Use Figure 20.3 to estimate the radius of a 0.9 M⊙ white dwarf star.FIGURE 20.3 The Mass-R...

Use Figure 20.3 to estimate the radius of a 0.9 M⊙ white dwarf star.

FIGURE 20.3 The Mass-Radius Relationship for White Dwarfs Radius is given in terms of the radius of the Earth, R⊕, and mass is in units of solar masses, M⊙. The more massive a white dwarf, the smaller it is. Notice that a white dwarf of 0.5 M⊙ is larger than the Earth, but a white dwarf of 1 M⊙ is about 90% as large as the Earth and a white dwarf of 1.3 M⊙ is only about 40% the size of the Earth. The size of a white dwarf falls to zero for a mass of 1.4 M⊙.