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Recent advances in modeling stellar interiors [PDF]

open access: yesAstrophysics and Space Science, 2010
Advances in stellar interior modeling are being driven by new data from large-scale surveys and high-precision photometric and spectroscopic observations. Here we focus on single stars in normal evolutionary phases; we will not discuss the many advances in modeling star formation, interacting binaries, supernovae, or neutron stars. We review briefly: 1)
A. Baglin   +90 more
openaire   +3 more sources

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

Lithium in Turnoff Stars in the Globular Cluster M5: A Quest for Primordial Lithium

open access: yesThe Astrophysical Journal, 2023
The light element lithium is formed by nucleosynthesis during the Big Bang. Its abundance can help to define the parameters of the early Universe. To find this primordial value, it is necessary to determine Li abundances in the oldest stars because it is
Ann Merchant Boesgaard   +1 more
doaj   +1 more source

Mixing Uncertainties in Low-Metallicity AGB Stars: The Impact on Stellar Structure and Nucleosynthesis

open access: yesUniverse, 2021
The slow neutron-capture process (s-process) efficiency in low-mass AGB stars (1.5 < M/M⊙ < 3) critically depends on how mixing processes in stellar interiors are handled, which is still affected by considerable uncertainties.
Umberto Battino   +4 more
doaj   +1 more source

Semi-analytical Expression of G-mode Period Spacing: The Case of Brunt–Väisälä Frequency with Not a Jump but a Ramp

open access: yesThe Astrophysical Journal, 2023
To decipher complex patterns of gravity-mode period spacings observed for intermediate-mass main-sequence stars is an important step toward a better understanding of the structure and dynamics in the deep radiative region of the stars.
Yoshiki Hatta
doaj   +1 more source

The Structure and Evolution of Stars: Introductory Remarks

open access: yesGalaxies, 2023
In this introductory chapter of the Special Issue entitled ‘The Structure and Evolution of Stars’, we highlight the recent major progress made in our understanding of the physics that governs stellar interiors.
Dominic M. Bowman   +2 more
doaj   +1 more source

Asteroseismic Investigation on KIC 10526294 to Probe Convective Core Overshoot Mixing

open access: yesThe Astrophysical Journal, 2023
In the overshoot mixing model with an exponentially decreasing diffusion coefficient, the initial value of the diffusion coefficient plays a crucial role.
Qian-Sheng Zhang   +3 more
doaj   +1 more source

Sounding stellar interiors [PDF]

open access: yesSymposium - International Astronomical Union, 1997
Multimode pulsations have been discovered in a large variety of main sequence stars and white dwarfs. There are abundant and accurate data on p- and g- mode frequencies in these objects. So far, however, use of these data for sounding interiors has been very limited.
openaire   +1 more source

Magnetohydrodynamics of stellar interiors [PDF]

open access: yesAstronomy and Geophysics, 2005
David Hughes, Robert Rosner and Nigel Weiss describe what was achieved during a programme on stellar magnetic fields at the Isaac Newton Institute in Cambridge. Over a four-month period more than 90 participants visited the Institute for a mixture of structured workshops and informal collaboration.
David Hughes, Robert Rosner, Nigel Weiss
openaire   +1 more source

A Jacobian-free Newton-Krylov method for time-implicit multidimensional hydrodynamics [PDF]

open access: yes, 2015
This work is a continuation of our efforts to develop an efficient implicit solver for multidimensional hydrodynamics for the purpose of studying important physical processes in stellar interiors, such as turbulent convection and overshooting. We present
Baraffe, Isabelle   +7 more
core   +4 more sources

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