Results 1 to 10 of about 214,380 (335)

Chemical element transport in stellar evolution models. [PDF]

open access: yesR Soc Open Sci, 2017
Stellar evolution computations provide the foundation of several methods applied to study the evolutionary properties of stars and stellar populations, both Galactic and extragalactic.
Salaris M, Cassisi S.
europepmc   +2 more sources

Improving 1D Stellar Models with 3D Atmospheres [PDF]

open access: yesEPJ Web of Conferences, 2017
Stellar evolution codes play a major role in present-day astrophysics, yet they share common issues. In this work we seek to remedy some of those by the use of results from realistic and highly detailed 3D hydrodynamical simulations of stellar ...
Mosumgaard Jakob Rørsted   +4 more
doaj   +2 more sources

A new 12C+12C reaction rate: Impact on stellar evolution [PDF]

open access: yesEPJ Web of Conferences, 2023
Among the reactions driving stellar evolution during carbon burning, 12C + 12C fusion provides the key ingredients. This system reveals many resonances, but also regions with suppressed fusion cross-sections.
Monpribat E.   +13 more
doaj   +1 more source

A Search for Stellar Siblings of the ∼200 Myr TOI-251 b Planetary System

open access: yesThe Astrophysical Journal, 2023
Young planets (
Qinghui Sun   +6 more
doaj   +1 more source

Intriguing Revelations from Lithium, Beryllium, and Boron

open access: yesThe Astrophysical Journal, 2023
This is a report on some highlights of research on the rare light elements, lithium (Li), beryllium (Be), and boron (B), that were presented at my Henry Norris Russell Lecture in 2020 January.
Ann Merchant Boesgaard
doaj   +1 more source

Disentangling Stellar Age Estimates from Galactic Chemodynamical Evolution

open access: yesThe Astrophysical Journal, 2023
Stellar ages are key for determining the formation history of the Milky Way, but are difficult to measure precisely. Furthermore, methods that use chemical abundances to infer ages may entangle the intrinsic evolution of stars with the chemodynamical ...
Jeff Shen   +4 more
doaj   +1 more source

Fundamentals of stellar evolution and nucleosynthesis [PDF]

open access: yesEPJ Web of Conferences
The theory of stellar structure and evolution plays a pivotal role in modern astrophysics. Stellar evolution calculations are used to determine the ages and, to a lesser extent, distances of stars, which are critical to our knowledge of the history and ...
Vescovi Diego
doaj   +1 more source

A Review of the Mixing Length Theory of Convection in 1D Stellar Modeling

open access: yesGalaxies, 2023
We review the application of the one-dimensional Mixing Length Theory (MLT) model of convection in stellar interiors and low-mass stellar evolution.
Meridith Joyce, Jamie Tayar
doaj   +1 more source

Is there a mass discrepancy in the Cepheid binary OGLE-LMC-CEP0227? [PDF]

open access: yes, 2011
Context. The Cepheid mass discrepancy, the difference between masses predicted from stellar evolution and stellar pulsation calculations, is a challenge for the understanding of stellar astrophysics. Recent models of the eclipsing binary Cepheid OGLE-LMC-
Bono   +36 more
core   +1 more source

The Power of Asteroseismology for Early Stellar Evolution

open access: yesFrontiers in Astronomy and Space Sciences, 2019
Stars are the building blocks of planetary systems, clusters, associations, and galaxies. The evolution of stars is driven by physical processes in their interiors making theory of stellar interior structure and evolution an important ingredient of ...
Konstanze Zwintz
doaj   +1 more source

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