Yellow Dwarfs Color: Appear yellow Gases Burned: Fuse H, He to generate into light Size : Small  80-100% mass of the sun Surface Temperature: 5300-6000 K Area: Main sequence stars Death/Next Stage: Expand into a red giant Lifetime: Generally will last for 10 billion years

Our Sun is a Yellow Dwarf

Red Dwarf Color: Appears red Gases Burned: H used to the last drop Size : Small  7.5% - 100% size of the sun Surface Temperature: Cool, under 4,000K Area: Main sequence stars Death/Next Stage: Fade to brown stars Lifetime: Generally will last for 10 trillion years

Red Dwarf

Red Giant Color: Appears orange Gases Burned: 1st H, then after swell uses heavier elements Size : 100 times bigger then original Surface Temperature: Becomes cooler, under 6500 K Area: Evolve from main sequence stars Death/Next Stage: Collapse to white dwarf after fuel is gone Lifetime: Generally will last for hundreds of billions of years

Red Giant

Blue Giant Color: Appears blue Gases Burned: He Size : Huge Surface Temperature: Hot, 20,000 K Area: Post main sequence stars Death/Next Stage: Expand and cool to red giants or expand into supergiants Lifetime: Short, tens or hundreds of million years

Blue Giant

Supergiant Color: Red or Blue Gases Burned: Carbon Size : Largest known 10-70 Suns Surface Temperature: Red 3500-4500 K, Blue 20,000- 50,000 Area: Post Main Sequence Death/Next Stage: Supernova to a black hole Lifetime: Short, 30 million- few thousand years

Supergiant

White Dwarf Color: Appears white Gases Burned: He Size : Small, 60% of original mass into size of the Earth Surface Temperature: Hot, but will slowly cool down Area: Post Red Giant Death/Next Stage: Cold dark black dwarf Lifetime: Long, Age of the Universe

White Dwarf

Brown Dwarf Color: Can’t visibly see Gases Burned: No gases Size : small, .07 solar masses Surface Temperature: Cool Area: Unknown Death/Next Stage: Unknown Lifetime: Unknown

Brown Dwarf

Neutron Star Color: Appears white Gases Burned: Stellar remnant, neutrons, small amount of H Size : Small, 5-10 miles Surface Temperature: Extremely hot, 1 million degrees but surface cools Area: Post stars Death/Next Stage: Dissolves, slowly stops spinning Lifetime: 10 billion years

Neutron Stars

Star Type Luminosity Yellow Dwarf 1 solar unit (as bright as the sun) Red Dwarf 10-3 solar units (.01) Red/Blue Giants 102 solar units (100) Red/Blue Supergiants 105 solar units (10,000) Neutron Star 10-2 solar units (.1) White Dwarf Brown Dwarf Below 10-5 solar units (.0001)