Work

Updated and Expanded OPAL Equation‐of‐State Tables: Implications for Helioseismology

Year: 2002

Type: article

Abstract: We are in the process of updating and extending the OPAL equation-of-state (EOS) and opacity data to include low-mass stars. The EOS part of that effort now is complete, and the results are described herein. The new data cover main-sequence stars having mass ≥0.1 M ☉ . As a result of the more extreme matter conditions encountered with low-mass stars, we have added new physics. The electrons are now treated as relativistic, and we have improved our treatment of molecules. We also consider the implications of the new results for helioseismology.

Source: The Astrophysical Journal

DOI: 10.1086/341894

Authors: F. J. Rogers, A. Nayfonov

Institutions: Lawrence Livermore National Laboratory, Teradyne (United States)

Language: English

Topic: Stellar, planetary, and galactic studies

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: National Science Foundation, U.S. Department of Energy, Lawrence Livermore National Laboratory

Awards: G1702950523, Theoretical Investigations of the Equation of State for Stellar Interiors, G3177268909, G6445123630