Song

Massive stars are important metal factories in the Universe. They have short and energetic lives, and many of them inevitably explode as a supernova and become a neutron star or black hole. In turn, the formation, evolution and explosive…

太阳与恒星天体物理 · 物理学 2020-08-26 Dominic M. Bowman