STARS

By: Sara Fukuhara& Melissa Onishi

STARS

• Huge, Shiny ball in space

• Produces light & other forms of energy

What are the made out of?

• Made of plasma (hot gas-like substance)

• White dwarfs & Neutron Stars: tightly packed atoms or subatomic particles

Characteristics

• Brightness (Luminosity)• Color• Surface Temperature• Size• Mass

Brightness

• How much energy it emits

• Based on Luminosity of the sun

• Ex: Alpha Centauri A is 1.3 times that of the sun

Color

• Depends on surface temp

• All stars emit a broad spectrum of colors

Mass

• Measure in solar mass

• Stars may have similar masses but different densities.

Life Cycle

• Protostars• Main Sequence

Stars• Red Giant• White Dwarf• Black Dwarf• Super Giants• Supernova• Neutron star

White Dwarf Stars

Summary• Stars: Produce light & other forms of

energy• Composition: plasma &

atoms/subatomic particles• Characteristics: Luminosity, Color,

Surface Temp., Size, & Mass• Life Cycle: Protostars, Main Sequence

Stars, Red Giant, White Dwarf, Black Dwarf, Super Giants, Supernova, Neutron

Works Cited• White, Raymond E. "Constellation." World Book Advanced. World

Book, 2011. Web. 7 Feb. 2011.• "Well Known Stars And Constellations." WWW2 Webserver. Web. 07

Feb. 2011. <http://www2.potsdam.edu/islamma/phys335constellations.htm>.

• "What Are Constellations?" UW Astronomy. Web. 07 Feb. 2011. <http://www.astro.wisc.edu/~dolan/constellations/extra/constellations.html>.

• "Stars, Stars Information, Facts, News, Photos -- National Geographic." Science and Space Facts, Science and Space, Human Body, Health, Earth, Human Disease - National Geographic. Web. 07 Feb. 2011. <http://science.nationalgeographic.com/science/space/universe/stars-article.html>.