YELLOW DWARFS Color Appear yellow Gases Burned Fuse
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, 000 K • Area: Main sequence stars • Death/Next Stage: Fade to brown stars • Lifetime: Generally will last for 10 trillion
RED DWARF
RED GIANT • Color: Appears orange • Gases Burned: 1 st 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
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 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 10 -3 solar units (. 01) Brown Dwarf Below 10 -5 solar units (. 0001)
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