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Basic Stellar Physics [PDF]

open access: yesEPJ Web of Conferences, 2023
Polytropes, Virial theorem, evolutionary time scales, degrees of freedom, radiative transport, molecular weight, degeneracy, Jeans mass, and Eddington luminosity are basic ingredients to describe the physics of stars.
Palmerini S.
doaj   +3 more sources

Stellar Physics and General Relativity

open access: hybridAstronomische Nachrichten
ABSTRACTThe general theory of relativity is currently established as the most precise theory of gravity supported by observations, and its application is diverse ranging from astronomy to cosmology, while its application to astrophysics has been restricted only to compact stars due to the assumption that the Newtonian approximation is sufficient for ...
Shuichi Yokoyama
semanticscholar   +4 more sources

Blue supergiants as tests for stellar physics [PDF]

open access: yesAstronomy & Astrophysics, 2021
Context. Massive star evolution is still poorly understood, and observational tests are required to discriminate between different implementations of physical phenomena in stellar evolution codes. Aims. By confronting stellar evolution models with observed properties of blue supergiants, such as pulsations, the chemical composition, and position in the
Cyril Georgy   +2 more
openaire   +6 more sources

Microlensing and the Physics of Stellar Atmospheres

open access: green, 2000
8 pages including 6 figures. To appear in ``Microlensing 2000: A New Era of Microlensing Astrophysics,'' an ASP conference proceedings, eds. J.W.
Penny D. Sackett
openalex   +5 more sources

Clusters: Age Scales for Stellar Physics [PDF]

open access: greenEAS Publications Series, 2016
Ages are key to truly understand a large plethora of astrophysical phenomena. On the other hand, stellar clusters are open windows to understand stellar evolution, specifically, the change with time and mass of different stellar properties. As such, they are our laboratories where different theories can be tested, but without accurate ages, our ...
D. Barrado
openalex   +5 more sources

Stellar test of the physics of unification [PDF]

open access: greenPhysical Review D, 2012
We discuss the feasibility of using solar-type main-sequence stars as probes of fundamental physics and unification. We use a simple polytropic stellar structure model and study its sensitivity to variations of the gravitational, strong and electroweak coupling constants in the context of unification scenarios.
J. P. P. Vieira   +2 more
openalex   +4 more sources

Stellar physics with the ALHAMBRA photometric system [PDF]

open access: goldJournal of Physics: Conference Series, 2011
Peer ...
T. Aparicio Villegas   +21 more
openalex   +7 more sources

Perspectives on the physics of late-type stars from beyond low earth orbit, the moon and mars [PDF]

open access: yesnpj Microgravity
With the new discoveries enabled thanks to the recent space missions, stellar physics is going through a revolution. However, these discoveries opened the door to many new questions that require more observations.
Savita Mathur, Ângela R. G. Santos
doaj   +2 more sources

Application of Laboratory Atomic Physics to Some Significant Stellar Chemical Composition Questions

open access: greenAtoms, 2018
This brief review highlights some current issues in Galactic stellar nucleosynthesis, and some recent laboratory studies by the Wisconsin atomic physics group that have direct application to stellar spectroscopy to advance our understanding of the ...
Christopher Sneden   +2 more
doaj   +2 more sources

Stellar evolution and the Standard Solar Model [PDF]

open access: yesEPJ Web of Conferences, 2020
This contribution is meant as a very brief introduction to the principal concepts of stellar physics. First the main physical processes active in stellar structures will be shortly described, then the most important features during the stellar life-cycle
Degl’Innocenti Scilla
doaj   +1 more source

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