White dwarf stars as a research area encompasses the theoretical and observational study of compact stellar remnants supported by electron degeneracy pressure, focusing on their internal structure, composition (e.g., CO, ONe, or He cores), cooling sequences, and role in stellar and galactic evolution. Research investigates their mass–radius relations, crystallization and phase separation in dense plasmas, atmospheric properties and spectral classification (DA, DB, etc.), and magnetic and rotational characteristics. The field also examines white dwarfs as progenitors of Type Ia supernovae, as laboratories for extreme physics (equations of state, diffusion, convection), and as chronometers for estimating the ages of stellar populations and the Galactic disk.
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