NATS 102 Milkyway

NATS 102 Milkyway - the distribution of globular clusters...

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Galaxy- Stars, Gas, Dust, 100 billion stars. Held together by gravity. GIANTS!!! Planets, large enough, pull on a star as it makes its small orbit creating a doppler shift. That is how planets are discovered The velocity is negative when it is moving toward you, it is positive when it moves away from you. Blue shift - negative Red shift- positive Milky way 3 main components: bulge-center disk-thin disk around bulge halo- spherical distribution of stars surrounding the galaxy
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Unformatted text preview: the distribution of globular clusters in the sky showed us where we are in the galaxy. the most means the center Galaxy are like islands in the ocean which is the universe and our solar system is like a blade of grass on an island 100,000 LY width of disk, think of halo as ball like and imagine it bigger than it is Most distant things from the center of the galaxy is in the disk Globular clusters are how we know where we are in the galaxy...
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This note was uploaded on 04/02/2008 for the course NATS 102 taught by Professor Coyne during the Fall '08 term at Arizona.

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