Accurate and versatile equations of state for the Sun and Sun-like stars

For models of the Sun and Sun-like stars, a high-quality equation of state is crucial. In addition, helioseismic and asteroseismic observations also put constraints on the physical formalisms. Thus, they effectively turn the Sun and the stars into laboratories for dense plasmas. Currently, the main...

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Bibliographic Details
Published in:Astrophysics and space science 2010-07, Vol.328 (1-2), p.139-146
Main Author: Daeppen, Werner
Format: Article
Language:English
Subjects:
Astrobiology
Astronomy
Astrophysics
Astrophysics and Astroparticles
Cosmology
Mathematical models
Observations and Techniques
Original Article
Physics
Physics and Astronomy
Solar physics
Space Exploration and Astronautics
Space Sciences (including Extraterrestrial Physics
Star & galaxy formation
Stars & galaxies
Sun
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Summary:For models of the Sun and Sun-like stars, a high-quality equation of state is crucial. In addition, helioseismic and asteroseismic observations also put constraints on the physical formalisms. Thus, they effectively turn the Sun and the stars into laboratories for dense plasmas. Currently, the main astrophysical beneficiary of a good equation of state is the determination of the chemical composition. Here, seismic data have supplemented spectroscopic information. Recently, there has been theoretical progress in the equation of state, thanks to renewed rigorous and phenomenological approaches.
ISSN:0004-640X
1572-946X
DOI:10.1007/s10509-010-0269-2