Calculadora de Raio de Anã Branca — Formula
## White Dwarf Mass-Radius Relation
White dwarfs are supported by electron degeneracy pressure. An unusual property: more massive white dwarfs are smaller.
### Approximate Relation
**R / R_sun ≈ 0.0126 × (M/M_sun)^(-1/3)**
A 0.6 M_sun white dwarf is roughly Earth-sized. As mass approaches the Chandrasekhar limit (1.4 M_sun), the radius shrinks toward zero.
White dwarfs are supported by electron degeneracy pressure. An unusual property: more massive white dwarfs are smaller.
### Approximate Relation
**R / R_sun ≈ 0.0126 × (M/M_sun)^(-1/3)**
A 0.6 M_sun white dwarf is roughly Earth-sized. As mass approaches the Chandrasekhar limit (1.4 M_sun), the radius shrinks toward zero.
Exemplo Resolvido
A 0.6 M_sun white dwarf.
- R/R_sun = 0.0126 × 0.6^(-1/3)
- 0.6^(-1/3) = 1/(0.6^(1/3)) = 1/0.8434 = 1.1856
- R/R_sun = 0.0126 × 1.1856 = 0.01494
- R = 0.01494 × 695700 = 10 394 km ≈ 1.63 R_Earth