Population of Stars (2)

• Radii:

  • WD ~ Earth-sized (1/100 of Sun)
  • Giants ~ 10-100 x size of sun (~Earth orbit in our scale model of the solar system)
  • Supergiants ~ 100-1000 x size of sun

• Mass:

  • ~0.1 Msun to 55-100 Msun

• Mass + Radius => Density (DEMO)

  • MS: density sun ~ 1g/cm3 ~ density water
  • Giants: 0.1 – 0.01 x density sun
  • Supergiants: 0.001 – 0.000001 x density sun
  • WD: ~ 3 000 000 x density sun (1 tsp ~ 15 tons on Earth)

Notes: